Honda CRF450R 2011 User Manual

106 Servicing Your Honda
Exhaust Pipe/Muffler
1. Remove the gasket (1).
2. Install the muffler clamp (2) and a new gasket
onto the exhaust pipe (3).
3. Install the muffler (4).
4. Install the muffler clamp (2) by aligning the tab
(5) of the muffler clamp with the cutout (6) of
the muffler.
5. Install the washer A (7), washer B (8), muffler
mounting B bolt (9) and muffler mounting A
bolt (10).
Be careful not to get the air cleaner case rubber
(11) caught between the subframe (12) and
muffler stay (13) while installing the muffler.
Check for cuts, slits, or cracks in the rubber.
Replace the rubber, if necessary.
6. Tighten the muffler clamp bolt (14) to the
specified torque:
21 N·m (2.1 kgf·m, 15 lbf·ft)
7. Tighten the muffler mounting B bolt (9) and
muffler mounting A bolt (10) to the specified
torque:
26 N·m (2.7 kgf·m, 19 lbf·ft)
Muffler Installation
(1) gasket (new) (3) exhaust pipe
(2) muffler clamp
(2) muffler clamp (5) tab
(4) muffler (6) cutout
(3)
(1)
(2)
(5)(2)(6)
(4)
(7) washer A
(8) washer B
(9) muffler mounting B bolt
(10) muffler mounting A bolt
(11) air cleaner case rubber
(12) subframe
(13) muffler stay
(8)
(7)
(13)
(10)(11)
(12)
(9)
(14) muffler clamp bolt
(9) muffler mounting B bolt
(10) muffler mounting A bolt
(14)
(10)
(9)
CRF450R.book Page 106 Thursday, July 8, 2010 9:34 AM

Honda CRF450R 2011 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke	96.0mm x 62.1mm
Compression Ratio	12.0:1
Transmission	Close-ratio five-speed
Final Drive	#520 chain; 13T/48T
Front Brake	Single 240mm disc with twin-piston caliper
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	120/80-19
Trail	114mm (4.5 inches)
Induction	PGM-FI, 46mm throttle body
Front Suspension	48mm inverted with rebound and compression damping adjustability; 12.2 inches travel
Rear Suspension	Pro-Link single shock with rebound and compression damping adjustability; 12.4 inches of travel
Wheelbase	58.7 inches
Seat Height	37.6 inches
Fuel Capacity	1.5 gallons