---
product_id: 1530650
title: "Heavy-Duty Indoor Stationary Exercise Bike w/49 LB Flywheel & 275LB Capacity, 4-Way Adjustable Seat & Multi-Grip Handlebar for Cardio Training & Cycling workout at Home"
brand: "sunny health & fitness"
price: "9910 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Sunny Health & Fitness"
url: https://www.desertcart.dk/products/1530650-heavy-duty-indoor-stationary-exercise-bike-w-49-lb-flywheel
store_origin: DK
region: Denmark
---

# Quiet belt drive system for distraction-free rides 4-way adjustable seat & 2-way handlebar for perfect fit 49 LB heavy flywheel for smooth momentum Heavy-Duty Indoor Stationary Exercise Bike w/49 LB Flywheel & 275LB Capacity, 4-Way Adjustable Seat & Multi-Grip Handlebar for Cardio Training & Cycling workout at Home

**Brand:** sunny health & fitness
**Price:** 9910 kr
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Ride strong, ride silent, ride your best — at home or beyond!

## Quick Answers

- **What is this?** Heavy-Duty Indoor Stationary Exercise Bike w/49 LB Flywheel & 275LB Capacity, 4-Way Adjustable Seat & Multi-Grip Handlebar for Cardio Training & Cycling workout at Home by sunny health & fitness
- **How much does it cost?** 9910 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/1530650-heavy-duty-indoor-stationary-exercise-bike-w-49-lb-flywheel)

## Best For

- sunny health & fitness enthusiasts

## Why This Product

- Trusted sunny health & fitness brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Heavy-duty steel frame supports up to 275 lbs, combining durability with stability for every rider.
- • **Tailored Comfort:** Fully adjustable seat and multi-grip handlebars adapt to your body for fatigue-free, extended training sessions.
- • **Powerful Momentum:** 49-pound flywheel delivers authentic, smooth cycling that mimics outdoor rides, keeping you in the zone.
- • **Effortless Mobility:** Integrated transport wheels and quick assembly get you spinning fast and storing easy—no sweat.
- • **Whisper-Quiet Workouts:** Belt drive system ensures near-silent operation so you can focus on crushing your goals without noise distractions.

## Overview

The Sunny Health & Fitness SF-B1002 Indoor Stationary Bike features a robust 49 lb flywheel and a quiet belt drive system for smooth, realistic cycling workouts. Designed with a heavy-duty steel frame supporting up to 275 lbs, it offers customizable comfort through a 4-way adjustable seat and multi-grip handlebars. Easy to assemble and move, this bike delivers professional-grade cardio training with durable reliability trusted by thousands.

## Description

desertcart.com : Sunny Health & Fitness Indoor Cycling Exercise Bike with Heavy-Duty 49 LB Chrome Flywheel, Stationary Bike with Customizable Comfort with 275 LBS. Max Weight - SF-B1002 : Exercise Bikes : Sports & Outdoors

