Onyx BMX Front Hub - 3/8", 10 x 100mm, 28H Larger Helix Color:Black CK-1 cranks are Promax’s top-of-the-line

CK-1 cranks are Promax’s top-of-the-line carbon crank offering

10mm & 20mm available

VLT (Visible Light Transmission) 14

Speedster is available in a range of sizes and tread compounds to suit racers of all ages

Cold forged

Onyx BMX Front Hub - 3/8", 10 x 100mm, 28H Larger Helix Color:Black CK-1 cranks are Promax’s top-of-the-lineMachined to the tightest tolerances. All Onyx hubs come standard with ceramic hybrid bearings for extremely low rolling resistance so there is no need to upgrade. Ceramic hybrid bearings 7075 Aluminum Hub Shell Adjustable preload Titanium bolts Extremely low rolling resistance 5 year limited warranty Made in the USA