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Humpert Seat Post Shim - 25.4mm ID

Customer Reviews (1)
5 / 5| Write your review
£3.99 Please note this product has selling restrictions to your country. was
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Product Reviews (1)
Questions & Answers (1) Q & A
- Material: AL6061-T6
- Colour: Silver
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Product Reviews (1)
Overall Product Rating 5 / 5
Repurposing A Seatpost Shim
20 Aug 2016
5 / 5
I recommend this product
ProsDoes the job for me.
I have a Tortec Explorer seatpost rack. It works perfectly on my old mountain bike with its massive 31.6mm seatpost but recently I bought a 31-year-old Bickerton, on which I want to occasionally fit a rack. The Bickerton has a 25.4mm seatpost and the rack's Q/R clamp won't go that small. This shim (the largest o/d I could find in silver to match the seatpost) solves the problem perfectly. Slide the shim onto the seatpost, slide the seatpost into the seat tube, clamp the rack to the shim, job's a good 'un.
Questions & Answers (1)
Confirm This Is25.4 Up To 27.8 Please
16 May 2014
SJS Customer Service:

The internal diameter of this shim is 25.4, the external diameter is available in lots of different sizes including the 27.8 size you are after. Just select the correct size from the dropdown menu.