Review: Fantastic bike, great service, happy customer - Delivered quickly and well packed. Exterior or package showed evidence of a drop on one corner, but only apparent damage was a significantly deformed packing strut (intended to be discarded). Instructions for assembly and adjustment were complete and useful. Insertion and adjustment of seat and handlebar columns required dead-blow hammer force, but as adjusted are completely stable -- no wobble or loosening, Based on other review comments, I replaced the supplied saddle with one I knew to be comfortable for me, along with the supplied pedals with clipless pedals. I also installed standard wired bike computers, using alternate spoke magnets and sensor attachment methods (double sided tape, longer zip ties and wood spacers). Time, cadence, speed, distance and other statistics are now available. As I have only had the unit a short time, with about 15 hours of use, long term durability is unknown. Operation has been excellent. Entire unit is rock solid, operation is virtually silent, and resistance device works well. REVIEW UPDATE - after four months use (approx. 100 hours/2500 odometer Kilometers). The five star rating remains unchanged. Details on bike computer installation: Most bike computers are based on a clock, micro-switch to sense magnet attached wheel & or pedal crank, and memory of a manually input wheel circumference) with statistics reported calculated from these three elements, As I wished to have continuous display of speed and and pedal rpm as well their session averages I chose to use two separate single sensor computers. Wheel circumference setting input to yield speed was the measured flywheel circumference, 1460 mm (57.5 inches) about the same as for a 409 bike tire size. Wheel circumference setting on input to yield pedal revolutions was 167 mm (correct conversion factor is actually 1667 mm, but because of specific input limits of computer used, the lower amount was used. Resulting "speed" mode display is 1/10 or actual crank revolutions per minute, with two displayed digits after the decimal point (for example, 100 RPM is displayed as speed of 10.00). The actual computers selected were Sunding model SD 558A because of display size and price (actually paid less than $5 for both, but currently available on internet for about $12 a piece). Their sensors are wired. Virtually any available bike computer could be substituted, but specific mounting and setting procedures might be required. The computers with their display screens mount on the center of the handlebar using the supplied mounts and zip ties. Because of the cycle frame configuration, sensor mounts required fabricated shims and longer 11 inch zip ties (the originally used tape eventually lost its grip). The shim for the RPM sensor is approximately 1/4 " X 4 1/2" x 2" with 2 drilled holes in one end to secure the sensor to the shim with supplied zip ties, and two 11" zip ties around the upper belt guard and shim secured it in place . 3 11" zip ties secured the sensor wire to the frame between the sensor and its display head. I replaced the supplied wheel magnet with a .75" round ceramic magnet attached with only its own force to the right pedal crank arm at the inside of the pedal. The shim for the speed sensor is approximately 1 3/8" X 5/8" X 4" 2 holes drilled in one of the 1 3/8" sides to secure 11" zip ties to the left front bike fork and 2 holes opposite them to secure the sensor with two supplied zip ties. An additional 2 11" zip ties secured the speed sensor wires to the bike frame between the sensor and its display head. I replaced the supplied wheel magnet with a .75" round ceramic magnet attached with only its own attraction to the flywheel, just below its rim. The resistance device works well, with proportionate increases in resistance with knob turns, no noise or vibration and no odor. I did spray the resistance pad with silicone lubricant before use and again after about two months use when a minor vibration had developed, I assume this will be a normal maintenance requirement, a two second burden I can live with. I contacted Sunny Sports and Fitness at their customer service web address to determine where cycle model specific parts could be obtained. A response arrived the same day that they could supply my needs (a resistance pad assembly and seat tube sleeve plastic sleeve). cost incl. postage was $12.50, which I consider a bargain. The water bottle holder presented two problems to me. In its original position, my right knee would occasionally bump the holder as I performed jumps (I am not yet as smooth at these as I should be). Relocating the holder to the front of the fork frame and reattaching with 2 11" zip ties solved this issue. The 28 oz. water bottle I use did not slide into the holder easily. Slight bending of the top of the holder front and rear wires improved the bottle fit.
Review: Great if you are willing to do the required setup and maintenance - This Sunny spin bike is very similar to the bikes we had at the gym when I first started spin classes there. 12 years ago. They upgraded to some more glitzy bikes, but I continued to just monitor my heart rate with a chest strap and cell phone app. Which is my go-to with the Sunny bike at home. If I want to participate in a group session on the bike, there are plenty available online and it is easy to find a way to attach your phone to the bike. Now I just put on the radio and watch my heart rate go up. And I can hear the radio better now since this bike is so quiet (I had been using a cyclops wind trainer before which was fine, a little noisy, and not the level of workout that this bike provides) Personally , I have no need for anything fancier than the heart rate monitor/fitness app, but there are a lot of reviewers that purchased add-ons that provide a 'Peloton-esque' experience. Even with the expense of the add-ons, you can't beat the price and quality of this bike. A lot of reviews and questions I read before purchasing this bike indicated that some folks are a little naive about what is required to use and maintain a good spin bike. When I attended spin classes at the local gym the bikes developed the kind of issues reviewers here are complaining about. So the bikes had to go to maintenance and were returned. They were used a LOT, so not surprise there. Same goes for this bike, if you purchase and use it a lot. However, if you set up and maintain it properly, including fixing it when it thumps or creaks, it will pay you back in a great spin. Sunny has videos and documents online to help you. My bike was a little thumpy at first. Usually a pedal problem. You can just tighten up the pedals more, but I recommend using a threadlocker on the threads when you screw the pedals in place. I used harborfreight semi-permanent threadlock. Another reviewer used loctite. I also changed out my pedals to use shimano pedals that allow me to use either clip or clipless. If you prefer clipless, you might go that route. Either way, tightening the pedals with threadlock eliminated the thump immediately. I have not had to tighten the crank, but I see this as something that may be necessary down the line. There are videos on doing that with bikes in general online. The other item you really need to check when you first set up your bike is the leather brake pad. It will likely need to be lubricated. Some folks complained that the bike smelled like something burning. My guess is that they never lubricated the brake pad. If you bike is new, this is as simple as putting a few drops of 3 in 1 oil on the flywheel where the brake rests with light resistance, rotating the wheel and letting the oil soak in. The pad will get considerably darker in color. If you have been riding it a while, you might need to pull the pad gizmo off and rough it up a bit for the oil to absorb. That requires removing one screw. Not rocket science. One of the beauties of this spin bike is that its design is relatively simple - not all those bells and whistles that potentially go bad. That also makes the great price point of this sturdy piece of equipment, especially the heavy flywheel that you wouldn't find in an inexpensive bike and that makes this an amazing spin bike.

