STILO YA0600 Kit for installation drinking system to ST4/ST5 helmet ymm_15 No other vendor has anything

No other vendor has anything this rugged available

The wastegate is affordable and highly-reputed existing Special Wastegate

Built from high-grade lightweight titanium – with some parts cast in Akrapovič’s own foundry – this system will reduce exhaust system's weight

Optimized for intake airflow efficiency

STILO YA0600 Kit for installation drinking system to ST4/ST5 helmet ymm_15 No other vendor has anythingAnti backflow silicone rubber bite valve Water tube Male quick release coupling Stilo drinks system helmet kit for ST4 & ST5 helmets. Included in this pack is a male coupling, tube and rubber bite valve. The coupling assembly is designed to allow the driver a quick evacuation so that in case of emergency, by just a slight tug, the coupling slips off releasing the driver. All pipes are fitted to the helmet internally. For drink system bag (Hydration