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๐ดโโ๏ธ Upgrade your ride with precision โ donโt let a loose seatpost slow you down!
The CYSKY Bike SeatPost Adapter Shim is a high-quality aluminum alloy reducing sleeve designed to fit seat tubes ranging from 25.4mm to 34.9mm in diameter. With a compact 60mm length, it provides a durable, rust-resistant solution for securely adapting your mountain, road, BMX, or MTB bike seatpost for a perfect, stable fit.

























































| Asin | B07JYXC641 |
| Best Sellers Rank | #107,036 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #79 in Bike Seat Posts |
| Bike Type | Mountain Bike |
| Brand Name | CYSKY |
| Color | 27.2-33.9mm |
| Customer Reviews | 4.6 4.6 out of 5 stars (480) 4.6 out of 5 stars |
| Item Diameter | 27.2 millimeters |
| Item Dimensions W X H | 1.07"W x 2.36"H |
| Manufacturer | CYSKY |
| Manufacturer Part Number | CYSKY Seatpost 33.9 |
| Material Type | Aluminum |
| Model Number | CYSKY Seatpost 33.9 |
| Number Of Items | 1 |
| Unit Count | 1 Count |
| Upc | 734779642542 |
User
Works as expected
Worked perfectly to adapt a smaller seat post
User
Works as intended
Works as intended.
User
did the job
Works as advertised. Allowed me to use an older seat on a new bike for my son.
User
Worked perfectly
Worked perfectly to allow me to transition my daughter's racing class BMX seat to a longer post with an adjustable seat. Now she has the perfect height and couldn't be happier.It's made very well I don't see it breaking any time soon and it was well worth the few bucks I spent.
User
Excellent
Works like it should.
User
Gran suplemento.
Calza perfecto en el marco y ajusta en la caรฑa.
User
Works , but too expensive
It works fine but it is almost double the price on eBay... I guess because of the 2 day delivery 1
User
Works exactly as intended
Installed easily in seconds just as one would expect and is working fine on my grandson's bike. I was a little unsure if my measurements were accurate, even using a digital micrometer, but apparently they were. I have to wonder if the negative commenters were measuring accurately and/or if their seat post or frame mounting hole were slightly off from industry standards. Either way, they don't mention if a competitor's product worked better for them, so one has to wonder if this product was the wrong solution for their fitment issues.
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