FOX Speedframe Pro Defy Helmet Size:- Medium (55-59cm) Shimano Dura-Ace BB92

Shimano Dura-Ace BB92

Also fits "Power Spline" cranks from SRAM using the 8mm thread bolt

with its lightweight

Rim Width (External): 20mm

FOX Speedframe Pro Defy Helmet Size:- Medium (55-59cm) Shimano Dura-Ace BB92Designed with input from our pro mountain bike athletes, the Speedframe Pro Defy Helmet has earned Virginia Techs best rating (5 stars) in its Bicycle Helmet Ratings program for a reason. This top tier open face mountain bike helmet offers a market leading feature set to keep you protected every time you hit the trails. Top of that list is the Mips Air Node protection system, a Low Friction Layer for fully ventilated lightweight helmets designed to