MAHLE 930248555 Forged Performance Piston Bore - 4.155 434ci

The MAHLE 930248555 is a precision-engineered forged performance piston designed for 434 cubic inch engine builds. This high-quality piston features a 4.155-inch bore diameter and is constructed from 4032 aluminum alloy, providing excellent temperature stability and allowing for tighter cylinder-to-wall clearances compared to other alloys.

Technical Specifications:

• Bore Diameter: 4.155 inches
• Compression Height: 1.245 inches
• Recommended Stroke: 4.000 inches
• Recommended Rod Length: 6.250 inches
• Pin Diameter: 0.927 inches
• Dish Volume: 26cc
• Piston Weight: 447 grams
• Compression Ratio: 10.0:1
• Material: 4032 Forged Aluminum Alloy

MAHLE pistons feature advanced performance coatings including phosphate dry lubricant protection in pin bores and ring grooves to prevent galling and micro-welding during initial startup and break-in. The proprietary Grafal anti-friction coating on the piston skirt reduces friction and wear for extended service life. These pistons are race-proven and suitable for high-performance street, strip, and motorsports applications.

As one of the world's largest OE piston manufacturers with over 90 years of racing heritage, MAHLE delivers unmatched quality, precision machining, and performance. Each piston is designed with light-weight, low-drag characteristics and features precision-machined ring grooves for optimal ring sealing and oil control.