Yamaha YZF-R1 Service Manual

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8. Valve Spring Set (14B-A2110-72)
This valve spring is used when the camshaft is mounted from the kit.
NOTICE
When using this valve spring, use the camshafts 14B-12170-71, and 14B-12180-71.
The camshaft, valve spring and ECU in this set can only be used in the following combinations.
Parts List
No. PART No. PART NAMEQ’TY REMARKS
114B-12113-72 SPRING, 1 8 I.D.Color: YELLOW-
GREEN (INT)
2 14B-12114-72 SPRING, 28I.D.Color: BROWN (EXT)
CAMSHAFT VALVE SPRING ECU
2009 Models
14B-12170-70
14B-12180-70
14B-A2110-71
14B-8591A-70
1
4B-8591A-71
2010 Models
2011 Models
14B-12170-71
14B-12180-71
14B-A2110-72 14B-8591A-72

Yamaha YZF-R1 Specifications

General

Bore x Stroke	79.0mm x 50.9mm
Compression Ratio	13.0:1
Fuel System	Fuel injection with YCC-T and YCC-I
Final Drive	Chain
Front Tire	120/70ZR17
Rear Tire	190/55ZR17
Wheelbase	55.3 in
Fuel Capacity	4.5 gal
Curb Weight	448 lb
Width	27.2 in
Ground Clearance	5.1 in
Engine Type	Liquid-cooled inline 4-cylinder; DOHC, 4 valves per cylinder
Transmission	6-speed
Clutch	Multiplate slipper clutch
Front Suspension	43mm KYB® inverted fork; fully adjustable
Rear Suspension	KYB® single shock; fully adjustable
Front Brakes	Dual 320mm hydraulic disc; ABS
Rear Brakes	220mm hydraulic disc; ABS