Cat-Back Single Exhaust System, Stainless (Single) Defender MAX HD10 XT The unique M21 Lok wheel

The unique M21 Lok wheel design sheds weight

This is especially true for portal gears

High quality CNC machined with precision drilled grease channel

Installs conveniently on inside of door

Gibson gives you a powerful Exhaust System that screams performance

Cat-Back Single Exhaust System, Stainless (Single) Defender MAX HD10 XT The unique M21 Lok wheelGibson Single Side Exhaust is perfect for improved acceleration, maximum hill climbing, towing and passing power. This is our best performing Exhaust System. Exits behind the rear tire. Quieter in the cab than any other Performance Exhaust. Dyno test results show it makes maximum torque and horsepower at low end (1800 to 3000 RPM). Horsepower gains average 10 15 and 15 20lb ft of increase torque. Hassle free, bolt on installation with professional