Simpson Racing SD1 Helmet - L - Matte BlackLarge - Matte Black - SA2020 Legend 5 in Length - 650

5 in Length - 650 lb/in Spring Rate - Front - Steel - Silver Powder Coat - Each

Wheel Hub - Grand National - 5 x 4

Axle Housing Tube - 26 in Long - 2-1/2 in OD - Straight - 0

Motor Oil - XP6 - 15W50 - Synthetic - 1 qt Bottle - Each

Carburetor Fuel Line - 8 AN Single Male Inlet - 3/4-16 in O-Ring Dual Outlets - Braided Stainless Hose - Black - Holley 4150 - Kit

Simpson Racing SD1 Helmet - L - Matte BlackLarge - Matte Black - SA2020 Legend 5 in Length - 650Simpson's, lightest and most aerodynamic helmet, the SD1 is a premium helmet at a reasonable price. The helmet is tailored towards open wheel dirt track racing with no front vents and a front chin spoiler.