Precisely Machined Pin Bores

• Accommodate fixed or floating wrist pins
• Machined for circlips
• Unsurpassed dimensional accuracy - diameter, +/-2.5 microns; straightness, 2.5 microns; roundness, 2.0 microns
• Large, precision-machined lube slots ensure worry-free operation

Weight-Matched Precision

• Piston/pin assemblies weight-matched to 4 gram (+/- 2 gram) maximum variation within each complete set

Next-Gen Skirt Coating

• Proprietary DUROSHIELD skirt coating
• Significantly reduces friction across entire RPM range
• Increases wear resistance for extended component life
• Superior NVH reduction

Exclusive FM 425 Aluminum Alloy

• Same material used in today's Cadillac, Corvette and Camaro engines
• 16% silicon content
• Superior thermal characteristics allow tighter wall clearances
• Propriety heat-treat process ensures superior strength

Diamond Optimized Skirt Profile

• Thermally compensated profiles prevent wall contact, piston slap
• Skirt "barrel" profile promotes oil wedge between skirt and wall
• Custom ovality prevents scuffing/scoring on outside corners

Fully Machined Bowl & Valve Reliefs

• Ultra-consistent compression ratio across all cylinders
• Maintanins consistent compression ratio across all cylinders

Custom TAC Ring Groove Geometries

• Machined "up-tilt" offsets thermal arching distortion
• Maintains optimal ring face-to-bore alignment for increased power, reduced oil consumption
• Groove "wave" held to max. of 15 microns
• TAC-Thermal Arching Compensation