SRP Forged Flat Top Piston Set - SB Chevy - 4.030" Bore, 3.480" Stroke, 5.700" Rod Length BR1006 they are relieved for wire

they are relieved for wire O-rings on bottom

Features:CNC machined billet aluminum housing and Dupont Rynite baseNo CARB Exemption Order NumberSupplied with Cap-A-Dapt and rotor (accepts MSD socket style caps)Mechanical advance assembly can be locked out for crank trigger systemsNylon pads ensure smooth operation of the advance weightsAdvance weight pins are staked and tig welded to the plateAdvance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reductionPolished steel shaft is QPQ coated and guided by a sealed ball bearingMaintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangeEasy-to-adjust mechanical advance with supplied springs and stop bushings

7" full-color touchscreen LCD allows easy on-the-fly tuning

The shock and included hardware kit provide quick and easy ride height adjustability to get the perfect stance

SRP Forged Flat Top Piston Set - SB Chevy - 4.030" Bore, 3.480" Stroke, 5.700" Rod Length BR1006 they are relieved for wireSRP pistons, manufactured by JE, are "making performance affordable". SRP specific designed forgings eliminate several phases of the manufacturing process, saving time and cutting costs with high volume production. All pistons are machined to accept 1 16" top, 1 16" second and 3 16" oil rings. Sold in sets of eight, with wrist pins and double Spiro Locks. SRP pistons are designed and manufactured using the same knowledge, expertise, and quality