It is the unrivaled, race-ready sport ATV for people who want to win, with podium-winning DNA and a strong racing background. The review of the 2021 Yamaha YFZ450R Sports Quad Bike with its price and specification is written below.
2021 Yamaha YFZ450R Sports Quad Bike – Features and Price
Top Features
The Yamaha YFZ450R is the most technologically sophisticated sport ATV currently available. It blends a lightweight, professional-caliber cast aluminum/steel chassis with a high-tech, quick-revving, titanium-valved 449cc fuel-injected engine. The power and chassis combination consistently produces championship-winning machines. The 2021 Yamaha YFZ450R Sports Quad Bike is ready for motocross. The weldless frame is lightweight aluminum and has a tension-steel bottom structure that allows the engine to sit lower for better mass distribution. Suspension components and settings are lightweight and provide light, crisp handling while keeping the rider comfortable.
The bodywork is intended for excellent ergonomics and rider comfort, with great space to hang off in the bends. The seat is cushioned in the appropriate areas to enhance lap times, and the body panels come off quickly without tools for servicing, so the fenders may be removed without having to remove the battery or other components. The 449cc engine has titanium five-valve cylinder heads that provide plenty of power from the mid-range to the high end, with a more significant “hit” straight from the start. The more excellent compression ratio increases the overall performance of the engine.
Yamaha Fuel Injection (YFI) is used on the 2021 Yamaha YFZ450R Sports Quad Bike to deliver accurate fuel. This system offers excellent fuel atomization for optimum power, thanks to a large 42mm Mikuni® throttle body and a 12-hole injector. ISC (Idle Speed Control) comes with a simple, dependable start-up and warming. An assist-and-slipper clutch lowers clutch lever effort and increases clutch plate pressure for positive engagement, reducing strain. This clutch arrangement also minimizes engine braking, allowing for quicker handling, especially while downshifting.
Engine
The 449cc fuel-injected engine has exceptional power characteristics. Off the line, the power output is smooth and powerful, with plenty of middle and top-end punch. The 449cc engine has a five-valve cylinder head and titanium valve technology to provide plenty of power from the mid-range to the high end, as well as a more excellent “hit” straight off the start. The high compression ratio boosts the engine’s overall performance.
Yamaha Fuel Injection (YFI) is used on the 2021 Yamaha YFZ450R Sports Quad Bike to deliver accurate fuel. This system offers excellent atomization of the energy for optimum power, thanks to a large 42mm Mikuni® throttle body and a 12-hole injector. ISC (Idle Speed Control) is also comprised of simple, dependable start-up and warming. An assist-and-slipper clutch lowers clutch lever effort and increases clutch plate pressure for positive engagement, reducing strain. This clutch arrangement also minimizes engine braking, allowing for quicker handling, especially while downshifting.
The crankcase houses a crankshaft that’s equipped to manage the racer’s greater demands, as well as a vibration-reducing counterbalance. The oil tank is likewise housed in the crankcase, which helps to concentrate mass for superior handling and more straightforward maintenance. Camshafts have been redesigned to optimize the engine’s remarkable power output from start to finish.
Chassis/Suspension
The racer has ideal space to maneuver about throughout the moto because of the body shape. The seat is small in the front but broad and cushioned in the back to minimize fatigue.
The inner lip of the wheels has been rolled in to improve stiffness, allowing for weight savings while retaining strength. For high turning speed, the wheels are set motocross-spec wide, approaching the legal limit of 50 inches. Maxxis® tires are known for their superior handling and control. They have more ground clearance than the competitors, with 20 inches in the back and 21 inches in the front.
The tapered handlebar is placed on 4-way clamps for excellent flexibility and wide diameter to minimize vibration. The eccentric clamps and two sets of holes in the handlebar crown enable the rider to choose the usual setting: 10mm forward, 20mm forward, or 10mm backward. Riders will enjoy the large 2.6-inch-wide footpegs every time they wish to climb up on the pegs.
Aluminum and steel combine to form the frame’s low weight. Steel is chosen for the engine’s frame member because of its strength and low profile, allowing it to sit lower overall for better mass centralization and handling. For optimum durability, the aluminum frame is bolted together rather than welded. At the A-arm attachment locations, the front edge is as thin as feasible. As the suspension travels through its whole range of motion, this lengthens the A-arm and minimizes camber changes.
The front KYB® shocks provide a longer stroke, better bump absorption, and outstanding anti-bottoming properties. The KashimaTM coating ensures smooth operation, and the racer’s 9.8 inches of wheel travel means it’s ready for even the most challenging courses. For superb handling, the rear swingarm is made of robust, gravity-fed aluminum and paired to a fully adjustable 46mm KYB® piggyback shock. The rear wheel has 11.0 inches of travel for comfort even on rough terrain.
Additional Features
Low effort is required to use the throttle lever, resulting in reduced tiredness over long motos. An LED display on the fender in front of the rider displays critical information such as low gasoline, coolant temperature, check engine, and neutral gear.
2021 Yamaha YFZ450R Sports Quad Bike – Price
The new 2021 Yamaha YFZ450R Sports Quad Bike is available at $9,499 in the Team Yamaha Blue Color option.
2021 Yamaha YFZ450R Sports Quad Bike – Technical Specifications
Engine
| Engine Type | 449cc, liquid-cooled, DOHC, 4-stroke, five titanium valves |
| Bore x Stroke | 95mm x 63.4mm |
| Compression Ratio | 11.8:1 |
| Fuel Delivery | Yamaha Fuel Injection (YFI), 42mm |
| Ignition | TCI: Transistor Controlled Ignition |
| Transmission | 5-speed; wet multi-plate assist-and-slipper clutch |
| Final Drive | O-ring chain |
Chassis
| Suspension / Front | Independent double-wishbone w/Kashima coated piggyback shocks; high/low-speed compression, rebound and threaded preload adjustment, 9.8 inches travel |
| Suspension / Rear | Cast aluminum swingarm with piggyback shock; high/low-speed compression, rebound, and threaded preload adjustment, 11 inches travel |
| Brakes / Front | Dual hydraulic disc |
| Brakes / Rear | Wave-style hydraulic disc |
| Tires / Front | AT21 x 7-10 Maxxis® |
| Tires / Rear | AT20 x 10-9 Maxxis® |
Dimensions
| L x W x H | 70.7 inches x 48.8 inches x 41.9 inches |
| Seat Height | 31.9 inches |
| Wheelbase | 50 inches |
| Maximum Ground Clearance | 9.3 inches |
| Fuel Capacity | 2.6 gal |
| Wet Weight | 405 lb |
Other
| Warranty | 6 Month (Limited Factory Warranty) |
Conclusion
The new 2021 Yamaha YFZ450R Sports Quad Bike is one of the best and most powerful motorcycles known for its high-performing engine. The handlebars give complete control to riders’ hands while the comfortable seat provides maximum movement to tackle different obstacles during the ride. The suspension and braking system allows the rider to explore new terrains.
