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Forged Piston Kits

Cosworth forged pistons are engineered and manufactured in the UK using the same processes developed for their Formula 1 engines. Features include xylan anti-scuff skirt coatings, ultra-strong pins, polished domes, and anti-detonation bands. Each application uses a unique forging to minimize weight and ensure the strongest possible piston. Most applications use a proprietary Cosworth alloy similar to 4032, a high silicon alloy with a low expansion rate and high wear resistance making it ideal for extreme street performance as well as dedicated track applications. Piston kits are priced with rings. Replacement ring sets are also available separately.

Usually ships in 2 to 3 days.

Manufacturer: Cosworth

Applications:

  • Mitsubishi EVO 4-9 (4G63)
  • Mitsubishi EVO X (4B11)
Part No. Description Bore Size Price Ea. Add to Cart
10001449 Cosworth Piston & Ring Set EVO IV-IX Std. Stroke 8.8:1CR 85.5mm $799.99
RCH-3690 Cosworth Piston & Ring Set EVO IV-IX Std. Stroke 8.8:1CR 86.0mm $995.00
10001456 Cosworth Piston & Ring Set EVO X Std. Stroke 9.2:1CR 87.0mm $829.99
RCH-9276 Cosworth Piston & Ring Set EVO X 94mm Stroke 10.0:1CR 86.0mm $995.00
Replacement Parts
Part No. Description Bore Size Price Ea. Add to Cart
RCH-7317 Piston Ring Set For Cosworth Piston Kit 85.0mm $137.00
RCH-7318 Piston Ring Set For Cosworth Piston Kit 85.5mm $137.00
RCH-2246 Piston Ring Set For Cosworth Piston Kit 86.0mm $134.00
RCH-5706 Piston Ring Set For Cosworth Piston Kit 87.0mm $134.00
PA1846 Spare 22mm Piston Pin For Cosworth Piston Mitsubishi $40.00