KB Hypereutectic Flat Top Pistons - SB Chevy 350 - 5.7" Rod Length, .060" Over Bore Size Swivel Fittings 5/8 in and 3/4 in

5/8 in and 3/4 in Shaft

Black Zinc

Note 1 - fits most Z-bars

Comes complete with all the necessary hardware for a fast

KB Hypereutectic Flat Top Pistons - SB Chevy 350 - 5.7" Rod Length, .060" Over Bore Size Swivel Fittings 5/8 in and 3/4 inModern piston design locates the top ring higher for improved performance. a high top ring operates at higher temperatures and requires a larger top ring end gap. To find the proper ring end gap, multiply your bore size by the ring end gap factor listed on the chart (i. e. , Street Normally Aspirated 4. 000" bore x . 0065" gap factor = . 026" total top ring end gap). Your hypereutectic performance piston will expand less than typical cast or forged