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Honda CRF450X 2020

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Trail / Enduro / Cross Country / Woods

2020 Honda CRF450X

449cc

4-stroke

275lb

Curb weight

37.9in

Seat height

12in

Front travel

6spd

Gearbox

2020 Honda CRF450X overview

The 2020 Honda CRF450X is a four-stroke enduro and off-road bike with a liquid-cooled, fuel-injected 449cc SOHC single-cylinder engine, electric start, and a six-speed transmission. Its aluminum perimeter frame carries a 49mm adjustable Showa fork with 12.0 inches of travel and a Pro-Link Showa rear shock with 11.8 inches of travel. Seat height is 37.9 inches, curb weight is 275 lb, and fuel capacity is 2.01 gal.

Equipment includes a titanium fuel tank, spark arrester, sidestand, and skid plate. New graphics are the model-year update. The CRF450X is for off-road use only and is not street legal in the US. Its MSRP is $9,799, plus a $380 destination charge.

Who it's for

This bike suits riders looking for a full-size four-stroke for trail, enduro, cross-country, or woods riding. Its 449cc engine, six-speed transmission, and long-travel suspension fit riders tackling off-road routes and organized cross-country events. The 37.9-inch seat height and 275 lb curb weight make it a substantial choice, so it is better suited to riders comfortable handling a large-displacement dirt bike than to beginners seeking a smaller, lighter machine. It is not for riders who need a motorcycle for public streets.

Quick facts

  • The 2020 Honda CRF450X has a 449cc fuel-injected 4-stroke engine, a 6-speed gearbox and electric start.
  • The 2020 CRF450X weighs 275 lb ready to ride and has a 37.9 in seat height.
  • The 2020 CRF450X runs 80/100-21 front and 110/100-18 rear tires.
  • The 2020 CRF450X takes 1.2 US qt (1.1 L) of 10W-30 engine oil; change it every 600 mi or 6 months (Regular off-road use, non-competition).
  • The 2020 CRF450X lists at $9,799 (US MSRP). It is not street legal in the US.

2020 Honda CRF450X specifications

Engine

Displacement
449cc
Stroke
4-stroke
Fuel system
Fuel injection
Bore × stroke
96 × 62.1 mm
Compression
12.0:1
Cooling
Liquid
Configuration
Single-cylinder
Valve train
SOHC
Valves
4
Engine oil
1.2 US qt (1.1 L)
Oil type
10W-30
Coolant
1.2 US qt (1.14 L)

Clutch

Type
Wet multiplate
Actuation
Cable
Assist
None (standard clutch)

Drivetrain

Starting
Electric
Transmission
6-speed
Chain size
520
Chain links
116
Rear sprocket
51T

Dimensions

Seat height
37.9″
Ground clearance
13.1″
Wheelbase
58.7″
Width
32.2″
Height
50.3″
Length
86.3″
Curb weight
275 lb
Fuel capacity
2.01 gal

Price & warranty

Destination charge
$380
Colors
Red

Equipment

Spark arrester
Standard
Titanium fuel tank
Standard
Sidestand
Standard

Frame & steering

Frame material
Aluminum
Architecture
Perimeter
Rake
27.6°
Trail
5.6″

Suspension

Front
49mm leading-axle inverted telescopic Showa coil-spring fork with rebound and compression damping adjustability
Front travel
12″
Rear
Pro-Link Showa single shock with adjustable spring preload, rebound and compression damping adjustability
Rear travel
11.8″

Wheels & tires

Front wheel
21″
Rear wheel
18″
Front tire
80/100-21 51M Dunlop MX52F
Rear tire
110/100-18 64M Dunlop MX52

Brakes

Front disc
260 mm
Rear disc
240 mm

Stock features

Skid plate
Yes
Radiator fan
No
Street legal (US)
No

Battery / electrical

Battery
Yes
OEM battery
HY93-C
Chemistry
Lithium
Voltage
12V
Capacity
4.5 Ah

2020 Honda CRF450X maintenance

From the maker's manuals. Tap a row to see the manual page.

Service intervals

Change engine oil (first time)
After 100 mi or 1 month (Regular off-road use, non-competition)
Change engine oil (first time)
After the first break-in ride (Competition use)
Change engine oil
Every 600 mi or 6 months (Regular off-road use, non-competition)
Change engine oil
Every 4 races or about 15 hours (Competition use)
Replace oil filter (first time)
After 100 mi or 1 month (Regular off-road use, non-competition)
Replace oil filter (first time)
After the first break-in ride (Competition use)
Replace oil filter
Every 600 mi or 6 months (Regular off-road use, non-competition)
Replace oil filter
Every 4 races or about 15 hours (Competition use)
Clean air filter
Every 600 mi or 6 months (Regular off-road use, non-competition)
Replace air filter
Every 3 years (Regular off-road use, non-competition)
Clean air filter
Every race or about 3.5 hours (Competition use)
Clean air filter
Every moto (Competition use, dusty riding condition)
Replace air filter
Every 3 years (Competition use)
Inspect spark plug
Every 600 mi or 6 months (Regular off-road use, non-competition)
Inspect spark plug
Every race or about 3.5 hours (Competition use)

