Cassette Cogs: 11-13-15-18-21-24-28-32-37-42

Dual Density Design with Hard Inner Shell & Soft Outer Casing

use a 10 speed chain)

Return spring and safety pin included

outer rings have PowerGlide pins/ramps

Cane Creek THUDBUSTER ST Suspension Seatpost 30.9 X 375mm Black giant Cassette Cogs: 11-13-15-18-21-24-28-32-37-42Building 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 (short travel) has 50mm of travel to significantly diminish shocks