Simpson Racing DiamondBack Motorcycle/Race Helmet Black- 7 3/8 - DOT/SNELL egr system Metal on metal internals and

Metal on metal internals and a greasable design for maximum longevity and noise-free operation

4 Inch Single Inlet/ Single Outlet

tuning or programming issues can create symptoms that resemble a failing high-pressure oil pump

Installs easily with basic hand tools

Includes replaceable filter

Simpson Racing DiamondBack Motorcycle/Race Helmet Black- 7 3/8 - DOT/SNELL egr system Metal on metal internals andA major revision to our Simpson Diamondback for 2021 combines a new Italian composite shell with a shorter chinbar and changes to the visor mounting for improved fit and function while also providing enhanced impact protection. Helmet ships with one clear face shield installed, additional face shields may be purchased separately. Features: Recessed eye port offers a 100% shield seal Head restraint ready Italian composite shell Your helmet ships with