16 notch 39mm OD cups

Fitting on the fork crown

Several mesh and slip pockets

3 optical and impact standards

Super long 47" hose to reach valves in stands or car racks

Race Face Crank Boots Pair - Grey - Medium - Carbon Envelope Shipping 16 notch 39mm OD cupsProtect your carbon or alloy cranks from the abuse of trail riding. These are a must have item when using carbon cranks. We use these boots with our Race Face cranks and they have held up extremely well and have done an exceptional job protecting the crank arms. No more worrying about bashing your crank arms on rough trails! To install, remove pedals and slip over the end of your crank arms. Medium Carbon Compatibility: Sixc Cinch Sixc (24mm Spindle)