Yamaha 2009 YZF-R1 (Y) User Manual

FEATURES
1-5
Aims and advantages of using YCC-I system
• Improved power band
By using a dual intake funnel system, YCC-I optimizes the effectiveness of the fuel injection sys-
tem to deliver an incredibly precise air/fuel mixture to the combustion chamber. This degree of
intake volume control gives both improved low to mid-range power, as well as improved power in
the higher rpm range. In effect, the YCC-I offers higher levels of power across the RPM range.
• Electronically controlled intake length
The YCC-I system consists of four lightweight plastic resin funnels, and each of these is divided
into an upper and lower portion. Depending upon operating conditions, the funnels can be joined
to form a single long funnel, or split to create a short funnel. This change is performed instanta-
neously by an electrically controlled servo-motor which handles the function so smoothly that the
rider is unaware it is happening.
A. Down position (long intake)
(Low rpm to Mid rpm)
B. Up position (short intake)
(High rpm)

Yamaha 2009 YZF-R1 (Y) Specifications

General

Bore x Stroke	78.0 mm x 52.2 mm
Compression Ratio	12.7:1
Fuel System	Fuel injection with YCC-T and YCC-I
Ignition	TCI: Transistor Controlled Ignition
Transmission	6-speed w/multiplate slipper clutch
Final Drive	Chain
Front Tire	120/70-ZR17
Rear Tire	190/55-ZR17
Seat Height	835 mm
Wet Weight	206 kg
Engine Type	Liquid-cooled, 4-stroke, DOHC, inline 4-cylinder
Front Suspension	43 mm inverted fork, fully adjustable
Rear Suspension	Single shock, fully adjustable
Front Brakes	Dual 310 mm discs, radial-mount 6-piston calipers
Rear Brakes	220 mm disc, single-piston caliper
Dimensions (L x W x H)	2, 070 mm x 715 mm x 1, 130 mm
Wheelbase	1415 mm
Fuel Capacity	18 L