Honda CRF450X User Manual

Subframe Upright Position
3. Tighten the screw (4) on the air cleaner
connecting boot clamp (5).
4. Install the muffler (page 63).
5. Install the left side cover (6) and left side
cover bolt (7). Close the air cleaner box cover
(8) and turn the quick fastener (9) clockwise.
(6) left side cover (8) air cleaner box cover
(7) left side cover bolt (9) quick fastener
6. Install the right side cover (10) and right side
cover bolt (11).
(1) subframe upper mounting bolts
(2) subframe
(3) subframe lower mounting bolts
Installation
1. Loosen the subframe upper mounting bolts
(1).
2. Loosely attach the lower ends of the subframe
(2) to the mainframe while connecting the air
cleaner connecting boot to the carburetor.
Be careful not to bend the subframe.
Install the subframe lower mounting bolts (3).
Tighten the subframe upper mounting bolts
first, then tighten the subframe lower
mounting bolts to the specified torque:
upper bolts: 22 lbf·ft (30 N·m, 3.1 kgf·m)
lower bolts: 36 lbf·ft (49 N·m, 5.0 kgf·m)
40
Servicing Your Honda
(3)
(2)
(1)
(4)
(5)
(4) screw
(5) air cleaner connecting boot clamp
(6)
(7)
(9)
(8)
(10)
(11)
(10) right side cover
(11) right side cover bolt
7. Install the seat (page 36).

Honda CRF450X Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke	96.0mm x 62.1mm
Compression Ratio	12.0:1
Induction	Programmed Fuel Injection (PGM-FI), 46mm throttle body
Front Brake	Single 240mm disc with twin-piston caliper
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	110/100-18
Wheelbase	58.3 inches
Fuel Capacity	2.0 gallons
Final Drive	#520 chain; 13T/51T
Front Suspension	49mm leading-axle inverted telescopic Showa fork; fully adjustable
Rear Suspension	Pro-Link Showa single shock with spring preload adjustability
Trail	4.6 inches
Curb Weight	275 pounds (Includes all standard equipment, required fluids and a full tank of fuel—ready to ride)
Rake	27.0°