## Features

- 【Heavy-Duty 49 LB Flywheel】This exercise bike is equipped with a 49 lbs heavy-duty flywheel that delivers a natural, smooth, and consistent cycling workout
- 【Authentic Experience】Micro-adjustable leather resistance that simulates real road biking, giving you an immersive and authentic riding experience at home
- 【Ergonomic Design】High-quality non-slip handlebar and micro-adjustable leather resistance deliver a comfortable and authentic workout experience at home, reducing fatigue during extended sessions
- 【Quiet Operation】Features a belt drive system for a quieter and smoother workout, allowing you to focus on your exercise without any distracting noise
- 【Customizable Comfort】Offers a 4-way adjustable seat and a 2-way adjustable handlebar to tailor the workout to your specific needs and preferences
- 【Superior Capacity】With a strong and durable heavy-duty frame, this stationary bike can accommodate a maximum user weight of up to 275 lbs
- 【Secure Ride】Comes with caged pedals for enhanced security and safety stop feature to quickly halt the spinning motion
- 【Easy Assembly】The average installation time is just 30 minutes, getting you up and running quickly and effortlessly
- 【Portable and Convenient】High-quality transportation wheels make it easy to move and store when not in use. Comes with a water bottle holder for easy hydration access during workouts
- 【Proven Quality】This exercise bike is a product of Sunny Health & Fitness, a trusted brand with over 20 years of experience in the fitness equipment industry. You can trust in the durability, reliability, and efficiency of this stationary bike

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00467H5YW |
| Best Sellers Rank | #57,636 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #103 in Exercise Bikes |
| Brand | Sunny Health & Fitness |
| Brand Name | Sunny Health & Fitness |
| Color | Black |
| Customer Reviews | 4.4 out of 5 stars 6,501 Reviews |
| Drive System | Belt |
| Global Trade Identification Number | 00815749010018 |
| Included Components | Exercise Bike, User Manual, Hardware, Tool |
| Item Dimensions D x W x H | 19"D x 54"W x 45"H |
| Item Height | 44.49 inches |
| Item Type Name | Stationary Cycle Bikes |
| Item Weight | 110.8 Pounds |
| Manufacturer | Sunny Distributor Inc. |
| Material | Alloy Steel |
| Maximum Weight Recommendation | 275 Pounds |
| Model Name | SF-B1002 |
| Model Number | SF-B1002 |
| Power Source | Battery Powered |
| Recommended Uses For Product | Indoor |
| Resistance Mechanism | Friction |
| Special Feature | Belt drive mechanism for smooth and quiet workouts, Fully adjustable seat and handlebar, Heavy duty steel frame, Transportation wheels for easy portability Special Feature Belt drive mechanism for smooth and quiet workouts, Fully adjustable seat and handlebar, Heavy duty steel frame, Transportation wheels for easy portability See more |
| Special Features | Belt drive mechanism for smooth and quiet workouts, Fully adjustable seat and handlebar, Heavy duty steel frame, Transportation wheels for easy portability |
| UPC | 815749010018 |
| Unit Count | 1.0 Count |
| Warranty Description | Frame: 1 Year, Parts: 3 Months |

## Product Details

- **Brand:** Sunny Health & Fitness
- **Color:** Black
- **Item Weight:** 110.8 Pounds
- **Material:** Alloy Steel
- **Maximum Weight Recommendation:** 275 Pounds
- **Power Source:** Battery Powered
- **Product Dimensions:** 19"D x 54"W x 45"H
- **Recommended Uses For Product:** Indoor
- **Resistance Mechanism:** Friction

## Images

![Heavy-Duty Indoor Stationary Exercise Bike w/49 LB Flywheel & 275LB Capacity, 4-Way Adjustable Seat & Multi-Grip Handlebar for Cardio Training & Cycling workout at Home - Image 1](https://m.media-amazon.com/images/I/71BiDJw4yjL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Do you think the indoor cycle trainer better than sf-b 901 pro indoor bike and why?**
A: Hello, thank you for your question. The Sunny Health & Fitness Indoor Cycling Exercise Bike SF-B1002 is equipped with a 49 lb flywheel vs the 40 lb flywheel of the SF-B901. With a heavier flywheel, you’ll feel more resistance in your ride to produce a more challenging workout. With the SF-B1002, you achieve a heart pumping, calories burning workout each and every time you ride. 

