Honda CRF450RX 2020 User Manual

Torque Specifications
Technical Information 175
(cont’d)
Torque Specifications
Check and tighten nuts, bolts, and fasteners before every outing.
Nuts, Bolts, Fasteners
LEFT SIDE
(8)
(1)
(6)
(5)
(9)
RIGHT SIDE
(10)
(1)
(2)
(6)
(7)
(4)
(3)
ENGINE
Item
Torque
Remarks
lbf·ft N·m kgf·m
1 Cylinder head cover
socket bolts 7 10 1.0
2 Clutch cover bolts 7 10 1.0
3 Water pump cover bolts 7 10 1.0
4 Crankshaft hole cap 11 15 1.5 NOTE 1
5 Oil filter cover bolts 7 10 1.0
6 Cylinder head bolts 37 50 5.1 NOTE 2
7 Exhaust pipe joint nuts 15 20 2.0
8 Drive sprocket bolt 23 31 3.2
9 Engine oil drain bolt 13 18 1.8 NOTE 2
10 Coolant drain bolt 7 10 1.0
NOTES: 1. Apply grease to the threads.
2. Apply engine oil to the threads and seating surface.

Honda CRF450RX 2020 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke	96.0mm x 62.1mm
Compression Ratio	13.5:1
Induction	Programmed Fuel Injection (PGM-FI), 46mm throttle body
Ignition	Full transistorized ignition
Transmission	5-speed
Final Drive	Chain
Front Brake	Single 260mm disc with twin-piston caliper
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	120/80-18
Wheelbase	58.3 inches
Seat Height	37.8 inches
Ground Clearance	12.9 inches
Starter	Electric
Trail	4.6 inches
Front Suspension	49mm inverted fork with rebound and compression damping adjustability; 12.0 inches travel
Rear Suspension	12.4 inches of travel
Valve Train	Unicam, four-valve