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Ross Subaru Piston Sets Subaru Forged Pistons Turbo WRX EJ20 EJ25

Ross Subaru Piston Sets Forged Subaru Pistons

Forged Subaru pistons from ROSS Racing Pistons are used in high performance and racing engines by professional engine builders the world over. Ross Subaru forged pistons combine light weight, high strength, precision machining and premium materials to build a forged piston you can depend on. Ross Subaru Pistons help provide improved torque, horsepower, efficiency and reliability. We sell these superb forged Subaru turbo piston sets at discounted prices with quick shipping. If you need help we are happy to provide technical assistance.

These ROSS EJ25 and EJ20 WRX piston sets include forced pin oilers when applicable and wrist pin retention lock rings. The pistons are pin fit and balanced to plus or minus 2.5 grams throughout the set. Valve pockets are radius machined and designed to handle most camshaft applications. The skirt design allows the pistons to work properly under intense heat and tremendous side loads without scuffing or splitting cylinder walls. Buy the best Subaru pistons made by Ross Pistons and enjoy improved torque, horsepower, efficiency and reliability.

Ross Turbo Subaru Piston and Ring Sets Subaru Forged Pistons

ross forged subaru piston image

  • COMPRESSION RATIO Based on factory head and gasket
  • RING GROOVES 99885 = 1.0, 1.2, 2.8 mm, 99726 = 1.5, 1.5, 3 mm
  • TECH-TIP Turbo applications include taper bore pins, part number 99885 will also work with SOHC heads
  • WHAT’S INCLUDED Forged piston set, Rings, Locks, H13 Taper Wall Wrist Pins


engine code bore stroke rod length head cc c.h. comp ratio dish volume weight in grams part number
EJ20 WRX 3.642 (92.5 mm) 2.952 5.135 45 1.275 8.5 -12 375 99885

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EJ25 DOHC 3.937 (100 mm) 3.11 5.135 48 1.192 8.5 -22.5 400 99726

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