HEMI Engine Program by MMX

Build more power with the Modern Muscle Xtreme Gen3 HEMI engine program. Shop Mopar HEMI crate engines, forged short blocks, long blocks, and high-horsepower stroker assemblies for 5.7, 6.1, 6.2 Hellcat, and 6.4 applications—plus Dart-based HEMI blocks for serious boost. From street restomods and naturally aspirated combos to Whipple supercharged, drag-ready HEMI builds, MMX delivers complete crate engines, build kits, CNC machining, and performance parts so you can spec a reliable, race-proven HEMI from mild to 1500+ HP.