MMR M4000R Racing Pistons for 4.6, 5.4, 5.8 & 5.0 Coyote

MMR M4000R Racing Pistons The ultimate Modular piston has arrived! The MMR M2500R pistons are the only production piston track and dyno proven to handle up to 3000 RWHP in a modular application. No other Modular piston manufacturer can claim this or back it up! Over 5 years of research and development with MMR and Manley engineers along with testing by our MMR Pro-Mod, Outlaw and Extreme Drag Radial team bring you the finest piston ever for your 4.6 or 5.4 or 2011-2021 5.0 Modular application. * Designed for Street and Race use * Proven and tested by team MMR up to 4000RWHP!!! * E85 Compatible * MMR RED FIRE Dome Coating * Full Banded Skirt for increased Piston Stability * 1000hp Chrommoly Piston Pin comes std. (upgrades offered below) * Thickest Ring lands in the industry while still maintaining low emissions. * Anti detonation groove standard * 5.4/5.8 Specific design available with ZERO deck. * Longest lasting and quietest pistons available. * All compression ratios and bore sizes (have a custom need - call us)

  • Model: M4000RCSTM


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