2005–2010 Jeep Grand Cherokee (WK1): HEMI Power, Street Attitude
The 2005–2010 Jeep Grand Cherokee WK1 was the beginning of Jeep’s high-performance SUV legacy. Whether you're driving the 5.7L HEMI-powered model or the legendary 6.1L SRT8, these machines deliver serious performance potential with a solid chassis, stout driveline, and the unmistakable sound of American V8 muscle.
The 5.7L HEMI WK1 is a strong, affordable entry point into Jeep performance—perfect for daily drivers, tow rigs, or sleepers in the making. With the right mods, these engines wake up fast and hold their own at the track or on the street. Step up to the 6.1L SRT8, and you get a factory-built AWD muscle SUV with aggressive gearing, Brembo brakes, and a deep well of untapped performance potential. Even by today’s standards, the 6.1L SRT8 hits hard—and with the right upgrades, it hits way harder.
At HHP Racing, we’ve been building, racing, and tuning WK1 Grand Cherokees since they launched. We offer everything from bolt-ons and cam kits to superchargers, forged engines, transmission upgrades, fuel systems, and custom tuning for both 5.7L and 6.1L platforms. Whether you’re looking for a street-driven sleeper or a full-blown track killer, we’ve got the parts and the knowledge to make your WK1 faster, stronger, and louder than ever.
This is where high-performance Jeep culture began—and we’re still here pushing the limits.
