2009 Jeep Wrangler JK 392 HEMI 8HP75 Transmission Conversion by MMX4x4 / Modern Muscle Xtreme

Like so many other 2007 - 2011 Gen1 Jeep Wrangler JK's, Dave's Jeep was in fantastic condition and just begging for a new drive train to grace the almost pristine chassis and frame. So many of these older Wrangler JKs are in fantastic condition and absolutely deserving of proper HEMI upgrade and more...read more...

2010 Jeep Wrangler JK 5.7L HEMI Conversion by MMX4x4 / Modern Muscle Xtreme

Now this is a rare bird... To say there aren't many 392 HEMI powered Gladiators in existence is somewhat of an understatement. Cristian brought us his daily driver 3.6L v6 powered Gladiator because he was ready for some real HEMI v8 power. Power that he was all too familiar with because he also owns a supercharged HEMI endowed Dodge Challenger...read more...

2010 Jeep Wrangler JK 5.7L HEMI Conversion by MMX4x4 / Modern Muscle Xtreme

Decisions, decisions... So your 2010 Jeep Wrangler JKU Rubicon is now 12 years old and the 3.8L v6 with 190,000 miles on it has seen its better days (We dont think this engine ever had good days to begin with) and its time for you to starting thinking about replacing it or buying a new Jeep. The problem is that your Jeep is fully built including suspension, axles, steel bumpers, winch, etc. and in fantastic condition. This is why the HEMI conversion for the Gen1 JK is so popular...read more...

2018 Jeep Wrangler JL Edelbrock Supercharged 3.6L v6 by MMX4x4 / Modern Muscle Xtreme

Whats the next best thing to swapping a HEMI into your Jeep Wrangler for added horsepower? SUPERCHARGING... Thats right, supercharging your 3.6L v6 pentastar can produce some crazy horsepower numbers rivaling the 5.7L HEMI v8. Some kits can raise the rear wheel horsepower upwards of 360RWHP! The 3.6L v6 is a time tested power plant more than capable of handling some forced induction which means you can have that v8 power for a third of the cost...read more...

2007 Jeep Wrangler JK 5.7L HEMI Conversion by MMX4x4 / Modern Muscle Xtreme

A new lease on life... Tim towed his 2007 JK with a 3.8L v6 with a manual transmission that had a bad clutch in it here from Northern VA. With the goal of putting a HEMI v8 and a automatic transmission in it, Tim brought his Jeep to us in order execute his plans. We are a HEMI specialist shop in South West, Virginia with over 30 years of HEMI experience. While we spend a lot of time building high horse power HEMI monsters...read more...

2018 Jeep Wrangler JL 3.6L v6 Performance Mods by MMX4x4 / Modern Muscle Xtreme

The 3.6L V6 Pentastar engines in these Jeeps have proven to be a fantastic engine for this platform. That being said, when it comes time to lift your Jeep and throw some 35", 37", or even some 40" tires you will notice a hit on the performance of the engine due to the extra weight of the new shoes! At this point you can take a few different routes to help your engine keep up with the additional load... You could re-gear your front and rear differential (EXPENSIVE), throw on some...read more...

2015 Jeep Wrangler JK 6.4L Big Gas HEMI Build and Edelbrock Supercharged by MMX4x4 / Modern Muscle Xtreme

ALL THINGS HEMI... Even if someone wants us to put a HEMI in a vehicle that doesn't come with one from the factory! William brought us his 2015 Jeep Wrangler JK with the standard 3.6L V6 Pentastar engine in it with the idea that he wanted a supercharged HEMI put in its place. Doing a HEMI swap on a Jeep Wrangler isn't a new concept by any stretch, but throwing in a Big Gas 6.4L HEMI with the idea of putting an Edelbrock Supercharger on it, well thats definitely some uncharted territory... read more...

2008 Jeep SRT Procharger D1-X Supercharged Build by MMX4x4 / Modern Muscle Xtreme for AZN of Street Outlaws!

Modern Muscle Performance / ModernMuscleXtreme.com owner Dave and Stephen the GM were manning our booth during PRI 2016 when AZN happened to be wondering by and saw our “Grouch” Jeep SRT8 build. He immediately stopped and began to look over the build quality and talk to Stephen and Dave about what went into the project.After some discussion AZN made it known... read more...