United Supreme Pivotal Seat Post RIM D Built for strength and durability

Built for strength and durability from 6061-T6 alloy that's paired with a female 14mm 4140 heat-treated chromoly axle

with a comfortable ribbed grip and classic mushroom design

For the Bluebird chain

ergonomic shape is designed for grip and support with micro-knurling and molded pins across the surface for improved traction

Replacement nylon guard for the AK guard sprocket

United Supreme Pivotal Seat Post RIM D Built for strength and durability6061 Aluminium Pivotal seat post from United. The Supreme post is machined inside to save weight and comes in 3 different lengths. For use with Pivotal seats only. ###section### Product Specs TYPE: Pivotal LENGTH: 150mm 200mm 320mm DIAMETER: 25. 4mm WEIGHT: 110g 3. 9oz