Yamaha Golf Car G28A UMAX Medium Duty II
The Yamaha Golf Car G28A UMAX Medium Duty II is a golf cart with a stated top speed of 24 km/h (15 mph).
Last updated: 29 September 2026
Motor and performance
- Minimum turning radius
- 4.3 m (169.3 in)
- Top speed
- 24 km/h (15 mph)
“Minimum turning radius 3.0 m (118.1 in) (G27A) 4.3 m (169.3 in) (G28A)”
Source: golfcars.yamaha-owners-manuals.com/om/LIT-19626-01-08.pdf
“Maximum speed 24 km/h (15 mph)”
Source: golfcars.yamaha-owners-manuals.com/om/LIT-19626-01-08.pdf
Battery and charging
- Starter battery (gas models)
- BCI group 24 (52 AH, 20 hr rate)
“Battery: BCI group 24 (52 AH, 20 hr rate) RC: minimum 75 min CCA: minimum 400A”
Source: golfcars.yamaha-owners-manuals.com/om/LIT-19626-01-08.pdf
Size and fit
- Ground clearance
- 143 mm (5.6 in)
- Bed capacity
- 227 kg (500 lb)
- Overall length
- 3011 mm (118.5 in)
- Tyre size fitted
- 22 x 11-10 / 6 PLY
- Seating capacity
- 2 persons
- Overall width
- 1289 mm (50.7 in)
- Dry weight, without batteries
- 442 kg (974 lb)
“Ground clearance 116 mm (4.6 in) (G27A) 143 mm (5.6 in) (G28A)”
Source: golfcars.yamaha-owners-manuals.com/om/LIT-19626-01-08.pdf
“Maximum cargo bed load: 113 kg (250 lb) (G27A) 227 kg (500 lb) (G28A)”
Source: golfcars.yamaha-owners-manuals.com/om/LIT-19626-01-08.pdf
“Overall length 2492 mm (98.1 in) (G27A) 3011 mm (118.5 in) (G28A)”
Source: golfcars.yamaha-owners-manuals.com/om/LIT-19626-01-08.pdf
“20 x 10-8 / 4 PLY (G27A) 22 x 11-10 / 6 PLY (G28A)”
Source: golfcars.yamaha-owners-manuals.com/om/LIT-19626-01-08.pdf
“Seating capacity 2 persons”
Source: golfcars.yamaha-owners-manuals.com/om/LIT-19626-01-08.pdf
“Overall width 1232 mm (48.5 in) (G27A) 1289 mm (50.7 in) (G28A)”
Source: golfcars.yamaha-owners-manuals.com/om/LIT-19626-01-08.pdf
“Dry weight (without battery) 329 kg (725 lb) (G27A) 442 kg (974 lb) (G28A)”
Source: golfcars.yamaha-owners-manuals.com/om/LIT-19626-01-08.pdf
Brakes and safety
- Brakes
- Mechanical drum brake on front and rear wheels with self-adjusters
“Mechanical drum brake on front and rear wheels with self-adjusters (G28A)”
Source: golfcars.yamaha-owners-manuals.com/om/LIT-19626-01-08.pdf
Frame and components
- Steering
- Worm and pin
“Rack and pinion (G27A) Worm and pin (G28A)”
Source: golfcars.yamaha-owners-manuals.com/om/LIT-19626-01-08.pdf
Other findings
- Engine displacement
- 357 cm3
“Cylinder arrangement Forward-inclined single cylinder Displacement 357 cm3”
Source: golfcars.yamaha-owners-manuals.com/om/LIT-19626-01-08.pdf
Sources
- Archived document
Source: golfcars.yamaha-owners-manuals.com/om/LIT-19626-01-08.pdf
Retrieved September 28, 2026