- Sunny Health & Fitness Customer Support

**Q: anyone have a seat cover they bought from amazon that fits this bike? I just want a cushion gel cover not to replace the seat**
A: Thank you for your question. You can absolutely use seat covers on the Indoor Cycling Exercise Bike SF-B1002. The seat dimensions are 10L X 7W X 2.5H inches so as long as the cover can fit those measurements, you will be good to go! If you have any further questions, please feel free to contact Customer Support via email at support@sunnyheathfitness.com.

Sunny Health & Fitness Customer Support

**Q: Hi, i am 5'-2", i just want to know if it is adjustable to the extent that i can ride it confortably? I have to make a deicion to buy it quickly. Than**
A: When it comes to bikes, your overall height is not as important as your inseam. Please feel free to copy and paste the link below on how to find your inseam. If your inseam fits within the inseam adjustment of 31 inches to 42 inches, the Indoor Cycling Exercise Bike SF-B1002 should fit just fine.  If you have any further questions, please feel free to contact Customer Support via email at support@sunnyheathfitness.com.

https://sunnyhealthfitness.com/blogs/products/how-to-measure-inseam-for-indoor-bikes-and-rowers

Sunny Health & Fitness Customer Support

**Q: Anyone that has owned this bike for over a year, do you still love it?**
A: I've used it regularly for over two years. I ride hard and it is heavy duty and tough. Keep the leather pad oiled.
The pedals are the weak link. I replaced mine with Shimano clip ins. We'll worth the upgrade. Btw, i think the pedals are all crappy on these Chinese bikes.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fantastic bike, great service, happy customer
*by O***T on June 16, 2015*

Delivered quickly and well packed. Exterior or package showed evidence of a drop on one corner, but only apparent damage was a significantly deformed packing strut (intended to be discarded). Instructions for assembly and adjustment were complete and useful. Insertion and adjustment of seat and handlebar columns required dead-blow hammer force, but as adjusted are completely stable -- no wobble or loosening, Based on other review comments, I replaced the supplied saddle with one I knew to be comfortable for me, along with the supplied pedals with clipless pedals. I also installed standard wired bike computers, using alternate spoke magnets and sensor attachment methods (double sided tape, longer zip ties and wood spacers). Time, cadence, speed, distance and other statistics are now available. As I have only had the unit a short time, with about 15 hours of use, long term durability is unknown. Operation has been excellent. Entire unit is rock solid, operation is virtually silent, and resistance device works well. REVIEW UPDATE - after four months use (approx. 100 hours/2500 odometer Kilometers). The five star rating remains unchanged. Details on bike computer installation: Most bike computers are based on a clock, micro-switch to sense magnet attached wheel & or pedal crank, and memory of a manually input wheel circumference) with statistics reported calculated from these three elements, As I wished to have continuous display of speed and and pedal rpm as well their session averages I chose to use two separate single sensor computers. Wheel circumference setting input to yield speed was the measured flywheel circumference, 1460 mm (57.5 inches) about the same as for a 409 bike tire size. Wheel circumference setting on input to yield pedal revolutions was 167 mm (correct conversion factor is actually 1667 mm, but because of specific input limits of computer used, the lower amount was used. Resulting "speed" mode display is 1/10 or actual crank revolutions per minute, with two displayed digits after the decimal point (for example, 100 RPM is displayed as speed of 10.00). The actual computers selected were Sunding model SD 558A because of display size and price (actually paid less than $5 for both, but currently available on internet for about $12 a piece). Their sensors are wired. Virtually any available bike computer could be substituted, but specific mounting and setting procedures might be required. The computers with their display screens mount on the center of the handlebar using the supplied mounts and zip ties. Because of the cycle frame configuration, sensor mounts required fabricated shims and longer 11 inch zip ties (the originally used tape eventually lost its grip). The shim for the RPM sensor is approximately 1/4 " X 4 1/2" x 2" with 2 drilled holes in one end to secure the sensor to the shim with supplied zip ties, and two 11" zip ties around the upper belt guard and shim secured it in place . 3 11" zip ties secured the sensor wire to the frame between the sensor and its display head. I replaced the supplied wheel magnet with a .75" round ceramic magnet attached with only its own force to the right pedal crank arm at the inside of the pedal. The shim for the speed sensor is approximately 1 3/8" X 5/8" X 4" 2 holes drilled in one of the 1 3/8" sides to secure 11" zip ties to the left front bike fork and 2 holes opposite them to secure the sensor with two supplied zip ties. An additional 2 11" zip ties secured the speed sensor wires to the bike frame between the sensor and its display head. I replaced the supplied wheel magnet with a .75" round ceramic magnet attached with only its own attraction to the flywheel, just below its rim. The resistance device works well, with proportionate increases in resistance with knob turns, no noise or vibration and no odor. I did spray the resistance pad with silicone lubricant before use and again after about two months use when a minor vibration had developed, I assume this will be a normal maintenance requirement, a two second burden I can live with. I contacted Sunny Sports and Fitness at their customer service web address to determine where cycle model specific parts could be obtained. A response arrived the same day that they could supply my needs (a resistance pad assembly and seat tube sleeve plastic sleeve). cost incl. postage was $12.50, which I consider a bargain. The water bottle holder presented two problems to me. In its original position, my right knee would occasionally bump the holder as I performed jumps (I am not yet as smooth at these as I should be). Relocating the holder to the front of the fork frame and reattaching with 2 11" zip ties solved this issue. The 28 oz. water bottle I use did not slide into the holder easily. Slight bending of the top of the holder front and rear wires improved the bottle fit.

