2006 SP model
This year also saw the introduction of a limited-production SP model with a slipper clutch, Öhlins suspensions (with sophisticated damping adjustments and ride height adjustment) and forged aluminium Marchesini Y-spoke wheels that were 400g lighter than normal wheels.
A special GunSmoke colour was used for the bodywork and chassis, only 500 units were produced for Europe.
The fifth generation of the YZF-R1 targeted the handling of 600cc motorbikes. To achieve this, a lot of work was done on the rigidity balance of the whole chassis.
A new frame, new swingarm and new front fork were the result of this target along with new 6-pot brake callipers setting new standards regarding braking performance.
The air intake featured YCC-T (a kind of ‘fly-by-wire’ throttle technology from MotoGP) and YCC-I (a variable intake that switches from long to short intake funnels at higher rpm). The compression ratio was increased to 12.7 to 1 and a 4-valve engine design (all previous generations had 5 valves) incorporates lightweight titanium valves. Horsepower output was upped to 180 HP with a dry weight of just 177 kg.
A 3-way catalyser enabled The R1 to comply with tougher EU-3 regulations and a slipper clutch, similar to the one used on the SP model the year before, was now fitted as standard equipment.
Again new colouring and graphics were introduced in 2008.
2009 R1: Engine with uneven firing order
YZF-R1: State Of The Art Race Technology
The fifth generation R1: Precision Engineering
YZF-R1 Third generation: The real stuff
R1: A closer look at engineering details
R1 The world is a curve: Cornering that's what supersport is all about!
R1 and R6: The top class supersport machines
R1- How it all started