Overview 

The UEM Piston 1FZ 103/108mm Stroke Flat is a forged high-performance piston specifically designed for Toyota 1FZ-FE engines with a 108mm stroker crankshaft. With its 103mm bore and flat-top design, it maximizes compression efficiency, making it perfect for naturally aspirated or mildly boosted setups. The flat crown enhances flame travel and combustion quality, translating into better power output and throttle response. Crafted from premium forged materials, this piston is built to withstand extreme thermal and mechanical stress, making it ideal for off-road racing, motorsport, or any high-output street build where reliability and strength are essential.

Features

• Fits Toyota 1FZ-FE engines with 108mm stroker crankshafts

• 103mm bore size increases displacement and improves power potential

• Flat-top crown enhances compression and combustion efficiency

• Optimized for naturally aspirated and mildly boosted engines

• Made from high-strength forged materials for long-lasting durability

• Handles extreme temperatures and pressures in demanding environments

• Improves engine response, power delivery, and flame propagation