MAHLE 929833700 Forged Dome Piston Set Toyota 2ZZ-GE 1.8L 82.01mm Bore 12.5CR 4032

The MAHLE 929833700 is a complete forged dome piston and ring set engineered for the Toyota 2ZZ-GE 1.8L engine. Machined to a 82.01mm bore with a 12.5:1 compression ratio, this high-performance kit is designed as a fully finished, drop-in forged piston assembly — everything is ready to install right out of the box.

Forged from 4032 low-expansion aluminum alloy, these pistons deliver superior strength while allowing for tighter cylinder-to-wall clearances and improved temperature stability compared to standard aluminum. MAHLE's proprietary Grafal anti-friction skirt coating reduces parasitic drag and protects against wear during break-in and high-RPM operation. Pin bores are CNC precision-machined for exact tolerances, and a forced pin oiler ensures consistent wrist pin lubrication under hard use.

• 4x Forged 4032 aluminum dome pistons — 330g advertised weight each
• 20mm high-quality steel wrist pins (84g each)
• Performance ring set: 1.0mm, 1.2mm, 2.8mm — steel nitrided top ring
• Race-proven round wire locks

Full Specifications:

• Bore: 82.01mm
• Compression Height: 31.2mm
• Stroke: 85.0mm
• Rod Length: 137.9mm
• Wrist Pin Diameter: 20mm
• Dome Volume: +4.3cc
• Piston Weight: 330g (advertised)
• Compression Ratio: 12.5:1 (with 38cc heads)
• Alloy: 4032 Forged Aluminum
• Compatible with: FRM aluminum bores

MAHLE Motorsport brings decades of OEM and race-proven engineering to this PowerPak-style piston set, making it a trusted choice for engine builders targeting high compression naturally aspirated performance builds on the Toyota 2ZZ-GE platform.