Smith Mainline MIPS Helmet - S - Matte Black YGroup_7034280706093 Muc-Off used a biodegradable formula

Muc-Off used a biodegradable formula with this lube so it's safe for you and the environment

Co2 canisters are sold separately

7mm OD cup BB

The high torsion strength coupled with the hollow outer and inner plates and pins enable give it a heavy duty structure that is up for the task on any single speed setup

Dual-density EPS and EPP liner provide excellent protection against both high and low-speed impacts

Smith Mainline MIPS Helmet - S - Matte Black YGroup_7034280706093 Muc-Off used a biodegradable formulaThe Smith Mainline downhill certified enduro bike helmet is fine tuned for comfort and safety. It doesn't matter if you're slaying the EWS in Whistler or suffering through the last stage of your local enduro race, you need a breathable, lightweight helmet that pairs well with goggles and fits like a glove. Speaking of your goggles, fog is not your friend, and this helmet is crafted to integrate with your bike goggles for efficient venting and fog free