JE Pistons Chevrolet LS Gen 3/4 3.898 in Bore - Set of 8 FSR Piston Kit
321241
JE Pistons LS1 Extreme Duty FSR Piston Kit
3.898 in. Bore – 1.315 CD – [-19.9 cc] – Inv. Dome/Dish – 8 Cyl. Piston Kit
As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons for domestic applications. Engineered, forged and machined 100% in the USA, JE Pistons are designed for each specific engine and racing application to provide the ultimate combination of durability and performance. From dirt track to drag strip, JE Pistons’ performance is proven in victory lane time and time again. Equip your engine with the best in forged pistons.
- Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications
- Designed specifically for each engine and use application to provide optimized performance durability
- Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin
- Skirt coating (depending on application) reduces friction and wear on piston skirts and cylinder walls while simultaneously reducing operating noise
- Accumulator groove (depending on application) helps reduce pressure from combustion gases, reducing ring fluttering and improving ring seal for consistent power
- Made 100% in the USA
Piston Series
JE Pistons
Cylinder Head
LSX/L92 12 DEG
Bore Diameter
3.898 IN
Piston Head Type
Dish
Compression Height
1.315 IN
Piston Volume
-19.90 CC
Piston Material
2618
Piston Quantity
8
Forging Type
FSR
Piston Average Weight
421 GR
Ring Set Included
No
Top Compression Ring Thickness
0.0600 IN
Second Compression Ring Thickness
0.0600 IN
Wrist Pin Included
Yes
Wrist Pin Part Number
927-2250-15-51C
Wrist Pin Material
5115 Low Carbon Steel, Case Hardened
Wrist Pin Outer Diameter
0.927 IN
Wrist Pin Length
2.250 IN
Wrist Pin Wall Thickness
0.170 IN
Wrist Pin Retainer Included
Yes
Ring Set Thickness
1.50 MM x 1.50 MM x 3.00 MM
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