Yamaha YZF-R1 Service Manual

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23. Front Fork ASSY
Front Fork Performance Adjustment Method
Designed to develop damping force independent of each other, the left leg develops the
compression damping force and the right one the rebound damping force.
Adjustment is possible in preload as well as in compression and rebound damping force.
Preload Adjustment Method
Turn clockwise to increase the preload and
anticlockwise to reduce the preload.
The adjustment range is 15 mm (1 mm/turn).
Shipping position: Tightened 5 turns from the preload
minimum position.
Parts List
No. PART No. PART NAMEQ'TY REMARKS
114B-23102-70 Fr. FORK ASSY. LH. 1 10.0 N/mm
2 14B-23103-70 Fr. FORK ASSY. RH. 1 10.0 N/mm
Compression
damping adjustor
Preload adjustor
Rebound
damping adjustor
Preload adjustor

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