| Engine Type | 449cc liquid-cooled DOHC 4-stroke; 5 titanium valves |
| Bore x Stroke | 95.0mm x 63.4mm |
| Compression Ratio | 11.8:1 |
| Fuel Delivery | Yamaha Fuel Injection (YFI), 42mm |
| Transmission | 5-speed; wet multiplate assist-and-slipper clutch |
| Final Drive | O-ring chain |
| Fuel Capacity | 2.6 gal |
| Suspension / Front | Independent double wishbone w/Kashima coated piggyback shocks; high/low speed compression, rebound and threaded preload adjustment, 9.8-in travel |
| Suspension / Rear | Cast aluminum swingarm w/piggyback shock; high/low speed compression, rebound and threaded preload adjustment, 11.0-in travel |
| Brakes | Front: Dual hydraulic disc; Rear: Wave-style hydraulic disc |
| Tires - Front & Rear | AT21 x 7-10 Maxxis® & AT20 x 10-9 Maxxis® |
| Dimensions | LxBxH: 70.7 in x 48.8 in x 41.9 in |
| Seat Height | 31.9 in |
| Wheelbase | 50.0 in |
| Fuel Capacity | 2.6 gal |
| Wet Weight | 405 lbs |
| Engine Type | 686cc liquid-cooled SOHC 4-stroke; 4 valves |
| Bore x Stroke | 102.0mm x 84.0mm |
| Compression Ratio | 10.0:1 |
| Fuel Delivery | Yamaha Fuel Injection (YFI), 44mm |
| Transmission | 5-speed w/reverse; wet multiplate clutch |
| Final Drive | X-ring chain; 2WD |
| Ignition | TCI: Transistor Controlled Ignition |
| Fuel Capacity | 2.9 gal |
| Suspension / Front | Independent double wishbone w/piggyback high/low-speed compression, rebound and threaded preload adjustment, 9.1-in travel |
| Suspension / Rear | Cast aluminum swingarm w/piggyback high/low-speed compression, rebound and threaded preload adjustment, 10.1-in travel |
| Brakes | Front: Dual hydraulic disc; Rear: Hydraulic disc |
| Tires - Front & Rear | AT22 x 7-10 Maxxis® & AT20 x 10-9 Maxxis® |
| Dimensions | LxBxH: 72.6 in x 45.5 in x 43.9 in |
| Seat Height | 32.7 in |
| Wheelbase | 50.4 in |
| Max.Ground Clearance | 9.5 in |
| Fuel Capacity | 2.9 gal |
| Wet Weight | 422 lbs |
| Engine Type | 686cc liquid-cooled SOHC 4-stroke; 4 valves |
| Bore x Stroke | 102.0mm x 84.0mm |
| Compression Ratio | 10.0:1 |
| Fuel Delivery | Yamaha Fuel Injection (YFI), 44mm |
| Transmission | 5-speed w/reverse; wet multiplate clutch |
| Final Drive | X-ring chain; 2WD |
| Suspension / Front | Independent double wishbone w/piggyback high/low-speed compression, rebound and threaded preload adjustment, 9.1-in travel |
| Suspension / Rear | Cast aluminum swingarm w/piggyback high/low-speed compression, rebound and threaded preload adjustment, 10.1-in travel |
| Brakes | Front: Dual hydraulic disc; Rear: Hydraulic disc |
| Tires - Front & Rear | AT22 x 7-10 Maxxis® & AT20 x 10-9 Maxxis® |
| Dimensions | LxBxH: 72.6 in x 45.5 in x 43.9 in |
| Seat Height | 32.7 in |
| Wheelbase | 50.4 in |
| Max.Ground Clearance | 9.5 in |
| Fuel Capacity | 2.9 gal |
| Wet Weight | 422 lbs |
| Engine Type | 112cc air-cooled SOHC 4-stroke; 2 valves |
| Bore x Stroke | 52.4mm x 51.8mm |
| Compression Ratio | 9.2:1 |
| Fuel Delivery | Yamaha Fuel Injection (YFI), 22mm |
| Transmission | CVT; F, N, R |
| Final Drive | Chain |
| Fuel Capacity | 1.8 gal |
| Suspension / Front | Single A-arm; 5.0-in travel |
| Suspension / Rear | Monoshock swingarm; 5.7-in travel |
| Brakes | Front: Dual drum; Rear: Drum |
| Tires - Front & Rear | AT18 x 7-8 AT18 x 9-8 |
| Dimensions | LxBxH: 58.5 in x 40.2 in x 39.0 in |
| Seat Height | 29.5 in |
| Wheelbase | 40.6 in |
| Fuel Capacity | 1.8 gal |
| Wet Weight | 287.5 lb |
| Engine Type | 90cc air-cooled SOHC 4-stroke; 2 valves |
| Bore x Stroke | 47.0mm x 51.8mm |
| Compression Ratio | 9.2:1 |
| Fuel Delivery | Carburetor |
| Transmission | CVT; F, N, R |
| Final Drive | Chain |
| Suspension / Front | Single A-arm; 5.0-in travel |
| Suspension / Rear | Monoshock swingarm; 5.7-in travel |
| Brakes | Front: Dual drum; Rear: Drum |
| Tires - Front & Rear | AT18 x 7-8 & AT18 x 9-8 |
| Dimensions | LxBxH: 58.5 in x 40.2 in x 37.6 in |
| Seat Height | 29.5 in |
| Wheelbase | 40.6 in |
| Fuel Capacity | 1.7 gal |
| Wet Weight | 279 lbs |
| Engine Type | 421cc liquid-cooled SOHC 4-stroke; 2 valves |
| Bore x Stroke | 84.5mm x 75.0mm |
| Compression Ratio | 10.0:1 |
| Fuel Delivery | Yamaha Fuel Injection (YFI), 34mm |
| Transmission | Ultramatic V-belt with all-wheel engine braking; H, L, N, R, P |
| Final Drive | Chain |
| Suspension / Front | Independent double wishbone; 6.7-in travel |
| Suspension / Rear | Independent double wishbone; 7.4-in travel |
| Brakes | Front: Dual hydraulic disc; Rear: Multi-disk wet brake |
| Tires - Front & Rear | AT25 x 8-12 & AT25 x 10-12 |
| Dimensions | LxBxH: 80.4 in x 46.5 in x 47.0 in |
| Seat Height | 33.7 in |
| Wheelbase | 48.8 in |
| Fuel Capacity | 3.7 gal |
| Wet Weight | 680 lbs |
| Engine Type | 421cc liquid-cooled SOHC 4-stroke; 2 valves |
| Bore x Stroke | 84.5mm x 75.0mm |
| Compression Ratio | 10.0:1 |
| Fuel Delivery | Yamaha Fuel Injection (YFI), 34mm |
| Transmission | Ultramatic V-belt with all-wheel engine braking; H, L, N, R, P |
| Final Drive | Chain |
| Suspension / Front | Independent double wishbone; 6.7-in travel |
| Suspension / Rear | Independent double wishbone; 7.4-in travel |
| Brakes | Front: Dual hydraulic disc; Rear: Multi-disk wet brake |
| Tires - Front & Rear | AT25 x 8-12 & AT25 x 10-12 |
| Dimensions | LxBxH: 80.4 in x 46.5 in x 47.0 in |
| Seat Height | 33.7 in |
| Wheelbase | 48.8 in |
| Fuel Capacity | 3.7 gal |
| Wet Weight | 650 lbs |
