new HPI RTR models, incorporates a gear-driven one-way bearing mounted on the engine in lieu of the pull starter. The external starter is a motor-driven gearbox which spins a hexagonal steel shaft and is powered by a standard 7.2-volt nickel cadmium battery pack. A pinned ball joint at the end of the shaft mates with a socket on the rear of the engine-mounted one-way bearing assembly. The system has proven to be a popular one, with third-party engine manufacturers such as O.S. Engines and Team Orion designing their replacement engines to accept the assembly. A limited edition version of the Savage 25 added a three-speed transmission along with updated wheels and tires. These parts can easily be retrofitted to previous versions. Savage ATV A mechanically identical (save for springs) variation of the Savage 25 replaces that model's Lexan pickup truck body with that of a Kawasaki KFX700 all-terrain vehicle (ATV) with articulated rider figure designed to move with the model's steering motions. Savage 4.6 SS When the Savage 25 was released, the Savage 4.6 SS kit was updated to include the more powerful engine, improved differentials and other upgrades. A ready-to-run version, the Savage 25 Limited Edition, added colored shock absorber springs, a 3-speed transmission, and a commemorative bodyshell to differentiate it from the kit version. E-Savage An electric version, dubbed E-Savage, is a 1/10 scale version similar in design to the original. It is powered by two HPI "GT550" 14.4v electric motors and competes in the market defined by models such as the Traxxas E-Maxx and Kyosho Twin Force. It shares no parts at all with the full size Savage because it is simply a rebadged Hot Bodies E-Zilla. There is also an E-Savage Sport. The only difference between the E-Savage and the E-Savage Sport is that the Sport does not include the battery packs and charger. Savage X The next ready-to-run version was the Savage X. It had a new Force Engine-built 25 motor. The Savage X has addressed the criticisms of the original twin chassis design, which were poor radio box access and difficult access to the differentials. The enlarged radio box is now easier to open and the differentials can now be removed from the new "split bulkhead" design by removing only 6 screws. The new chassis plates lower the motor and transmission slightly to improve GC, and it now includes a standard composite roll bar