Honda CRF450R [2021-2022]: A Motocross Beast Refined

Introduction

The Honda CRF450R has long been a titan in the motocross world, and the 2021–2022 iteration cements its reputation as a machine built for riders who demand precision, power, and adaptability. Designed to dominate tracks with its aggressive engineering yet remain approachable for skilled amateurs, this generation of the CRF450R feels like a culmination of Honda’s relentless pursuit of motocross perfection. After spending a day throwing it around a rugged MX circuit, here’s why this bike leaves an indelible impression.

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Engine Performance: Where Brutality Meets Control

At the heart of the CRF450R lies a 449.7cc liquid-cooled single-cylinder engine, tuned to deliver 53 HP at 9,000 RPM and 48 Nm of torque at 7,000 RPM. These numbers translate to a visceral riding experience. The throttle response is immediate, thanks to Honda’s PGM-FI fuel injection system with a 46mm downdraft throttle body. Unlike carbureted rivals, this bike eliminates bogging during hard accelerations out of corners—a critical advantage when chasing lap times.

The engine’s character is surprisingly versatile. In "Smooth" mode (available on select trims like the CRF450RWE), power delivery feels almost docile, ideal for technical sections or slippery conditions. Switch to "Aggressive," and the CRF450R transforms into a snarling animal, demanding respect with its explosive mid-to-high-range punch. The 5-speed gearbox shifts with mechanical precision, though the clutch can feel stiff during prolonged use—a common trade-off for its durability.

Key highlights:
- Launch Control: A game-changer for gate starts. It limits wheel spin while maximizing forward thrust.
- Titanium Yoshimura exhaust: Reduces weight and sharpens the exhaust note without crossing into obnoxious territory.
- Liquid cooling: Even after back-to-back motos, the bike never showed signs of overheating.

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Handling and Suspension: Dancing on Dirt

Honda’s aluminum twin-tube frame strikes a delicate balance between rigidity and flex. At 110–112 kg (243–247 lbs) ready-to-ride, the CRF450R feels lighter than its specs suggest. Flicking it through rhythm sections or whipping around berms requires minimal effort, and the 1481mm (58.3-inch) wheelbase provides stability at speed without sacrificing agility.

The Showa suspension setup is nothing short of brilliant. The 49mm inverted fork offers 305–310mm (12–12.2 inches) of travel, while the rear Pro-Link® shock delivers 312–315mm (12.3–12.4 inches). Both are fully adjustable, and even at factory settings, they absorbed square-edged hits and landings from 10-foot jumps with composure. For heavier riders or ultra-technical tracks, tweaking the compression damping is a must—but that’s where MOTOPARTS.store’s suspension tuning kits come into play.

Tires and brakes:
- Dunlop MX3S/Geomax MX33 tires: Exceptional grip in loamy conditions, though they struggle slightly in deep mud.
- Front brake (260mm disc + dual-piston caliper): Strong initial bite but lacks the progressive feel of Brembo systems.
- Rear brake (240mm disc): Predictable and easy to modulate during slides.

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Ergonomics and Comfort: Built for Attack

With a 965mm (38-inch) seat height, the CRF450R towers over shorter riders but rewards tall pilots with ample room to shift weight. The seat itself is firm—typical for MX bikes—but the narrow chassis design makes it easier to grip with your knees. Standing up on the pegs feels natural, and the handlebar positioning strikes a perfect middle ground for both attack posture and seated riding.

Notable ergonomic details:
- Electric start: A welcome convenience on most 2021–2022 models (except the base 2021 trim, which uses kick-start).
- Rider triangle: Aggressive but not punishing, even during 30-minute motos.
- Bodywork: The redesigned plastics improve airflow to the engine and make knee grip more secure.

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Competition: How Does It Stack Up?

The CRF450R faces fierce rivals in the 450cc motocross segment. Here’s how it compares:

1. KTM 450 SX-F

• Pros: Lighter (108 kg / 238 lbs), sharper throttle response, superior Brembo brakes.
• Cons: Harsher suspension at low speed, higher maintenance costs.
• Verdict: The KTM is for pure speed demons; the Honda offers better all-day rideability.

2. Yamaha YZ450F

• Pros: Broadest powerband, intuitive handling.
• Cons: Heavier (114 kg / 251 lbs), dated aesthetics.
• Verdict: The Yamaha is more forgiving for beginners, but the Honda feels racier.

3. Kawasaki KX450

• Pros: Smooth power delivery, ergonomic comfort.
• Cons: Soft suspension for aggressive riders.
• Verdict: The KX450 is a great trail bike; the CRF450R is a born racer.

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Maintenance: Keeping the Beast Alive

The CRF450R is reliable but demands meticulous care. Here’s what to prioritize:

1. Oil Changes

• Use SAE 10W-30 (1.8L / 1.9 quarts) every 15–20 hours. Synthetic blends like Motul 7100 reduce clutch wear.

2. Air Filter Servicing

• Clean after every ride in dusty conditions. Twin Air filters are a popular upgrade.

3. Chain and Sprockets

• The #520 chain requires regular lubrication. Swap worn sprockets for DID or Renthal kits.

4. Brake Fluid

• Flush with DOT 4 annually. Consider Galfer braided lines for improved feel.

5. Cooling System

• Check coolant levels monthly. Engine Ice offers better heat dissipation than standard fluids.

6. Suspension Rebuilds

• Service forks and shock every 50–60 hours. MOTOPARTS.store stocks Showa seal kits.

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Final Thoughts

The Honda CRF450R [2021–2022] isn’t just a motocross bike—it’s a statement. It rewards skill, punishes complacency, and begs to be pushed harder with every lap. Whether you’re chasing championships or weekend bragging rights, this machine delivers a thrilling blend of raw power and refined engineering. And when it’s time to replace those worn-out parts or bolt on performance upgrades, MOTOPARTS.store has everything you need to keep your CRF450R at peak performance.

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Specifications sheet

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