Forged 4.065" Bore Flat Top Piston Set, -5cc, 3.622" Stroke, 6.125" Rod 1.315" Comp Height. Suit GM LS3/L92

SRP Pistons is proud to offer a high tech addition to our very popular product line. SRP Professional pistons include features used in professional racing such as lightweight forged side relief (FSR) forgings, high quality wrist pins, and precision CNC machined ring grooves and skirts. In addition, every package includes JE Pro Seal Premium Piston Rings. The included ring set features a 1.2 premium steel top ring, 1.5mm Napier (hooked face) second ring and 3.0mm standard tension oil ring. Every piston is designed and manufactured in the USA at the advanced JE/SRP Pistons manufacturing center.

Rings Included:

• Lightweight, low friction metric ring package included
• 1.2mm CARBON STEEL top ring, 1.5mm Napier 2nd ring, 3.0mm standard tension oil ring
• Minimal filing required

Pins & Locks:

• High quality 2.250" pin further reduces reciprocating weight
• Carbon steel wire locks included

Specifications:

• Engine: CHEVROLET LS GEN III/IV
• Bore Diameter: 4.065
• Compression Height: 1.315
• Compression Ratio with 64cc chamber volume: 10.9
• Compression Ratio with 66cc chamber volume: 10.6
• Compression Ratio with 72cc chamber volume: 10.0
• Piston Volume: -5
• Cylinder Head: LSX/L92 12 DEG
• Piston Pin Outside Diameter: 0.927
• Piston Pin Length: 2.250
• Piston Pin Material: 5115
• Ringset Included: Yes
• Top Compression Ring Thickness: 1.2mm
• Second Compression Ring Thickness: 1.5mm
• Oil Ring Thickness: 3.00mm
• Piston Material: 4032
• Forging Type: FSR
• Piston Avg Weight: 440
• Pin Wall Thickness: 0.150
• Piston Type: Flat
• Ring Set: JG31F8-4070-0