| Attribute | Value |
| General |
| Production from | 2016 year |
| Make | Yamaha |
| Model | Yamaha Grizzly 450 IRS |
| Category | ATV |
| Engine and transmission |
| Engine type | Single cylinder, four-stroke |
| Valves per cylinder | 2 |
| Fuel system | Carburettor. Mikuni BSR33/1 |
| Engine details | Gear-driven crankshaft balancer shaft and rubber-damper engine mounts |
| Displacement | 421 cm³ |
| Power | Add |
| Max RPM | Add |
| Fuel consumption | Add |
| Cooling system | Liquid |
| Transmission type,final drive | Shaft drive (cardan) |
| Torque | Add |
| Bore | 84.5 mm |
| Stroke | 75 mm |
| Gearbox | Automatic |
| Greenhouse gases | Add |
| Fuel control | Single Overhead Cams (SOHC) |
| Emission details | Add |
| Driveline | Ultramatic® V-Belt Transmission L/H/N/R/P. On-Command; 3-way locking differential; 2WD, 4WD, locked 4WD; shaft |
| Ignition | DC-CDI |
| Clutch | Add |
| Lubrication system | Add |
| Compression | 10.0:1 |
| Exhaust system | Add |
| Chassis |
| Front suspension | Independent double wishbone, 5 position preload adjustment |
| Rear suspension | Independent double wishbone, 5 position preload adjustment |
| Front brakes | Double disc. Hydraulic. |
| Rear brakes | Double disc. Sealed oil-bathed multi-disc |
| Diameter | Add |
| Frame type | Add |
| Front tyre | 25/8-12 |
| Rear tyre | 25/10-12 |
| Seat | Add |
| Wheels | Add |
| Front wheel travel | 160 mm |
| Rear wheel travel | 180 mm |
| Trail | Add |
| Rake (fork angle) | Add |
| Other |
| Battery capacity | Add |
| Starter | Electric |
| Color options | |
| Carrying capacity | Front and rear cargo racks. |
| Light | Dual 30W Krypton multireflector headlights and 21W/5W brakelight |
| Instruments | Digital LCD multifunction display: speedometer, odometer, dual tripmeter, hour meter, clock, gear position and fuel gauge |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,232 mm |
| Kerb weight | 281.2 kg |
| Dry weight | Add |
| Power/weight ratio | Add |
| Overall height | 1,120 mm |
| Overall length | 1,994 mm |
| Overall width | 1,092 mm |
| Seat height | 840 mm |
| Alternate seat height | Add |
| Ground clearance | 245 mm |
| Front percentage of weight | Add |
| Rear percentage of weight | Add |
| Performance |
| Top speed | Add |
| Acceleration 0-100 km/h | Add |
| Length | Add |
| Reserve fuel capacity | Add |
| Fuel capacity | 15.14 l |
| Oil capacity | 2.6 l |
| Width | Add |
| Height | Add |