Spark plug

Spark plug
NGK SILMAR9A-9S
Plug gap
0.031 – 0.035 in (0.8 – 0.9 mm)
Spark plug (optional)
NGK SILMAR10A-9S

Torque specs

Oil drain bolt
13 ft‑lb (18 N·m, 1.8 kgf·m)
Oil filter cover bolts
7.4 ft‑lb (10 N·m, 1.0 kgf·m)
Spark plug
16 ft‑lb (22 N·m, 2.2 kgf·m)
Front axle nut
65 ft‑lb (88 N·m, 9.0 kgf·m)
Front axle pinch bolts
15 ft‑lb (20 N·m, 2.0 kgf·m)
Rear axle nut
94 ft‑lb (128 N·m, 13.1 kgf·m)
Upper triple clamp bolts
16 ft‑lb (22 N·m, 2.2 kgf·m)
Lower triple clamp bolts
15 ft‑lb (20 N·m, 2.0 kgf·m)
Steering stem nut
80 ft‑lb (108 N·m, 11.0 kgf·m)
Handlebar clamp bolts
16 ft‑lb (22 N·m, 2.2 kgf·m)
Front brake caliper mounting bolts
22 ft‑lb (30 N·m, 3.1 kgf·m)
Front brake disc nuts
12 ft‑lb (16 N·m, 1.6 kgf·m)
Rear brake disc nuts
12 ft‑lb (16 N·m, 1.6 kgf·m)
Rear sprocket nuts
24 ft‑lb (32 N·m, 3.3 kgf·m)
Front sprocket bolt
23 ft‑lb (31 N·m, 3.2 kgf·m)
Chain adjuster locknut
20 ft‑lb (27 N·m, 2.8 kgf·m)
Shock absorber mounting bolts
32 ft‑lb (44 N·m, 4.5 kgf·m)
Coolant drain bolt
7.4 ft‑lb (10 N·m, 1.0 kgf·m)

Parts that fit the 2020 Honda CRF450X

Exact parts for this bike. Tap one to see every store selling it, cheapest first.

Maintenance

Oil, filters, spark plug, battery, brakes and drive parts you replace as you ride.

Tires

Stock sizes, from the maker's manual.

Not listed yet: Rear brake pads. We only list a part once its maker names it for this bike, so we don't guess.

Prices include shipping where the store lists it and were checked Nov 1, 2026. A store that doesn't list its shipping is placed as if it charged what the other stores do. Prices change, so confirm at the store before you buy.

2020 Honda CRF450X vs 2019

New for 2020: New graphics. None of the specs below changed from the 2019 model.

Spec20192020Changed
MSRP$9,799Same
Displacement449ccSame
Curb weight275 lbSame
Seat height37.9 inSame
Front travel12 inSame
Rear travel11.8 inSame
Fuel2.01 galSame
Gearbox6-speedSame
Front tire80/100-21 51M Dunlop MX52FSame
Rear tire110/100-18 64M Dunlop MX52Same

2020 Honda CRF450X photos

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Honda CRF450X FAQ

  1. What engine does the 2020 Honda CRF450X have?

    It has a liquid-cooled, fuel-injected 449cc four-stroke SOHC single-cylinder engine with four valves and a six-speed transmission.

  2. How tall is the seat on the 2020 Honda CRF450X?

    The seat height is 37.9 inches.

  3. How much does the 2020 Honda CRF450X weigh?

    Its curb weight is 275 lb.

  4. How much suspension travel does the 2020 Honda CRF450X have?

    The front suspension has 12.0 inches of travel, and the rear has 11.8 inches.

  5. What is the fuel capacity of the 2020 Honda CRF450X?

    Fuel capacity is 2.01 gal.

  6. What engine oil does the 2020 Honda CRF450X use?

    It uses SAE 10W-30 engine oil, with a capacity of 1.2 US qt (1.1 L).

  7. Is the 2020 Honda CRF450X street legal?

    No. The 2020 Honda CRF450X is not street legal in the US.

  8. How much did the 2020 Honda CRF450X cost new?

    The MSRP was $9,799, with a $380 destination charge.

  9. What size tires does the 2020 Honda CRF450X use?

    80/100-21 front and 110/100-18 rear.

  10. What spark plug does the 2020 Honda CRF450X take?

    NGK SILMAR9A-9S, gapped 0.031 – 0.035 in (0.8 – 0.9 mm).

  11. What chain and sprockets does the 2020 Honda CRF450X use?

    A 520 chain with 116 links.

  12. Is the 2020 Honda CRF450X different from the 2019 model?

    Yes. New for 2020: New graphics. None of the main specs changed from the 2019 model.

Other Honda CRF450X model years

Specs from Honda's owner's manual and Honda's website. Updated .