A complete upgrade kit with 4130 heat-treated cranks, axle, sealed BB conversion kit and black pedals. This 48 spline set is designed to go on Rocker 1 mini BMX, Rocker 2 and Irok bikes from Rocker.
Axle length = 14 cm
Crank arm length = 11.5 cm
There are no reviews in English. Show reviews in other languages (2 reviews)