Wiseco K0025B125 Professional Series Forged Dome Piston Set BBC 540 4.625in Bore 14.7:1

The Wiseco K0025B125 Professional Series Forged Dome Piston Set is engineered for serious Big Block Chevy 540 race builds demanding maximum compression and reliability. Designed for use with 24-degree conventional cylinder heads, these pistons deliver a high 14.7:1 compression ratio with a lightweight hollow dome design that displaces +48.7cc.

Forged and precision CNC-machined in the USA from 2618 aluminum alloy for superior tensile strength under heavy-duty race conditions, these pistons are built to handle the rigors of naturally aspirated, turbocharged, supercharged, and nitrous-fed applications. The full round-type skirt geometry promotes optimal cylinder wall contact and stability at high RPM.

Key Features:

• Bore: 4.625 in.
• Compression Height: 1.270 in.
• Stroke: 4.250 in.
• Rod Length: 6.385 in.
• Dome Volume: +48.7cc hollow dome (lightweight)
• Compression Ratio: 14.7:1 (with 24-degree conventional heads)
• Wrist Pin Diameter: 0.990 in.
• Piston Weight: ~675 grams each
• ArmorGlide® Skirt Coating for seizure resistance, friction reduction, and quieter operation
• Precision ring grooves with anti-detonation groove and enhanced ring seal features
• Forced pin oiling for improved lubrication under race loads
• Designed for 24-degree conventional cylinder heads

Wiseco's Professional Series represents their no-compromise line for heavy to severe duty race builds. Premium rings, chromoly wrist pins, and Spirolox retainers are included, making this a complete piston assembly solution for your BBC 540 build.