Manley 590040R-1 Manley Platinum Series Pistons | Atech Motorsports Valves while the corrosion-resistant terminal towers

while the corrosion-resistant terminal towers accept standard marine-grade spark plug wire boots

typically shifting the torque curve lower in the RPM range for improved low-end and mid-range power

no cutting

Part 66626 is configured for its specific application with attention to fitment requirements

4°F to 297

Manley 590040R-1 Manley Platinum Series Pistons | Atech Motorsports Valves while the corrosion-resistant terminal towersThe Manley 590040R 1 Manley Platinum Series Pistons Atech Motorsports are premium forged pistons designed for engine builders who refuse to compromise. As the component that transfers combustion pressure directly to the connecting rod, piston selection is critical for power, reliability, and longevity. These pistons are ideal for high performance street, strip, and circle track applications where consistent ring seal and thermal stability matter most.