MMX Modern Muscle Xtreme — Gen3 HEMI performance and innovation

About MMX / Modern Muscle Xtreme

Modern Muscle Xtreme (MMX) is a Gen3 HEMI performance specialist — built for Challenger, Charger, RAM, Jeep, Hellcat, and HEMI-powered hot rod owners who want parts that actually work, not catalog filler.

Founded in 2006 as Modern Muscle Performance, we’ve spent two decades focused on the Gen3 HEMI platform: forged internals, high-performance camshaft kits, stroker combinations, MDS solutions, and plug-and-play electronics we design and stand behind. Today we operate as ModernMuscleXtreme.com / MMX — same mission, sharper focus, more innovation.

If you want a one-stop shop for serious HEMI performance, you’re in the right place.

What We Do Differently

Gen3 HEMI focus — 5.7, 6.1, 6.4, and 6.2 Hellcat platforms, not a little of everything for every car ever made.
MMX-designed products — camshaft kits, 2-step launch controllers, Hellcat boost controllers, intake swap kits, MDS delete solutions, and more.
Real-world testing — parts developed and validated with dyno, street, and race experience, not guesswork from a spreadsheet.

Build-ready systems — from drop-in cams and forged piston/rod combos to fuel systems and supporting bolt-ons.
Technical help that matches the parts — fitment questions, install guidance, and honest recommendations for your goals and budget.
Inventory + expertise — a deep HEMI catalog backed by people who live in this platform every day.

Our Story

MMX started with a clear target: bring better forged pistons, rods, and performance internals to the Gen3 HEMI market when quality options were harder to find. That foundation never changed — it expanded.

As the platform grew, so did the demand for complete solutions: camshaft packages that make power without drama, MDS strategies that address real lifter failures, electronics that are plug-and-play, and supporting parts that turn a single upgrade into a reliable combination.

Two decades later, we’re still doing what we set out to do — push Gen3 HEMI performance forward with parts and tech we trust on our own builds.

What HEMI Owners Shop Us For

Talk to the Shop

Not sure whether you need a no-tune cam, a full MDS delete, an intake swap, or a bottom-end upgrade first? Call us. We’ll help you build the right combination for your car, your power goals, and your budget — without selling you parts you don’t need.

Call: 276-666-1934
Tech & guides: HEMI Tech Section
Project help: Request a Build Quote
Contact: Contact MMX

Your HEMI-powered hot rod deserves parts chosen by people who know the platform.