Wiseco RED0020XS RED Series Chevy Small Block 400 Forged Piston Set - 4.125 in. Bore, -15cc Dish

Featuring a standard 4.125 in. bore, 1.550 in. compression height, and a -15.00cc dish crown, these pistons are engineered for performance builds ranging from drag racing to circle track competition.

Wiseco engineers and machines these pistons in the USA from 2618 aluminum alloy, providing the tensile strength required for power adder applications including forced induction and nitrous. The dedicated strutted forging design optimizes the strength-to-weight ratio for each specific engine platform, while the ArmorGlide® skirt coating reduces operating friction, minimizes cylinder wear, and quiets piston operation.

Key Features:

• Application: Chevrolet Small Block 400
• Bore Size: 4.125 in. (standard)
• Compression Height: 1.550 in.
• Dish Volume: -15.00cc
• Wrist Pin Diameter: 0.927 in.
• Forging Material: 2618 aluminum alloy — engineered for performance and power adder use
• ArmorGlide® Skirt Coating: Reduces friction, noise, and skirt/cylinder wear
• Horizontal slot oiling in pin bores for optimal wrist pin and small-end lubrication
• Accumulator groove helps maintain consistent ring seal and power output
• Includes premium ring set — no additional sourcing required
• Dedicated strutted forging for engine-specific strength-to-weight optimization

Wiseco RED™ series piston sets are available for a range of popular domestic V8 platforms and represent the ideal balance of performance and value for moderate to heavy-duty builds.