2.2 (RG): includes 22/32t or 24/36t 8/9-speed TruShift 7075-T6 alloy chainrings with polycarbonate RockGuard and M12 crank/BB bolts. 1-piece forged AL-66 aluminum arms with CrMo pedal inserts and Howitzer-specific bottom bracket interface (BB sold separately). 872g (without BB).
Features:- Includes high-impact RockGuard with reinforced bolt holes and integrated steel washers
Forged, 1-piece AL-6061-T6 construction with black anodized chainringsIncludes M12 capless steel crank boltsHeat-treated CroMoly pedal thread inserts