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JE Pistons BMW N55B30 84mm Bore 9.5:1 Compression Ratio -14.7 Dish FSR Piston - Set of 6
JE Piston

JE Pistons BMW N55B30 84mm Bore 9.5:1 Compression Ratio -14.7 Dish FSR Piston - Set of 6

Regular price $2,100.00 $0.00 Unit price per
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338096

JE Pistons BMW N55B30 Piston Kit – 84.00 Mm Bore – 1.275 In. CH, -14.70 CC

JE, BMW, N55B30, 3.307 in. Bore, 9.50:1, Inverted Dome/Dish, 6 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 European, import and sport compact 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 drift 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
  • Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings
  • Made 100% in the USA
Piston Series

JE Pistons

Cylinder Head

N55B30

Bore Diameter

84.00 MM

Piston Head Type

Dish

Compression Height

1.275 IN

Piston Volume

-14.70 CC

Piston Material

2618

Piston Quantity

6

Forging Type

FSR

Ring Set Included

Yes

Top Compression Ring Thickness

0.0400 IN

Second Compression Ring Thickness

0.0480 IN

Oil Ring Thickness

0.111 IN

Wrist Pin Material

5115 Low Carbon Steel, Case Hardened

Wrist Pin Length

2.250 IN

Wrist Pin Wall Thickness

0.150 IN


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