Manley 590040R-1 Manley Platinum Series Pistons | Atech Motorsports Valves The 409 stainless body provides

The 409 stainless body provides an excellent balance of cost and long-term durability in all climates

Direct bolt-in installation using factory spring perches and isolators

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

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

This reduces cold-start emissions

Manley 590040R-1 Manley Platinum Series Pistons | Atech Motorsports Valves The 409 stainless body providesThe 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.