






🚴♂️ Upgrade your ride’s backbone with precision and style!
The PLATT Bicycle Seatpost Shim is a high-quality aluminum alloy adapter designed to convert a 31.6mm seatpost to fit a 33.9mm bike frame. At 100mm length, it provides enhanced support and stability compared to standard shims. Lightweight, durable, and corrosion-resistant, this shim eliminates the need to buy a new seatpost, making it a smart, cost-effective upgrade for cyclists seeking a perfect fit and reliable performance.


















































| ASIN | B0965G998X |
| Batteries included? | No |
| Best Sellers Rank | 6,807 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 2 in Cycling Seat Posts |
| Bike type | Mountain Bike |
| Color | Black/White |
| Customer Reviews | 4.2 4.2 out of 5 stars (1,681) |
| Date First Available | 29 May 2021 |
| Item model number | ZUK-057 |
| Material type | Aluminium |
| Package Dimensions | 16.1 x 8 x 3.4 cm; 60 g |
| Size | 31.6 I.D/33.9 O.D |
| UPC | 721703542375 |
A**A
absolutely perfect
Just what i wanted, did the job exactly as was required, was a perfect fit, slid in like it was made for it. worked perfectly. I used it on a bmx bike, which had a slightly larger diameter seat post tube than my seat post.
S**I
Well engineered accessory.
Well engineered, sorted out my seat slippage problem as it replaced a plastic sleeve which was totally useless. Important to check frame diameter with vernier calipers and likewise with the seat post to be sure to order the correct size, internal and external.
M**P
It works, to the... whatever is smaller than a millimeter! 😂
A very, very tight fit. That is probably the fault of the other product - a manual, suspension dropper post. However, with some lithium grease on the shim and post, this has marvelously facilitated installation. Thank you Amazon and Platt. 🥳
M**E
Good product
Excellent product
A**G
Does not fit - too thick walled!!
This ID30.9/OD31.6 GANOPPER branded seatpost shim does not function as intended, its wall thickness is too thick. I tried to use it for a FOX Transfer dropper post into a YETI SB120 frame, and the post with shim DID NOT fit at all. I ended up buying a Cane Creek shim from a reputable online bike shop and it fitted perfectly. So I DO NOT RECOMMEND THIS GANOPPER ITEM
R**R
Perfect fit
Perfect fit.
S**S
Worked perfectly
Worked perfectly, allowing me to use an old suspension seatpost in a Wisper bike.
I**.
Solve seatpost incompatibilites
Needed to install a suspension seatpost on my bicycle that did not come in a compatible size and this little tube solved my problem. Installed it myself in 1 minute. Such a simple and good idea!
T**O
Ottimo riduttore, purtroppo ho dovuto fare il reso perché non mi serviva più mala qualità era molto alta e le misure perfette
C**E
Ook goed
M**C
Tres bien
K**.
Piękna robota. Pasuje do ebika do amortyzowanej, regulowanej sztycy podsiodłowej.
C**E
Passt sowas von genau! Man muss schon seine Maße am Rad kennen, dann passen die Adapter hier auch perfekt. Ich würde immer die längere Version empfehlen da so mehr Kontakt zwischen dem Sattelrohr und der Sattelstütze besteht. Es sind schon ordentliche Hebelkräfte hier am Werk. 100 Millimeter sind prima geeignet. Durch diese Distanzhülse ist meine SunTour Sattelstütze mit 27,2mm sowohl auf dem BioBike wie nun auch am eBike mit 31,6mm nutzbar. 9,99€ statt 79€ einer weiteren Sattelstütze. Das ist nachhaltiger und ich kann sowieso immer nur mit einem Rad fahren. Der Umbau dauert kein 5 Minuten incl. genauester Höheneinstellung per Zollstock ;) Qualität: Bei 27,2 auf 31,6 liegen satte 4,4mm und somit ist die Hülse mit 2,2mm Windstärke extrem robust. Die Verarbeitung ist passgenau! und hochwertig. Preis - Leistung unschlagbar gut. Ich würde es jederzeit wieder kaufen und uneingeschränkt Freunden empfehlen. (Nein ich bekomme kein Geld für diese Rezession und habe die Hülse komplett selbst bezahlt.)
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