The new Yamaha 2021 YFZ450R SE Sports ATV comes with GYTR performance components and a color and visual design that makes the car appear fast even when it’s not moving. Its review, along with its price and specification, is written below.
Yamaha 2021 YFZ450R SE Sports ATV – Features and Price
Top Features
The YFZ450R SE is the world’s most technologically sophisticated sport ATV. 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 YFZ450R SE is built 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 light, snappy handling, and rider comfort all at the same time.
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 fantastic “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 YFZ450R SE to provide accurate fuel delivery. 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) is also added for 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.
With additions like the GYTR® front grab bar to complement its distinctive graphics package, the YFZ450R SE has a racy personalized appearance.
Engine
The 449cc fuel-injected engine offers 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 YFZ450R SE to provide accurate fuel delivery. 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) is also added for 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 counterbalancer. 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 frame is as thin as feasible. As the new suspension travels through its entire 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
With additions like the GYTR® front grab bar to complement its distinctive graphics package, the YFZ450R SE has a racy personalized appearance. 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.
Yamaha 2021 YFZ450R SE Sports ATV – Price
The new Yamaha 2021 YFZ450R SE Sports ATV is available at $9,899 in Yamaha Black and White color options.
Yamaha 2021 YFZ450R SE Sports ATV – Technical Specifications
Engine
| Engine Type | 449cc liquid-cooled DOHC 4-stroke; 5 titanium valves |
| Bore x Stroke | 95.0mm x 63.4mm |
| 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 |
| Compression Ratio | 11.8:1 |
Chassis
| Suspension / Front | Independent double-wishbone with Kashima coated piggyback shocks; high/low-speed compression, rebound and threaded preload adjustment, 9.8-in travel |
| Suspension / Rear | Cast aluminum swingarm with piggyback shock; high/low-speed compression, rebound and threaded preload adjustment, 11.0-in 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 | 50.0 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 Yamaha 2021 YFZ450R SE Sports ATV is an awesome quad bike with many impressive features. The powerful and high-performing engine has the full support of a compact and light chassis. The new suspension and braking system ensures the best performance under all conditions.
