Simpson Safety - Simpson Racing SA2020 Diamondback Racing Helmet Rocker Arm Nut - 7/16-20

Rocker Arm Nut - 7/16-20 in Thread - Steel - Black Oxide - Stud Girdle - Set of 16

Harness Hardware - Eye Bolt / Flat Washer / Nut - Steel - Cadmium - Kit

Fitting - Adapter - Straight - 6 AN Female Swivel to 3/8 in NPT Male - Aluminum - Blue Anodized - Each

Kickdown Bracket - Intake Manifold Mount - Steel - Cadmium - Small Block Chevy - Kit

Simpson Safety - Simpson Racing SA2020 Diamondback Racing Helmet Rocker Arm Nut - 7/16-20A 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. NOTE: This helmet is Snell SA2020 certified and is broadly accepted by race organizing bodies and tracks through 2030.