Cane Creek Thudbuster ST Suspension Seatpost - 30.9 x 375mm 50mm Black MFPN=00.6118.637.002 The gasket and valve core

The gasket and valve core are replaceable for extended product usability

with cut-outs to reduce weight and grooved for water displacement

Knowing that certain situations call for a range beyond that provided 10-42t or 11-42t cassettes

That is why these products carry the "Bio" label

Carrier SH 34 (for 24-35 mm tubes)

Cane Creek Thudbuster ST Suspension Seatpost - 30.9 x 375mm 50mm Black MFPN=00.6118.637.002 The gasket and valve coreCane Creek Thudbuster ST Suspension Seatpost 30. 9 x 375mm 50mm Black. Building on Thudbusters proven parallel linkage technology Cane Creek has completely re designed the seatpost for increased durability a higher rider weight limit additional suspension travel as well as ease of use through tool free elastomer change and a single bolt seat clamp design. Designed specifically with the rigors of e bikes and daily commuting in mind the Thudbuster ST