2017 Honda CRF450X

Off-Road Warrior.

It’s a dream everyone had, but nobody could deliver on—until Honda invented the CRF450X. The light weight and power of a motocross bike, available to trail riders, Baja demons, and cross-country racers everywhere. But actually the CRF450X is a whole lot better than just an MX bike off the track. It gets a ton of specialized touches and refinements that hone it for the trail.

Honda engineers fine-tuned everything from the steering geometry, suspension, and power delivery to better suit off-road riding. Additional extras like the Honda progressive steering damper make it a bike you’ll appreciate for a lot longer than just a 20-minute moto. It not only helps reduce rider fatigue but also improves the CRF450X’s cornering. And then there’s the CRF450X’s Honda Unicam® engine—tough enough to survive Baja, it can easily survive one of your weekend rides. Best of all, the CRF450X features both an electric starter and a kickstarter, so you get both convenience and supreme reliability—exactly the traits, along with performance, that make the CRF450X the machine of choice for cross-country riders everywhere.


  • 18-INCH REARWHEEL: 18-inch rear wheel features same lightweight rear hub and HRC works-type lightweight-aluminum spoke nipples as used on CRF250R.
  • LED TAILLIGHT: LED taillight integrated into rear fender. It’s light, compact and rigid.
  • WORKS-STYLE REAL BRAKE: HRC works-type rear brake system uses a 240mm brake rotor to its integrated rear master-cylinder and fluid reservoir, a set-up that eliminates the separate reservoir and hose.
  • SUPERIOR ERGONOMICS: Placing the rider’s legs at the narrowest part of the frame helps improve comfort and handling.
  • TWIN-SUMP LUBRICATION: Twin-sump lubrication system separates the oil supply for the crankshaft, and the piston and valve train from the clutch and transmission. This ensures a cool supply of oil to the clutch, eliminates clutch and transmission material contamination of the engine oil, reduces the amount of circulating oil and permits the use of a smaller oil pump.
  • GEAR-DRIVEN COUNTERBALANCER: Gear-Driven Counterbalancer reduces vibration and drives the water pump. Eight clutch plates provide the surface area necessary to handle the engine's massive torque, while carefully matched clutch springs provide a light feel at the lever.
  • 449cc UNICAM® ENGINE: Honda’s Unicam cylinder heads combine the best of single- and double-overhead-cam designs. The configuration contributes to a compact engine that saves weight over a comparable dual-overhead-camshaft motor and also permits a narrow included valve angle. This flattens the combustion chamber to facilitate ignition flame propagation, allowing a high compression ratio. Since less space is taken up in the cylinder head, the camshaft sits lower in the head for a more compact engine and a lower center of gravity.
  • TITANIUM INTAKE VALVES: Lightweight titanium intake valves permit use of smaller valve springs, reducing overall engine height.
  • DUAL RADIATORS: Dual radiators feature a refined core area for improved heat dissipation compared with conventional dual-radiator designs. Coolant recovery tank is located in front of the engine between the frame downtubes for improved center of gravity. Coolant tank is protected by a plastic skid plate.
  • RENTHAL HANDLEBAR: Aluminum Renthal handlebar (971 bend) is rubber-mounted to help reduce rider fatigue and improve comfort.
  • ELECTRIC STARTER: Electric start system ensures trouble-free starting in all conditions. Electric starter also drives the clutch side of the crankshaft to provide superior lubrication to starter gears while producing a narrow engine with a short, strong crank.
  • HP SD: Perfected on the MX circuit, the Honda Progressive Steering Damper™ (HPSD™) not only improves cornering, but also helps reduce arm fatigue. The damping ratio varies according to handlebar-deflection speed and position, returning both improved stability and light, responsive handling.
  • WORKS-STYLE FRONT BRAKE: Compact twin-piston front brake caliper, anodized-aluminum brake pistons and lightweight 240mm front disc offer great stopping power while minimizing unsprung weight for improved turning and handling.

General Information

Manufacturer Honda
Model Year 2017
Model CRF450X
Model Code CRF450X
Color Red



Front - Single 240 mm disc with 2-piston caliper

Rear - Single 240 mm disc


Front - 80/100-21

Rear - 110/100-18


Weight Curb - 269 lb.
Ground Clearance 13.6 in.
Wheelbase 58.3 in.
Seat Height 37.9 in.


Transmission Wide-ratio 5-speed
Final Drive #520 T-ring-sealed chain; 13T/51T


Engine 449 cc liquid-cooled single-cylinder four-stroke
Displacement 449 cc
Bore x Stroke 96 x 62 mm
Compression Ratio 12:1
Carburetion Keihin® 40 mm flat-slide with Throttle Position Sensor (TPS)
Fuel Capacity 1.9 gal. including 0.4 gal. reserve
Ignition CD with electronic advance & lighting coil
Cooling Liquid
Exhaust 30 mm valve


Starting Electric & kick

Front - 47 mm inverted Showa® cartridge fork with 16-position rebound & 16-position compression-damping adjustability; 12.4 in. travel

Rear - Pro-Link® Showa® single-shock with adjustable spring-preload, 17-position rebound-damping adjustability & compression-damping adjustment separated into low-speed (13 positions) & high-speed (3.5 turns); 12.4 in. travel

Rake 27.10° (Caster Angle)
Trail 4.3 in. (110 mm)