Seatpost Adapter Shim

Purchased to adapt my old specialized rockhopper to a modern seatpost size. Fit perfectly, doesn't let the seatpost slip. An awesome cane creek product as usual!

For all the seat post sizes out there, shims can become very essential for riders that manage a number of cycles. Going to an e-bike, I used this to move a favorite seatpost / saddle to an e-bike of a larger frame size. This fit precisely, is well machined, light enough, and allowed me to use a much more comfortable seatpost.and saddle. Given that most posts synch at the top end of the seat tube, this provides good grip and has a well engineered lip to prevent it from slipping inside a normal undamaged tube.

I bought both the 27.2 to 31.4 and 27.2 to 31.6. I thought I needed the smaller one because my seat tube is a bit ovalized at the seatpost clamp area--but it was a bit too small to allow clamping with proper force. The 31.6 diameter worked perfectly. This is no reflection on the Cane Creek shim. For such a simple item, this is beautifully made: smooth on both sides; a pronounced lip on the top to it can't slip down into the seat post. A 3mm wide slit to allow compression around your seatpost, a 2.5mm wide groove opposite the slit to also allow some compression. It is quite long so it provides some grip for more than just the clamping area. I was using a carbon fiber seatpost so I used motorex non-abrasive carbon paste to prevent slipping. Didn't quite work with the 31.4; worked as expected with the proper 31.6 shim. Great solution.

Perfect fir for my suspension seat post! High quality and fit perfect!

everything fits so precisely, there is no gap, everything is one piece. my original seat post didn't fit as well)I recommend it.

It works great, it slipped at first but i think i may not have tightened it enough? You can't see it when installed and is pretty light weight.

The media could not be loaded. This shim allows the 27.2 mm Zoom suspension seat post to fit in the 31.8 mm seat post opening on my Lectric XPeak. Quick and easy install. It's light weight, fits perfectly in the bike and holds the suspension post securely.

Bought this for my sons bike so he could use his old seat. I can’t say how well it performs under full adult weight but haven’t had any issue while he’s riding

Pour ajustement de tige de selle très bien

Es un gran producto lo recomiendo ampliamente lo instalé y me funcionó perfectamente saludos

Works great, good quality, fits nice. Like that it’s longer compared to cheaper ones. Aventon pacer V2. Needed a new adapter to add aventon suspension seat post after losing the original one.

I wanted to use my 27.2 mm suspension seatpost in a 31.6 mm seat downtube and this shim was exactly what I needed. It was long enough (100 mm) that I didn’t have to worry about any wobble or excess play. The seatpost clamp easily tightened and closed the shim. I felt very secure sitting on my seat/seatpost/shim combination. I was originally going to buy a new suspension seatpost until a friend (John B) suggested using a shim; a HUGE cost savings!

usually such products are about being 'perfectly shaped' perfectly circular with good fits - and it does all of that keeping in with the brand quality and name - I notice no difference between seat post installed with this shim or one without - 5 stars