This is the 1/10 scale glow powered, radio controlled, 4 wheel drive HPI Nitro RS4 RTR 3 Evo on-road Ready-To-Run (95% assembled) car.
FEATURES: Chassis: 0.098" (2.5mm) thick 6065 aluminum, purple anodized, countersunk
Drive: Four wheel
Drive Type: Shaft
Engine: .15 cu in (2.4cc) HPI T-15 with ABC construction, dual needle 5.5mm rotary carburetor, glow plug and large heatsink head, engine starts by included electric Roto Start system
Exhaust: Dual chamber tuned pipe with header
Radio: AM 2-channel pistol grip with steering and throttle trims, servo reverse, and steering dual rate
Fuel Tank: 2.5oz (75cc) flip top cap
Clutch: 2-shoe
Transmission: Two-speed with adjustable shift point and changeable gear ratios
Ball Bearings: Rubber sealed type included (18 total)
Shocks: Four oil-filled with coil-over spring, composite bodied
Main Gears: 47 and 43 tooth, nylon construction
Gearbox: Sealed front and rear
Differentials: Planetary geared, limited slip front diff
Brakes: Single disk
Radio Tray: Sealed and removable
Tires: Treaded D compound high grip, premounted, 2.5" (65mm) outer diameter, 1.9" (49mm) inner diameter, 1" (25.5mm) wide
Wheels: Chrome finish 1-piece split 6 spoke, 1" (25.5mm) wide 2.2" (52mm) diameter with hex drive
Body: Pre-painted red Dodge Viper GTS R coupe with body trim decals applied
Bumper: Front foam

Camber Tie Rods: Non-adjustable
Steering Tie Rods: Non-adjustable
Steering: Bell-crank
Servo Saver: Included

INCLUDES: HPI Nitro RS4 3 Evo with Viper body, oil-filled shocks, .15 engine, Roto Start, tires, foam inserts, wheels, 2ch AM radio, wheel wrench 18 & 22 tooth clutch bell, 47 & 43 tooth spur gear, antenna tube, receiver box, air filter, glow plug, antenna tube, rear wing, and illustrated instruction manual
REQUIRES Radio Batteries: (12) AA size
Glow Starter: 1.2V
Roto Start System battery: 7.2V battery
Battery charger for the 7.2V battery
Misc. Items: Fuel bottle, building and track equipment
Fuel: 2-stroke glow fuel with 10%-15% nitromethane, 16% lubricant- Most of the fuels we carry meet or exceed the lubricant content required for optimum performance and maximum engine life. In the past, the conventional lubricant content used in fuel was 18%. But with new advanced technologies, fuels like Red Alert and O'Donnell for example, have a better quality of lubricants even though the percentages of lubricant content are lower. These high-tech lubricants provide exceptional cooling and protection.
SPECS: Vehicle-
Length: 17.25" (430mm)
Width: 8" (203mm)
Height: 4.8" (124mm)
Weight: 3.85lbs (1745g) approximate
Wheelbase: 10.1" (256mm) (wheels on-center front-to-rear)
Tread: Front-6.75" (171mm) Rear-7" (178mm) (wheels on-center side
to-side)
Front Track: 7.25" (184mm)
Rear Track: 7.75" (197mm)
Ground Clearance: 0.29" (7.5mm)
Body-
Length: 17.25" (430mm)
Width: 7.75" (197mm) at rear wheels (widest point)

Height: 4.5" (114mm)

COMMENTS: For Replacement Ball Bearings use:
Qty. Size Location Bearing Set Qty.
(2) 10 x 15mm spur gear shaft (use 1-DTXC1595)
(4) 5 x 11mm front & rear gearbox (use 2-DTXC1547)
(4) 10 x 15mm front & rear gearbox (use 2-DTXC1595)
(2) 5 x 11mm front wheel hubs (use 1-DTXC1547)
(2) 10 x 15mm front wheel hubs (use 1-DTXC1595)
(4) 5 x 11mm rear wheel hubs (use 2-DTXC1547)
(2) 5 x 10mm clutch bell (use 1-DTXC1535)

It is not possible to request a specific radio channel when ordering. They are supplied by the manufacturer at random.
Body pictured on the box is painted red with all decals applied.
A comparison of the RTR Nitro RS4 Evo to the original RTR RS4 3:
RTR Nitro RS4 3
RTR Nitro RS4 3 Evo
Engine: Nitro Star 15FE, single
Nitro Star T-15,
2 needle needle adjustment, ABC adjustment, ABC construction construction Exhaust: Cast aluminum
Tube aluminum header
Tuned Pipe: Composite dual chamber
Composite dual chamber
Starting System: Standard pullstarter
HPI Roto Start system
Transmission: Single speed
Adjustable 2sp transmission
Chassis: 2.5mm countersunk aluminum
2.5mm 6061 countersunk aluminum
Tires: D compound X-pattern
Preglued D compound X-pattern
unglued Wheels: Dark gray Split 6
Chrome plated Split 6
Body: Clear uncut polycarbonate
Prepainted, trimmed w/decals
applied