with sealed hubs front and back keeping it rolling smooth

It features a unique Driver which uses Z shape pawls allowing for adjustment from 1/8 of a crank to 1/3 of a crank by changing the Slack Cam ring

Kevlar base pivotal seat fromProfile with fat padding

Weighing only 130 grams

The classic fat Pivotal base with the Boss flavor all over it

Box One Expert Race Spoke Kit supplier_54525233889606 with sealed hubs front andFeaturing a heavily double butted 14 gauge spoke (2. 0 1. 5 2. 0mm) the Expert Spoke Kit is lighter AND stronger than traditional straight 15 gauge spokes. This is possible by using a spoke that is 14g at the ends but slims down 17g in the middle; this combination makes for an exceptional strength to weight ratio. Additionally included is lightweight black anodised aluminium nipples to further reduce rotational weight.