Piston Set for Acura RSX Type S K20A K20A2 K20Z1 Engines
P4-HK86-N6
Bore: 86.02mm
Over Size: STD
Comp Ratio: 9:1
Volume CCs: -6
Head CCs: 50.7
Comp Height: 30mm
Stroke: 3.386"
Rod Length: 5.472"
Pin Diam: 22mm (.866")
P4-HK86-P6
Bore: 86.02mm
Over Size: STD
Comp Ratio: 11.2:1
Volume CCs: 6.5
Head CCs: 50.7
Comp Height: 30mm
Stroke: 3.386"
Rod Length: 5.472"
Pin Diam: 22mm (.866")
P4-HK86-P8
Bore: 86.02mm
Over Size: STD
Comp Ratio: 11.6:1
Volume CCs: 8
Head CCs: 50.7
Comp Height: 30mm
Stroke: 3.386"
Rod Length: 5.472"
Pin Diam: 22mm (.866")
P4-HK86-P11
Bore: 86.02mm
Over Size: STD
Comp Ratio: 12:1
Volume CCs: 11
Head CCs: 50.7
Comp Height: 30mm
Stroke: 3.386"
Rod Length: 5.472"
Pin Diam: 22mm (.866")
P4-HK86-P15
Bore: 86.00mm
Over Size: STD
Comp Ratio: 12.5:1
Volume CCs: 11.4
Head CCs: 50.7
Comp Height: 30mm
Stroke: 3.386"
Rod Length: 5.472"
Pin Diam: 22mm (.866")
P4-HK8650-N6
Bore: 86.50mm
Over Size: +0.50mm
Comp Ratio: 9:1
Volume CCs: -6
Head CCs: 50.7
Comp Height: 30mm
Stroke: 3.386"
Rod Length: 5.472"
Pin Diam: 22mm (.866")
P4-HK865-P6
Bore: 86.50mm
Over Size: +0.50mm
Comp Ratio: 11.2:1
Volume CCs: 6.5
Head CCs: 50.7
Comp Height: 30mm
Stroke: 3.386"
Rod Length: 5.472"
Pin Diam: 22mm (.866")
P4-HK8650-P8
Bore: 86.50mm
Over Size: +0.50mm
Comp Ratio: 11.6:1
Volume CCs: 8
Head CCs: 50.7
Comp Height: 30mm
Stroke: 3.386"
Rod Length: 5.472"
Pin Diam: 22mm (.866")
P4-HK8650-P11
Bore: 86.50mm
Over Size: +0.50mm
Comp Ratio: 12:1
Volume CCs: 11
Head CCs: 50.7
Comp Height: 30mm
Stroke: 3.386"
Rod Length: 5.472"
Pin Diam: 22mm (.866")
P4-HK8650-P15
Bore: 86.50mm
Over Size: +0.50mm
Comp Ratio: 12.5:1
Volume CCs: 11.4
Head CCs: 50.7
Comp Height: 30mm
Stroke: 3.386"
Rod Length: 5.472"
Pin Diam: 22mm (.866")
P4-HK87-P8
Bore: 87.00mm
Over Size: +1.0mm
Comp Ratio: 11.5:1
Volume CCs: 8
Head CCs: 50.7
Comp Height: 30mm
Stroke: 3.386"
Rod Length: 5.472"
Pin Diam: 22mm (.866")
P4-HK87-P15
Bore: 87.00mm
Over Size: +1.0mm
Comp Ratio: 12.5:1
Volume CCs: 11.4
Head CCs: 50.7
Comp Height: 30mm
Stroke: 3.386"
Rod Length: 5.472"
Pin Diam: 22mm (.866")
P4-HK875-P15
Bore: 87.50mm
Over Size: +1.5mm
Comp Ratio: 12.5:1
Volume CCs: 11.4
Head CCs: 50.7
Comp Height: 30mm
Stroke: 3.386"
Rod Length: 5.472"
Pin Diam: 22mm (.866")
Includes: Coated Pistons, Wrist Pins, Locks and NPR Rings
Supertech applies over 40 years of experience in designing and manufacturing high performance racing pistons. Each piston is designed utilizing the latest in CAD software and finite element analysis (FEA) and manufactured from enhanced 4032 alloy. This material features low thermal expansion, excellent wear resistance and a higher thermal conductivity. All of our pistons are created using a 2 or 3 step forging process (depending on the application) which yields the finest structural grain orientation and the strongest piston possible. Each piston then goes through several heat treatments to ensure high tensile strength and evenly distributes hardness. From there several machining steps take place on specifically designed CMC machines to ensure flatness of the ring grooves. All Supertech pistons feature contact reduction grooves and honed pin bores for a precise fit.