Seven 7 iDP Limited Edition Project 21 Pro Helmet - M-L - Holographic PLP|Model Year SRAM shifter casing is 4mm

SRAM shifter casing is 4mm in diameter and is compression free to ensure the most precise shift

replacement clamp

Only compatible with Microspline freehubs

and offer excellent vibration dampening for reduced hand fatigue and finger numbness on longer rides

strong enough for the tightest pedals

Seven 7 iDP Limited Edition Project 21 Pro Helmet - M-L - Holographic PLP|Model Year SRAM shifter casing is 4mmLooking for an open face helmet with a clean, modern look and advanced protection features? The Project. 21 meets all your requirements. Named after the number of vents, the Project. 21 combines massive airflow with the coverage demanded by increasingly technical bike parks, all mountain and enduro trails. This airflow gives a cooling effect to keep you comfortable whilst concentrating on the trail ahead. Like its full face sibling, the Project. 21