How many pistons: These are the 4 piston version

Compatible with most masterlinks (Shimano Quick-Link

Metrea BR-U5000

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Fox Rampage MIPS Helmet - XL - Vintage White PDP|PLP|Rail Material How many pistons: These areBorrowing heavily from the Rampage Pro Carbon, the Rampage uses a lightweight fibreglass shell and excellent ventilation to keep you cool and protected at an affordable price point. With an adjustable visor, double D Ring closure, and injected mesh vent screens to keep out dirt and debris, The Rampage is an excellent choice if you are looking for a budget friendly full face helmet that doesn't skimp on safety features. Who's this item for: Anyone