Wiseco K481B100 BBC Quick Forged Piston Set Dome Bore CH - 16 45cc 4.600 1.270

The Wiseco K481B100 is a Professional Series Quick 16 forged piston set engineered for high-output Chevrolet Big Block 540 cubic inch race engines. Designed for use with 24° conventional heads, this set delivers a target compression ratio of 14.0:1 and is built to handle the demands of serious racing and heavy-duty performance builds.

Key Specifications:

• Bore: 4.600 in.
• Compression Height: 1.270 in.
• Dome Volume: +45.0cc Semi-Hollow Dome
• Wrist Pin Diameter: 0.990 in. Tool Steel Wall Pin
• Stroke Compatibility: 4.250 in.
• Rod Length Compatibility: 6.385 in.
• Advertised Weight: ~678 grams per piston
• Ring Grooves: .043 in. / 1/16 in. / 3/16 in. (rings sold separately)
• Head Design: 24° Conventional (Quick 16 Series)

Key Features:

• 2618 High-Strength Forged Aluminum — aerospace-grade alloy for superior tensile strength, impact resistance, and ductility under extreme conditions
• ArmorGlide® Skirt Coating — reduces friction, resists seizure, and promotes quieter operation
• Vertical Gas Ports — improve ring seal and combustion efficiency
• Anti-Detonation & Pressure Seal Grooves — added protection against detonation damage
• Tool Steel Wall Wrist Pin with Double Spirolox® — robust pin retention for high-load race applications
• Semi-Hollow Dome Design — optimizes combustion chamber volume while reducing reciprocating mass
• Strutted Skirt Design — enhances structural rigidity under load
• Engineered, forged, and machined in the USA at Wiseco's Mentor, Ohio facility

Wiseco's Professional Series pistons are built for racers who demand no-compromise performance. Compatible with BBC 540 cubic inch stroker combinations using a 4.250 in. stroke and 6.385 in. connecting rod. Note: Piston rings are sold separately.