1999 Yamaha YZF-R1 engine making whining noise
1999 YZF R1 is whining when riding down the road with the throttle on or off coasting, definitely, not bearings or brake pads, it's on the left-hand side of the engine, gets louder with speed until exhaust drowns it out anyway.
Motorcycles - Yamaha - YZF-R1 - 1999 Yamaha YZF-R1