WISECO-PRO TRU PTS523A903 Pro Tru Street Forged Dome Piston and Ring Set for GM LS-Series

Upgrade your GM LS-Series engine with the WISECO-PRO TRU PTS523A903 Pro Tru Street Series forged piston and ring set. Designed for street and performance applications, this kit features durable forged construction and a domed piston profile that supports efficient combustion chamber volume management. The set is engineered for a 3.903-inch bore and includes a 1.335-inch compression height for compatibility with properly matched LS-Series engine combinations.
The pistons feature a plus 4.00 cc dome volume and are designed with 1/16-inch, 1/16-inch, and 3.0 mm ring grooves. This configuration supports dependable oil control, compression sealing, and everyday performance when paired with the correct cylinder preparation, connecting rods, crankshaft, and engine clearances. The included rings help simplify installation while providing a matched solution for the piston design.
WISECO-PRO TRU is known for performance-focused piston engineering, and the Pro Tru Street Series delivers a practical combination of forged strength and street-oriented versatility. The PTS523A903 kit is intended for qualified engine builders and enthusiasts who require properly selected components for a GM LS-Series build. Verify bore size, compression height, dome volume, ring groove specifications, piston-to-valve clearance, and all other application requirements before installation.

Features:

• Brand: WISECO-PRO TRU

• Part Number: PTS523A903

• Series: Pro Tru Street

• Application: GM LS-Series engines

• Construction: Forged pistons

• Piston Style: Domed

• Bore: 3.903 inches

• Compression Height: 1.335 inches

• Ring Grooves: 1/16 inch x 1/16 inch x 3.0 mm

• Dome Volume: Plus 4.00 cc

• Kit Type: Piston and ring set