FMDB

Honda CRF450X 2019

Advanced · 8/10

Trail / Enduro / Cross Country / Woods

2019 Honda CRF450X

449cc

4-stroke

275lb

Curb weight

37.9in

Seat height

12in

Front travel

6spd

Gearbox

2019 Honda CRF450X overview

The 2019 Honda CRF450X is an off-road enduro bike for trail, woods and cross-country riding. Its 449cc liquid-cooled four-stroke single uses fuel injection and a SOHC four-valve head, with electric start only and a wide-ratio six-speed gearbox. Redesigned for 2019 around the CRF450R’s Unicam engine and aluminum twin-spar frame, it pairs a fully adjustable Showa fork with a Pro-Link rear suspension. Off-road equipment includes a headlight and taillight, spark arrester, sidestand and titanium fuel tank; the rear wheel is 18 inches. The CRF450X is not street legal in the US. Its 37.9-inch seat height, 13.1-inch ground clearance and 275-pound curb weight are useful considerations when comparing it with other trail and enduro bikes.

Who it's for

This bike is for off-road riders who want a large-displacement four-stroke for trails, woods, enduro routes or cross-country riding. Its wide-ratio gearbox, electric start, sidestand and spark arrester suit rides that range beyond a motocross track, while the adjustable suspension supports setup for different off-road conditions. It is not for riders who need a motorcycle for public streets: the CRF450X is an off-road-only model and is not street legal in the US.

Quick facts

  • The 2019 Honda CRF450X has a 449cc fuel-injected 4-stroke engine, a 6-speed gearbox and electric start.
  • The 2019 CRF450X weighs 275 lb ready to ride and has a 37.9 in seat height.
  • The 2019 CRF450X runs 80/100-21 front and 110/100-18 rear tires.
  • The 2019 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 2019 CRF450X lists at $9,799 (US MSRP). It is not street legal in the US.

2019 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

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 fully adjustable leading-axle inverted telescopic Showa coil-spring fork
Front travel
12″
Rear
Pro-Link system; fully adjustable Showa single shock
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

2019 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 2019 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.

2019 Honda CRF450X photos

01 / 05

Honda CRF450X FAQ

  1. What engine does the 2019 Honda CRF450X have?

    It has a fuel-injected, liquid-cooled four-stroke single-cylinder engine with SOHC and four valves.

  2. What is the seat height of the 2019 Honda CRF450X?

    The seat height is 37.9 in.

  3. How much does the 2019 Honda CRF450X weigh?

    Its curb weight is 275 lb.

  4. How much suspension travel does the 2019 Honda CRF450X have?

    Front travel is 12.0 in, and rear travel is 11.8 in.

  5. How much fuel does the 2019 Honda CRF450X hold?

    Fuel capacity is 2.01 gal.

  6. What engine oil does the 2019 Honda CRF450X use?

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

  7. Is the 2019 Honda CRF450X street legal?

    No. The 2019 CRF450X is for off-road use only and is not street legal in the US.

  8. How much did the 2019 Honda CRF450X cost new?

    Its US MSRP was $9,799.

  9. What size tires does the 2019 Honda CRF450X use?

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

  10. What spark plug does the 2019 Honda CRF450X take?

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

  11. What chain and sprockets does the 2019 Honda CRF450X use?

    A 520 chain with 116 links.

Other Honda CRF450X model years

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