RACETEC LS 15deg EXTREAM DUTY FSR FORGED PISTON SET (PART #RTC-1000939)

RaceTec Race Pistons

RaceTec pistons are the highest quality, precision manufactured options available made from forged or billet 2618 aluminum alloy. Utilizing the latest in CAD software and modern CNC machining centers, it is extremely durable and perfect for your high-horsepower application. RaceTec's in-house design and dyno-proven forgings ensure the strongest and lightest piston for your requirements. They offer a long list of sizes and styles. Choose the proper fit for your build.

Features for most RaceTec pistons:

  • CNC Precision used in every manufacturing operation
  • Valve pockets machined for oversized valves and high lift cams
  • Critically machined ring grooves
  • Top ring land gas distribution grooves to enhance performance and improve ring seal
  • Wrist pins, pin fit, wire locks, broached double pin oilers, and accumulator groove are included
  • Diamond tooling used throughout production, including ring grooves and skirts

SPECIFICATIONS

Engine Family LS 15deg Extream Duty FSR
CID/Ltr 387/6.3
Bore Inch 4.125
Bore mm 104.78
Stroke Inch 3.622
Stoke mm 92
Rod Length 6.125
Comp Dist 1.304
Crown Volume -21.8cc
CR 1 9.3 @ 65cc
CR 2 9.0 @ 68cc
CR 3 8.8 @ 70cc
Alloy 2618
Weight Call
Pin 0.927
Oil Rails Included N/A
Top Ring 1.5mm
2nd Ring 1.5mm
Oil Ring HT 3.0mm
Piston Style Dish

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