What components are included in this JE Pistons set?

This set includes six forged pistons, high-quality wrist pins, wrist pin locks, and JE Pro Seal premium piston rings. Everything needed to install the pistons is provided.

What is the FSR design and why is it beneficial?

The FSR (Forged Side Relief) design is a proprietary JE Pistons forging that reduces skirt width and uses a shorter wrist pin. This helps minimize friction and power loss while also saving weight.

Are these pistons suitable for all BMW N55B30 engines?

These pistons are specifically designed for the BMW N55B30 engine. However, they are not CARB approved and cannot be shipped to California. Always confirm fitment for your specific build.

JE Pistons Forged Piston Set 338096 for BMW N55B30

Name: JE Pistons BMW N55B30 84mm Bore 9.5:1 Compression Ratio -14.7 Dish FSR Piston - Set of 6
Brand: JE Pistons
SKU: je-pistons-je-pistons-bmw-n55b30-84mm-bore-9-5-1-compression-ratio-14-7-dish-fsr-t14-168941
Price: 1649.99 USD
Availability: InStock

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

$1649.99

Only 3 left in stock

JE Pistons forged piston set for BMW N55B30. Features FSR design for reduced friction and includes premium rings and pins.

Key Features

Set includes six forged pistons for the BMW N55B30 engine.
Features an 84mm bore and a 9.5:1 compression ratio with a -14.7 dish.
Proprietary Forged Side Relief (FSR) design minimizes friction and power loss.
Constructed from 2618 aluminum for high tensile strength in performance applications.
Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings.
Made 100% in the USA by JE Pistons.

This piston set is designed for the BMW N55B30 engine. Please verify compatibility with your specific vehicle application.

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Product Details

This JE Pistons set gives you six forged pistons specifically made for the BMW N55B30 engine. Each piston has an 84mm bore and a 9.5:1 compression ratio, featuring a -14.7 dish design. You'll also get high-quality wrist pins, locks, and JE Pro Seal premium piston rings to complete the set.

JE Pistons uses a proprietary Forged Side Relief (FSR) forging design, which helps minimize friction and power loss by using a reduced skirt width. This design, combined with a shorter wrist pin, also saves weight. The pistons are forged in the USA from 2618 aluminum, a material chosen for its high tensile strength, which is crucial for demanding performance applications. Depending on the specific application, these pistons may also feature an accumulator groove to reduce combustion gas pressure and improve ring seal, and a skirt coating to further reduce friction and wear while quieting operation.

These pistons are engineered specifically for the N55B30 engine, aiming for an optimized balance of performance and durability. Everything in this kit is made 100% in the USA, reflecting JE Pistons' extensive experience in performance engine building.