Yamaha YZF-R1

The Yamaha YZF-R1, introduced in 1998, is a sport bike manufactured by Yamaha Motor Company.

In late 2008 Yamaha announced they would release an all new R1 for 2009. The new R1 takes engine technology from the M1 Moto GP bike with its crossplane crankshaft, the first ever production motorcycle to do so. Crossplane technology, puts each connecting rod 90° from the next, with an uneven firing interval of 270°- 180°- 90°- 180°. The idea of this technology is to reduce internal crankshaft torque, thus giving the new R1 a more linear power delivery. Yamaha claims the bike would give the rider 'two engines in one', the low torque of a twin and the pace of an inline four. As with previous incarnations of the R1 the 2009 model keeps its YCC-T (Yamaha Chip Controlled Throttle)

Another advancement included on the 09 model is D-Mode Throttle Control Valve Mapping which allows a rider to choose between 3 distinct maps depending on the rider’s environment. Each mode of operation controls YCC-T characteristics changing how the R1 reacts to driver input. The first mode is Standard Mode, which delivers performance for a wide variety of driving conditions. The second mode is "A" mode which will give a rider more available power in the lower to middle RPM range. The 3rd mode is "B" mode, which is a dial back of the previous mode, designed to soften throttle response in inclement weather and heavy traffic. D-Mode throttle control is controlled via the rider through a forward mode button near the throttle.