### ⭐⭐⭐⭐⭐ Great if you are willing to do the required setup and maintenance
*by W***R on September 12, 2023*

This Sunny spin bike is very similar to the bikes we had at the gym when I first started spin classes there. 12 years ago. They upgraded to some more glitzy bikes, but I continued to just monitor my heart rate with a chest strap and cell phone app. Which is my go-to with the Sunny bike at home. If I want to participate in a group session on the bike, there are plenty available online and it is easy to find a way to attach your phone to the bike. Now I just put on the radio and watch my heart rate go up. And I can hear the radio better now since this bike is so quiet (I had been using a cyclops wind trainer before which was fine, a little noisy, and not the level of workout that this bike provides) Personally , I have no need for anything fancier than the heart rate monitor/fitness app, but there are a lot of reviewers that purchased add-ons that provide a 'Peloton-esque' experience. Even with the expense of the add-ons, you can't beat the price and quality of this bike. A lot of reviews and questions I read before purchasing this bike indicated that some folks are a little naive about what is required to use and maintain a good spin bike. When I attended spin classes at the local gym the bikes developed the kind of issues reviewers here are complaining about. So the bikes had to go to maintenance and were returned. They were used a LOT, so not surprise there. Same goes for this bike, if you purchase and use it a lot. However, if you set up and maintain it properly, including fixing it when it thumps or creaks, it will pay you back in a great spin. Sunny has videos and documents online to help you. My bike was a little thumpy at first. Usually a pedal problem. You can just tighten up the pedals more, but I recommend using a threadlocker on the threads when you screw the pedals in place. I used harborfreight semi-permanent threadlock. Another reviewer used loctite. I also changed out my pedals to use shimano pedals that allow me to use either clip or clipless. If you prefer clipless, you might go that route. Either way, tightening the pedals with threadlock eliminated the thump immediately. I have not had to tighten the crank, but I see this as something that may be necessary down the line. There are videos on doing that with bikes in general online. The other item you really need to check when you first set up your bike is the leather brake pad. It will likely need to be lubricated. Some folks complained that the bike smelled like something burning. My guess is that they never lubricated the brake pad. If you bike is new, this is as simple as putting a few drops of 3 in 1 oil on the flywheel where the brake rests with light resistance, rotating the wheel and letting the oil soak in. The pad will get considerably darker in color. If you have been riding it a while, you might need to pull the pad gizmo off and rough it up a bit for the oil to absorb. That requires removing one screw. Not rocket science. One of the beauties of this spin bike is that its design is relatively simple - not all those bells and whistles that potentially go bad. That also makes the great price point of this sturdy piece of equipment, especially the heavy flywheel that you wouldn't find in an inexpensive bike and that makes this an amazing spin bike.

