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2021 Yamaha YFZ450R

  • 2021 Yamaha YFZ450R
  • 2021 Yamaha YFZ450R
  • 2021 Yamaha YFZ450R
  • 2021 Yamaha YFZ450R
  • 2021 Yamaha YFZ450R
  • 2021 Yamaha YFZ450R
  • 2021 Yamaha YFZ450R
  • 2021 Yamaha YFZ450R
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Overview
Boasting ultimate race-bred technology, the YFZ450R has earned the reputation of seeing the checkers before any of its competitors. The YFZ450R continues this legacy by offering unmatched power delivery and rider exhilaration, leaving the opposition running back to the drawing boards.
Specifications
Model
YFZ450R
Category Name
ATVs
Year
2021
Manufacturer
Yamaha
Color
Team Yamaha Blue
Width
1,240 mm (48.8")
Engine
Liquid cooled, DOHC, 5-valve (titanium), single
Height
1,065 mm (41.9")
Length
1,795 mm (70.7")
Ignition
TCI: Transistor Controlled Ignition
Starting
Electric
Wheelbase
1,270 mm (50.0")
Wet Weight
184 kg (405 lb)
Final Drive
O-ring chain
Lubrication
Dry sump
Displacement
449cc
Transmission
5-speed; wet multiplate assist-and-slipper clutch
Bore & Stroke
95mm x 63.4mm
Fuel Capacity
10 L
Compression Ratio
11.8: 1
highlights

2019 Raptor 90 BlueWhite terrianability Highlight Image

Race-Ready Engine

The YFZ450R is the most technologically advanced sport ATV on the market today. It combines a high-tech, quick-revving, titanium-valved, 449cc fuel-injected engine with a lightweight, professional-caliber cast aluminum/steel chassis. The power and chassis combination makes for a championship-winning machine time and time again.

2019 Raptor 90 BlueWhite terrianability Highlight ImageHigh-Performance Shocks

The front KYB® shocks are longer for increased stroke, superb bump absorption and excellent anti-bottoming characteristics. The Kashima™ coating offers smooth operation while the 9.8 inches of wheel travel means the racer is ready for the most challenging tracks.

2019 Raptor 90 BlueWhite terrianability Highlight ImageAggressive Bodywork

With more room to hang off in the corners, the bodywork is designed for great ergonomics and rider comfort. The seat shape is padded in just the right places to improve lap times while the body panels come off easily without tools for service, so there’s no need to remove the battery or other components to take the fenders off.
features and benefits

Key Features

  • Race-Ready Engine
  • Fuel Injection
  • Assist and Slipper Clutch
  • Race-Ready Ergonomics
  • Adjustable Handlebar
  • High-Performance Shocks
  •  

ENGINE

  • Powerful Engine
    • The YFZ450R is the most technologically advanced sport ATV on the market today. It combines a high-tech, quick-revving, titanium-valved, 449cc fuel-injected engine with a lightweight, professional-caliber cast aluminum/steel chassis. The power and chassis combination makes for a championship-winning machine time and time again.
  • Advanced Cylinder Head
    • The 449cc engine uses a five-valve cylinder head and titanium valve technology to deliver abundant power in the mid-range to top end with more “hit” feeling right off idle. The high compression ratio further improves overall engine performance.
  • Fuel Injection
    • The YFZ450R incorporates Yamaha Fuel Injection (YFI) for precise fuel delivery. With a big 42mm Mikuni® throttle body and 12-hole injector, this system provides exceptional atomization of the fuel for maximum power. The system also includes ISC (Idle Speed Control) for easy, reliable start-up and warming.
  • Assist and Slipper Clutch
    • An assist-and-slipper clutch reduces clutch lever effort for less fatigue while at the same time increasing clutch plate pressure for positive engagement. This clutch system also reduces engine braking effect for faster cornering, particularly when downshifting.
  • Compact Counterbalanced Engine
    • The crankcase holds a crankshaft that’s ready to handle the increased demands of the racer as well as the counterbalancer to reduce vibration. The crankcase also houses the oil tank which helps to centralize mass for unmatched handling while making maintenance easier.
  • Tuned Camshafts
    • Camshafts have been revised to maximize the engine’s impressive power output from off the line all the way up to the top end.

 

CHASSIS/SUSPENSION

  • Race-Ready Ergonomics
    • The body configuration allows more room for the racer to move around during the moto. To reduce fatigue, the seat is narrow in the front yet wide and padded in the rear.
  • Durable, Rigid Wheels
    • The wheels have been designed with the inner lip rolled in to increase rigidity, allowing for a reduction in weight while maintaining strength.
  • Wide Track and Maxxis® Tires
    • Wheels are set motocross-spec wide, near the allowable maximum of 50 inches, for great cornering speed. Maxxis® tires provide excellent handling and control. At 20 inches in the rear and 21 inches in the front, they provide better ground clearance than the competition.
  • Adjustable Handlebar
    • With a large diameter, the tapered handlebar reduces vibration and is mounted on 4-way clamps for exceptional adjustability. The two sets of holes in the handlebar crown and the eccentric clamps allow the rider to choose the standard setting: 10mm forward, 20mm forward or 10mm backward.
  • Wide Foot Pegs
    • The generous 2.6 inch-wide foot pegs are something riders will appreciate every time they want to get up on the pegs.
  • Advanced Frame
    • The lightweight frame is a combination of aluminum and steel. The frame member under the engine is steel and is used for its strength and low profile so that the engine can sit lower overall for excellent mass centralization and unmatched handling. The aluminum frame is bolted together, rather than welded, for maximum durability.
  • Long A-Arm Suspension
    • The front frame is as narrow as possible at the A-arm mounting points. This increases the A-arm length and reduces changes in camber as the suspension travels through its full range of motion.
  • High-Performance Shocks
    • The front KYB® shocks are longer for increased stroke, superb bump absorption and excellent anti-bottoming characteristics. The Kashima™ coating offers smooth operation while the 9.8 inches of wheel travel means the racer is ready for the most challenging tracks.
  • Swingarm Rear Suspension
    • The rear swingarm is crafted of strong, gravity-fed aluminum and is matched to a fully adjustable 46mm KYB® piggyback shock for excellent handling. For comfort even on tough terrain, the rear wheel offers 11.0 inches of travel. 

ADDITIONAL FEATURES

  • Light Throttle Action
    • The throttle lever requires low effort for less fatigue during long motos. 
  • Compact LED Indicators
    • The discreet panel on the fender in front of the rider gives vital indicators about low fuel, coolant temperature, check engine and neutral gear via an LED display.
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