Road- Junior Racing Bicycle Chain Wheel & Crank Sets

We are offering road- junior racing bicycle chain wheel & crank sets . Model fr3922a chainring 46t 34t (910's) outer ring alloy sb bk anodized cnc center ring na inner ring alloy sb anodized ring fixation interchangeable arm finish polish silver or bk anodized crank material 6061 alloy forged length 170, 165, 155, 140, 135mm bcd 110mm chainguard optional axle fixing bolt cro-mo (m8) chainline 43.5mm square ● taiwan● china isis ● taiwan ○china