works on 9-12 speed chains

Standard crank chainline - (48 mm for 26-28T)

Straps: The A1 uses adjustable cam-lock strap dividers so you'll be able to tweak them to get it just right to suit your head

All seal kits include Foam Rings and crush washers

Leatt MTB All Mountain 2.0 Helmet - L - Flame Heavy/Bulky works on 9-12 speed chainsThe AllMtn 2. 0 helmet combines trail ready features with proven protection for riders who are always looking forward to their next adventure. With Leatt's 360 Turbine Technology, it helps reduce rotational forces and absorb low speed impact energy, while in moulded impact foam provides high speed impact protectionworking together as a 3 in 1 safety system. The lightweight polymer shell features 20 vents for consistent airflow, and a breathable,