Savage X 4.6 GT-6 1/8th 4WD Nitro Monster TruckThe smoke, the noise Nothing beats NITRO and that's why HPI is going all out with a new Savage X 4. 6 for our Internal Combustion fans! While our competitors play it safe with electric, we know that real trucks have engines! In addition to a raft of new features including 17mm Aluminum Hex Hubs, all hex hardware, NEW bumpers, body, wheels & tires, the Savage X 4. 6 GT 6 also includes: NEW Super HD Drivetrain NEW Shim behind Spur Gear to reduce wobble