### ⭐⭐⭐⭐ Overall a great piece of exercise equipment but had to solve the annoying grinding problem
*by L***N on November 28, 2023*

First I want to thank "Thorin Thunderfoot", a reviewer of this product from 11/08/2014 as his review allowed me to solve an annoying grinding noise problem that began only after 3 days since acquiring the unit, and only 45 minutes of riding (see bottom of post for details on the grinding noise fix) Though, let me say, this is a very nice and well built exercise bike. It comes packaged very well organized, the instructions and manual are very clear, and it was fairly easily assembled. Though it is quite heavy, initial moving and positioning required two people. It took me about an hour to fully assemble but the work was not hard. I do appreciate how well it was packaged and organized, with very clear assembly instructions. Here I will note that the seat that comes with it is hard as a rock, after purchasing an aftermark gel bike seat cover, this elevated the riding experience significantly. I did purchase this on a Black Friday deal for 60% off and I would say this was an extremely good purchase if you are interested in exercise and health. I feel like I got my money's worth. The bike rides very quitely when it is operating normally, I ride this bike at 5 am and it does not wake any of my room mates. The only sound it has is the sound of the felt resistance pad rubbing up against the fly wheel, and when properly lubricated the sound is incredibly smooth and quiet. I really like the adjustment knobs and how easy it is to customize your ride, both in terms of resistance of the fly wheel, and for the seat and handlebar dimensions. GRINDING: Now I will address this grinding issue that occured to me today. The problem boiled down to the chassis front and backplate that covers the drive belt and back drive wheel. Essentially the backplate had warped and was a little bit bent, the way it was tightened meant that it began to rub up against the back drive wheel and created friction and resistance, and this led to the annoying grinding noise observed when doing a full revolution of the wheel, and it was noticably audible and undesired. The previous review mentioned, in his case, the plastic backplate was rubbing up against the drive belt itself, while that wasn't my particular problem, my backplate was warped in such a way that it was rubbing up against the actual back wheel itself, creating the grinding noise. So, in his review, after removing the front plate covering the drive wheel, his workaround solution was to slip a small piece of carboard between the front and backplates to provide more separation from the drive belt. However, in my case, I found the solution was to remove a metal washer that was part of an upper screw connecting the backplate to the main frame of the bike, this gave the necessary distance between the backplate and the rear drive wheel so they wouldn't rub together and solved the grinding noise problem coming from inside the front/backplate chassis. Note that I also did not screw back in three bottom screws on the back of the backplate, closest to the rear wheel, I found that tightenting those screws also caused the backplate to press up against the rear wheel because of how tightly it is enveloped. Leaving those three screws out (and screwing in the rest) helped this problem and the drive belt chassis was still secured in place. The main criticism for this part is how tightly enveloped the plastic drivebelt chassis is, and how when tightened and with plastic warping, has the potential to rub up against these moving internal componenets. For me, it was removing that metal washer (and keeping the rubber washer in place) that solved it in combination with leaving those 3 backplate screws out, but the issue may occur along any point of the chassis and drive/belt or rear wheel. It just depends on how it's warped. It would be nice if they redesigned their chassis to make it a little bigger in a way that mitigates this potential problem. Other than that, it is a very solid bike, overall well built, easy to assemble with clear directions. Though it is extremely heavy (over 100 lbs) so it is difficult to move. I plan to get a lot of frustration free exercise out of this bike as long as the grinding doesn't happen again (or any other noise problem, like banging, as other reviewers noted), and as long as the parts are maintained and lubricated with regular use. Getting this bike for 60% off the MSRP seemed like a total score and I am happy with the product despite the minor issues that are possible in regards to the noise.

## Frequently Bought Together

- Sunny Health & Fitness Indoor Stationary Exercise Bike, 4-Way Adjustable Seat for Cycling Cardio workout at Home, Optional 49 LB Flywheel, Heavy-Duty & Free SunnyFit App Bluetooth Connect
- Sunny Health & Fitness Non-Slip Home Gym Mat – Workout Floor Protection Foam Pad for Treadmill, Bike, Elliptical, Yoga and Exercise Equipment or Standing Desk in 4 Size Options
- Sunny Health & Fitness Mobile Phone and Tablet Clamp Mount Holder for Bikes, Ellipticals, Treadmills and Other Handlebar Fitness Equipment

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-25*