Wiseco K0099B6 Pro Late Model Piston Kit Chevy Small Block 350 4.060 Bore -1.7cc Flat Top

The Wiseco K0099B6 is a complete Pro Late Model forged piston kit designed for the Chevrolet Small Block 350 engine. Built to stock-replacement dimensions with a 4.060 in. bore and -1.7cc flat top design, this kit delivers the strength and precision of a forged piston in a build-to-stock configuration — ideal for high-mileage rebuilds, circle track applications, and street performance engines that demand more than cast pistons can offer.

Key Features:

• Bore Size: 4.060 in.
• Valve Relief Volume: -1.7cc flat top (near-zero deck volume for near-stock compression ratios)
• Wrist Pin Diameter: 0.927 in.
• Application: Chevrolet Small Block 350 (Pro Late Model / Build to Stock)
• Construction: Forged aluminum for superior strength and heat resistance versus cast alternatives
• Series: Pro Late Model — engineered for stock-stroke rebuilds and entry-level performance builds
• Manufactured in the USA at Wiseco's Mentor, Ohio facility

Forged construction provides a tighter grain structure than cast pistons, resulting in superior strength and the ability to withstand higher cylinder pressures, heat cycles, and detonation events. The Pro Late Model series is specifically engineered for the Chevy SB 350 platform, ensuring proper fit and optimized ring seal right out of the box. Whether you're rebuilding a worn engine to factory specs or stepping up from unreliable cast pistons, the K0099B6 is a proven upgrade.