USE Seat Post Shim

Got the 34.9 to 31.6mm shim. It is a piece of rolled aluminum which is then machined to perfection. Mine fits both the seat tube and the seat post perfectly. Some of the reviews here, if calling this "a shim is a shim", are ignorant. Not well seen in the photo is that the outside taper is machined on a lathe. It is not bent sheet metal there. The only possible negative I can site is that the shim is painted rather than anodized. However, I can only tell this by the presence of some slight orange peel on the stem. If you just look at the tapered exterior bit mine looks anodized. At any rate the paint is very thin and may actually help provide some compliance with imperfect seat tubes.

I was getting some annoying creaking from my other seatpost shim. Guess it was the metal on metal interface. Even liberal use of grease would only quiet the noise for a week or two. I bought this and the delrin/metal interface is perfect. No more creaks! No slippage either with a carbon seatpost.

A shim is a shim, the black color is nice because it blends in with most seat posts and bike colors. Be careful, 25.0 is a strange diameter for a seatpost, 25.4 is more common. This will not work with a 25.4 seatpost

Made from decently durable plastic and would seem to have the components necessary for proper use had I purchased the right size. The price was higher than I expected for a non-metal product. Perhaps b/c of low volume production.

This is a shim. It isn't anything super special or cool. But it has a lip at the top to keep it from slipping down into the seat tube and it is nice and long so it goes down the tube far enough to support the post nicely. I used it because I already had a 30.9mm post and didn't want to buy another. This does the job.

I bought the 27.2-28.0 shim and used it for a 28.6-29.4 combo. Due to the thinness of this particular shim it could be re-purposed for most 0.8mm purposes - particularly those larger than 27.2.

A 30.9 mm Kind Shock LEV came up for sale locally for a great deal that I couldn't pass up. Bike frame seat tube takes a 31.6 seat post. Need I say more?No complaints. Works perfectly. The black goes well with my bikes color scheme. The lip helps prevent shim from sliding into seat tube.

This shim fit well. Tough to expect much more. It arrived a bit smushed because Amazon shipped it in an envelope and the inner carton is not sturdy enough to withstand crushing. It did not take much effort to get it back into the right shape.

It's a shim. Its the exact size and fits perfectly. I'm not sure what else needs to be said really!Oh! It's a tad longer than most, which is a good thing.

Ordered the 31.6 to 30.9 shim. As others have said it is definitely plastic. Not worth the 20 Euro plus price. Maybe if it was thin wall aluminum that was formed. I give it 3 stars because of the price for what I got doesn’t seem fair. However it does work, at least currently, and fit well. If they charged 10-12 euro for the formed plastic piece I would have given it 5 stars.

Die Hülse ist aus billigem Plastik (hat bereits den Transport nicht überlebt) und keinesfalls für den Einsatz am Mountainbike geeignet.

Etwas teuer. Die Passung ist perfekt. Die Klemmung wie Orginal. Sattelstütze hat absolut kein Spiel. Nur zu empfehlen wenn man die genauen Maße weiß.

Schnelle Lieferung, hat sofort gepasst, aber wie ich finde etwas zu teuer für so ein dünnes stück Plastik.Deswegen 4 Sterne