MMR / MANLEY Forged Pistons The Manley Built / MMR designed pistons have been used to produce over 2000HP - no other Modular piston manufacturer can claim this!!! MMR has used our 16 years of experience to design, refine and develop the baddest pistons available for your street to full race application.
2618 Material Fully Forged Thick Ringland for Boosted applications
Thick Chromoly steel pins (Std .866 Diameter)
Pressure balance groove
Full banded skirt for increased stability
Wire locks (the best and most secure pin retention clip)