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"
Choke type	By-starter

O-rings

Desc.	Part Number	I.D.	Thickness	Number
Small, (fuel tubes)		6mm	1.8mm	4x
Large, (fuel tee)		7mm	2mm	2x
Thin, (breather tube tees)				4x
Cly. head to boot couplings	91306-ME5-003 -> 91306-HA0-003	33.7mm	2.6mm	8x

Carb Parts

Keyster kit: K-893HK (http://www.siriusconinc.com/products/detail/2685)

Part/Jet	Size	OEM P/N	Keyster P/N	Series	Length	Diameter (thread)	Diameter (head)
Main	#115	99101-393-1150 -> 99101-GHB-1150 -> 99101-MAZ-1150	KHM-110115	99101-393 or KR28	8mm	4.9mm	6mm
Slow	#35	99103-MA4-0350 -> 99103-GY6-0350	KHS-29C035	N424-21(N424/21) or K26	28mm	5.9mm	4.9mm
Needle Holder		16165-449-771
Needle Set (Canada)	79K	16012-ME5-621 -> 16012-ME5-671
Needle Set (Europe)	79P (#D476)	16012-ME5-611	KHD-0476Z
Idle Screw Set		16016-ME5-671 -> 16016-KR3-671 -> 16016-MY6-770
Idle Screw Set (Europe)		16016-MA6-003	KHSS-138
Float valve		16165-413-751	KVN-16N00
Needle Shims					ID: 3.2mm	OD: 7mm	thickness: 0.5mm

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

Exhaust

Sealing

• Graphite coupler seal x1 - 18392-MG7-750 - 42.8 x 48.6 x 20mm
• Copper crush rings x4 - - 43.2 x 34.8 x 4.2mm

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