KB Claimer Performance Series SB Chevy Flat Top Piston Set - 4.155" Bore - 3.750" Stroke - 5.565" Rod Length 2050081 A real must to use

A real must to use for sport compact competition and performance uses

and -3AN to 1/8" NPT female 90 degree fittings

These quieter sounding systems are designed to replace original rear mounted mufflers located behind the rear axle using factory style connections

5/16 in OD

Rack travels 5

KB Claimer Performance Series SB Chevy Flat Top Piston Set - 4.155" Bore - 3.750" Stroke - 5.565" Rod Length 2050081 A real must to useAchieve maximum performance with high piston ring placement and low thermal conductivity. Top rings operate at higher temps and require slightly larger end gaps (4. 000" bore x . 0065" gap factor = . 026" total end gap). It is recommended that ignition timing be retarded 2 4 degrees. Sold in sets of eight with wrist pins. Coated skirts. Designated as O. E. relacement for engines manufactured in years Truck 69 78, Passenger Car 69 70, Corvette 90 91.