Engines and Components› Pistons and Piston Rings

JE Pistons

BBC NITROUS DOME GP

$1,281.66

SKU: J001 312688

In Stock
In Stock
Ships by Jun 7
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Non-Returnable Item
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Description

The JE Pistons 312688 is a Head Hunter Nitrous GP Series Piston Kit for Chevy 502 Big Block engines, sold as a set of 8. These are forged 2618 alloy pistons designed for a 4.600 inch bore, 4.250 inch stroke, and 6.135 inch rod length, with a 1.270 inch compression height and 44.00 cc dome volume. They feature an FSR forging design, vertical and lateral gas ports, accumulator groove, and skirt coating, making them suitable for nitrous applications.

Fitment

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Specifications

BrandJE Pistons
Part NumberJ001 312688

Videos

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Forged vs Cast Piston Strength!
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How to identify your JE Pistons
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Cast vs. Forged Pistons: Which One is Best for Your Engine?
Quench and Chamber Mods

Quench and Chamber Mods
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Piston Coatings 101: Which is the Right One for You?
How to Choose The Right Pistons

How to Choose The Right Pistons
Quench! Higher Compression with Less Detonation (A key to making more HP)

Quench! Higher Compression with Less Detonation (A key to making more HP)
Acetone and ATF for the win! Piston rings are free! Thanks UTG! #utg #nonamenationals #diy

Acetone and ATF for the win! Piston rings are free! Thanks UTG! #utg #nonamenationals #diy
10000 RPM Piston? Ed Smith shares another secret Engine Building and Racing experiences #classiccars

10000 RPM Piston? Ed Smith shares another secret Engine Building and Racing experiences #classiccars
820 heads Vs 049 heads with dome pistons

820 heads Vs 049 heads with dome pistons

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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