FOX Speedframe Pro Defy Helmet Size:- Medium (55-59cm) Thru-axle tread pitch = 1

Thru-axle tread pitch = 1

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

Compatible with Avid Elixir R

Brakes: Tektro HD-R280 hydraulic [F]160mm

FOX Speedframe Pro Defy Helmet Size:- Medium (55-59cm) Thru-axle tread pitch = 1Designed 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