Wiseco RED0047XS RED Series Chevy Small Block 400 Piston Set 4.120 In. Bore 1.250 In. CH -1cc Dome

The Wiseco RED0047XS is a RED Series forged piston set engineered for the Chevrolet Small Block 400 platform. Featuring a 4.120-inch bore, 1.250-inch compression height, and a -1cc dome profile, this set is purpose-built to deliver the strength and precision demanded by serious performance and racing applications.

Key Features:

• Race Engineered Design (RED™): Forged, engineered, and machined in the USA from 2618 aluminum for the tensile strength required in performance racing and power adder applications
• Dedicated Strutted Forgings: Engine-specific strutted design optimizes the strength-to-weight ratio for this application
• ArmorGlide® Skirt Coating: Reduces operating friction and noise while minimizing skirt and cylinder wall wear
• Horizontal Slot Pin Bore Oiling: Maintains optimal wrist pin and small-end lubrication for long service life
• Accumulator Groove: Helps maintain consistent ring seal and power output
• Premium Rings Included: Each part number ships with premium rings — no additional sourcing required

Specifications:

• Bore: 4.120 in.
• Compression Height: 1.250 in.
• Dome Volume: -1cc
• Pin Diameter: 0.927 in.
• Ring Grooves: 1/16 in. – 1/16 in. – 3/16 in.
• Cross-Reference: KE179M835

The Wiseco RED Series delivers the ultimate balance of performance and value for domestic V8 builds, from drag racing to circle track competition.