Simpson Racing SD1 Helmet - L - CopperLarge - Copper - SA2020 Hobby Stock Spring Cup - Upper -

Spring Cup - Upper - Oversize - 5-1/2 in OD Spring - Steel - Black Powder Coat - Universal - Set of 10

Suspension Tube - 7/8 in OD - 9 in Long - 5/8-18 in Female Thread - Steel - Black Zinc - Each

21 in Rectangular Port - Composite - Small Block Chevy - Kit

Panhard Bar - Over the Top Style - Adjustable - 15

Floor Jack Mount - Floor Mount - 1-Piece - 9 x 15

Simpson Racing SD1 Helmet - L - CopperLarge - Copper - SA2020 Hobby Stock Spring Cup - Upper -Simpson'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.