Wiseco K0096B135 Chevy Small Block Pro Late Model Flat Top Forged Piston - 350 5cc Set

The Wiseco K0096B135 is a forged piston set designed for the Chevrolet Small Block 350 in 21°–23° Pro Late Model racing applications. Featuring a -5cc flat top (FT) dome, these pistons are engineered to deliver the strength, precision, and consistency demanded by competitive circle track and late model racing. This is a build-on-demand kit.

Key Features:

• Bore Size: 4.135 inches
• Dome Volume: -5cc flat top design
• Compression Ratio: Approximately 11.3:1 (dependent on head and gasket combination)
• Head Angle Compatibility: 21°–23° cylinder heads
• Valve Pockets: Intake .300" / Exhaust (matched to Pro Late Model cylinder head specs)
• Forged aluminum construction for superior strength-to-weight ratio versus cast alternatives
• CNC-machined to tight tolerances for consistent fitment and sealing
• Optimized skirt profile to minimize piston rock and extend skirt life, ideal for stroker applications
• Forged and machined entirely in the USA by Wiseco

Why Forged? Unlike cast pistons, forged pistons feature a condensed, aligned grain structure that provides significantly higher mechanical properties, improved impact resistance, and superior fatigue strength — critical qualities for high-output racing engines. Wiseco forges all pistons in-house, controlling every stage from raw material to finished skirt coating.

The Wiseco K0096B135 is a build-on-demand piston set, meaning it is manufactured to order. It is the ideal choice for engine builders competing in Pro Late Model classes requiring 21°–23° small block Chevy cylinder head configurations.