Hpi Savage 21 Slow Mo

Difference between Savage 21 and Savage 25.
Savage 21.
The original, ready-to-run (RTR) Savage 21 served as the foundation for the many vehicles that came after. It featured a unique boxed chassis with parallel aluminum panels (known as Twin Vertical Plates, TVP) surrounding the transmission and drive axles, two-speed transmission, heavy-duty slipper clutch, eight oil-filled coilover shock absorbers, 4 inches of suspension travel, four-wheel drive, HPI .21ci (3.4 cc) pull-start engine with rear exhaust and an HPI 27 MHz three-channel pistol grip radio. A "reverse module," sold separately, mounts inside the transmission, where it replaces an idler gear assembly. It utilizes the factory-installed radio's non-proportional third channel and an additional servo to add the convenience and fun of reverse when the model is first brought to a complete stop.
• Pull start Engine
• Red Springs
• 0.21ci engine
• Black, purple and silver body theme
Savage 25.
The Savage 21 was replaced by the updated Savage 25. This version added both a larger HPI .25ci (4.1 cc) engine, the S-25, for additional power and torque as well as HPI's unique "Roto-Start" electric starter system. The Roto-Start kept the weight-saving advantages of the pull start with the extra added convenience of electric starting via an external electric starter. This starter, standard on most 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.[
• Roto start Engine
• Black Springs
• 0.25ci engine
• Red, gray and silver body theme