CB650SC/Specifications

Type	Standard
Frame	RC13 (shared with CBX650E)
Displacement	655 cc
Power	72 bhp @ 9500 rpm
Dry Weight	197.0 kg (434.4 lbs)
Top Speed	233.4 km/h (145.0 mph)
1/4 Mile	12.13 s @ 174.50 km/h (108.43 mph)
Wheelbase	1,461 mm (57.5 in)
Seat Height	790 mm (31.1 in)

Common Threads and Sizes

Item	Size	# needed	Note
Engine Oil Drain (sump) bolt	M12x1.5mm	1
Short hydralic banjo bolt	M10x1.25mm	6	Brakes and clutch
Double hydralic banjo bolt	M10x1.25mm	1	Brakes

Engine

Oil

Weight	Grade	w/ filter	w/o filter
SAE 10W40	API SE-SF	2.5L	2.2L

Carbs

Keihin VE54A

Item	Spec	Note
Venturi	29.2mm (1.15in)
Type	VE
Style	CV	(constant velocity)
Float	18.5mm +/-1mm (0.61in +/-0.04in)	Non-adjustable
Idle	1,100RPM +/-100RPM
Throttle grip free-play	2-6mm (0.08-0.24in)
Fast Idle	3,000RPM +/-500RPM	choke on
Needle marking	"79K"

Carb Jets

• Main: #115
  • 991013-931-150 -> 99101G-HB1-150 -> 99101M-AZ1-150

• Slow: #35
  • 99103M-A40-350 -> 99103G-Y60-350

• Needle Holder:
  • 16165-449-771

• Needle Set:
  • 16012-ME5-671

• Idle Screw Set:
  • 16016-ME5-671 -> 16016-KR3-671 -> 16016-MY6-770

Stage	Main	Slow	Needle shims 0.5mm (per each carb)	Note
0 (OEM)	#115	#35	0	Stock
1	#118	#35	1	stock engine and with stock air intake and stock exhaust system
2	#120	#38	1	stock or lightly modified engine with improved air intake using stock air intake box and baffled aftermarket exhaust or lightly modified exhaust
3	#125	#38	2	stock or lightly modified engines with individual air intakes and baffled aftermarket exhaust system
4	#125	#40	2	modified engines with individual air intakes and non-baffled exhaust system (racing use only)
5	#130	#40	2
Pro	#118, #120, #122, #125 and #128	#38, #40	2	experimenting with different engine, air intake and exhaust system

• Needle Shims: ID: 3.2mm, OD: 7mm, thickness: 0.5mm
• Slow jet: Length: 28mm, Diameter (thread): 5.9mm, Diameter (head): 4.9mm
• Main jet: Length: 8mm, Diameter (thread): 4.9mm, Diameter (head): 6mm

Wheels

Construction: Cast Alloy

Tires

Position	Size
Front	100/90-19 (OEM: 3.50-19)
Rear	130/90-16

Brakes

Position	Type	Number	Size
Front	Disc	x2
Rear	Drum	x1

Suspension

Forks (Front)

• Showa
• Diameter: 39mm
• Type: leading-axle
• Adjust: air-adjustable
• Bushings: dual Syntallic
• Anti-dive: TRAC

Shocks (Rear)

• VHD
• Type: rebound damping
• Adjustable: four-way