Genetic Seatpost Shim 30.9mm to 31.6mm CheckoutSpec= Blue Chrome - Small Air can volume adjustment (via

Air can volume adjustment (via spacers) in both the positive and negative chambers

} Fast to attach and remove

Proper air pressure is 280-300psi at full extension

130mm mudflaps provide ultimate coverage and are double riveted for durability

The Canti Lever is a short pull brake lever for use with short pull brakes like cantilevers center pull brakes and side pull caliper brakes

Genetic Seatpost Shim 30.9mm to 31.6mm CheckoutSpec= Blue Chrome - Small Air can volume adjustment (viaAllows you to fit a smaller diameter seatpost into an oversize seat tube Long shim length protects frame and post from unwanted movement Precision CNC machined alloy with top lip Model Seatpost Shim OD 31. 6mm ID 30. 9mm