For transmission to tires, the G-21A is the ultimate utility vehicle. It's bigger. It's better. It's tougher. The 357cc engine with 11.4 horsepower is larger than previous models. Which is necessary now that the G-21A Cargo box can carry up to 800 pounds. With the support of heavy-duty rear suspension, 6-ply tires and a redesgned seat, you'll get a smooth, comfortable ride out of a rugged vehicle. Plus, with low gear ratio, the G-21A transmission makes climbing hills easier. Meanwhile, heading back down the other side, you're still in control, thanks to front and rear mechanical brakes.

Yamaha G-21A Utility Vehicle Specifications
Weight:   851 lbs. (386 kg) dry
               895 lbs. (406 kg) fueled

Turning Radius:
per SAE J965:  
 10 feet, 8 inches (3.3 m)
Length:   120.0 in. (305 cm) Vehicle Load   1300 lbs. (590 kg) including operator
Capacity:          passenger, cargo and accessories.
Width:   Overall: 51.1 in. (130.7 cm)
             Seat: 28.1 in. (71.5 cm)
             Floor plate: 11.8 in. (30 cm)
             Cargo bed: 25 in. (63.5 cm)
Cargo Box
Load Capacity:
  800 lbs. (363 kg)
Ground Clearance:   4.5 in. (11.5 cm) Cargo Box Size:   Width: - inside: 48.5 in. (123.2 cm)
                             Length - inside: 48.5 in. (123.2 cm)
                             Depth - inside: 9.81 in. (24.9 cm)
                             Capacity - 0.5 cu. yd. (0.38 cu. m)
Wheel Base:   74.8 in. (190 cm)
Tread: Front:   38.6 in. (98 cm)
Rear:               38.6 in. (98 cm)
Standard Features
Engine: Yamaha overhead valve 357cc, single-cylinder 60 degree incline with 8:1 compression ratio, forced air cooling, Splash oil lubrication system, 1000cc/ 1 quart (1 liter) oil capacity and 11.4 horsepower at 3500 rpm. Fuel tank capacity of 6.3 gallons (24.0 liters) with consumption at 23.5 mpg (9.41 km/liter)
Torque Converter: Centrifugal, V-belt automatic tramsmission with lower gear ratio. Primary reduction ranges from 3.10 - 0.80, depending on load. Secondary reduction ratio 15.38:1, forward and reverse.
Ignition: Maintenance-free, transistor-magneto ignition.
Transaxle: Yamaha's exclusive forward/reverse transaxle is equipped with high-precision helical gears, 15.391:1 drive axle ratio, heavy-duty axle splines and dog clutch.
Brakes: Mechanical cable system with self-adjusting, individual drum-shoe brakes on all four wheels. Foot parking brake with automatic brake release.
Tires:  Front:
           Rear:
18 x 8.5 - 8 4-ply rating, sawtooth tread
18 x 8.5 - 8 6-ply rating, turf tread
Electrical System: 12-volt system, 35-ampere starter/generator, Group 24 battery, 420 C.C.A., charging output 14-15 volts/5000 rpm.
Speed: Travel-speed sensing, in transmission, governed at 12 mph (19km/h)
Air Cleaner: Three-stage: inertial primary, urethane-foam precleaner plus high-capacity paper filter cartridge.
Steering: Worm gear and pitman pin system, adjustable.
Suspension:   Front:
                      Rear:
Independent swingarm suspension, coil spring with shock absorber. Front center rubber bush pivoted trailing arm with link suspension.
Seating: Seats two. Redesigned seat backs for more room. Seamless, fabric-backed vinyl covers molded-foam cushionss. Plastic seat bottom.
Frame: Seamless tubular steel, robotic welded, protected with an electro-depostion epoxy-based coat paint process and baked with an electrostatically-applied polyester/urethane powder top coat.
Body: Custom-formulated thermoplastic olefin, painted with a two-part top coat of high-luster automotive-grade polyurethane.
Cargo Box: Tilting extruded, ribbed, aluminum bed and panels.