JE LS7 Asymmetrical FSR Flat Top Forged Piston (J312002)
Description
LS 4.185" PISTON -5cc 4.100 ST 4.185" bore, 4.100" stroke, 6.125" rod length, -5cc dome volume Part Number: J312002
GM LS Flat Top Our brand new Asymmetrical FSR (Forged Side Relief) forging design allows for the use of the mostpopular stroke and rod combinations while eliminatingreluctor wheel clearance problems. Asymmetrical forgingdesign maintains a larger skirt on the heavily stressed major thrust side, while reducing friction with a smaller skirt on the minor thrust side. The result is a high strength, lightweight piston that significantly reduces friction in your engine. Lightweight and extremely durable, these pistons are machined for 1.2mm, 1.5mm, 3.0mm rings.
Includes:
- .927 x 2.250 straight wall carbon steel wrist pin
- Wire locks
Specifications:
- Part #: J312002
- Bore: 4.185"
- Oversize: .060"LS7
- Stroke: 4.100
- Rod Length: 6.125"
- Compression Height: 1.065"
- Compression Ratio with 64cc chamber volume: 12.8
- Compression Ratiowith 68cc chamber volume: 12.2
- Compression Ratiowith 70cc chamber volume: 11.9
- Dome Volume: -5cc
- Gram Weight:
- Footnote:A Forged Side Relief
- Reconmended Ring Set: J91008-4185-5
Withover 60 years of experience, JE Pistons is the leader in high performance forged pistons. We've built a reputation that the competition can only follow. JE has a history of manufacturing the highest quality pistons and componentsthat professional engine builders, race teams, and highperformance enthusiasts trust and rely on.
The top engine builders in NASCAR, ALMS, NHRA, AMA Supercross andothers choose JE Pistons over any other brand. For over 60 years, JE's position at the forefront of performance piston manufacturing has been a result of continuous research and development of unique materials, piston designs and technologies. Utilising State-Of-The-Art CNCmachines for manufacturing along with purpose-designed forgings, JE is able to maintain exacting specificati...