1999-2000
Yamaha YZF-R6 (5EB)
599cc 16v inline four, 118bhp @ 13,000rpm, 49ftlb @ 11,500rpm. Aluminium frame and swingarm, fully adjustable RWU fork, 169kg.
2001-2002
Yamaha YZF-R6 (5MT)
Lighter pistons and modified rods, less weight, different handlebar angle.
2003-2004
Yamaha YZF-R6 (5SLB)
599cc 16v inline four, 121bhp @ 13,000rpm, 51ftlb @ 12,000rpm. Aluminium frame and swingarm, fully adjustable RWU fork, 162kg. Refinements to 90% of engine internals for more power, with fuel injection. Redesigned lighter frame and swingarm, revised suspension. Styling update, new headlights.
2005
Yamaha YZF-R6 (5SLM)
599cc 16v water-cooled inline four, 121bhp @ 13,000rpm, 51lbft @ 12,000rpm. Aluminium frame and swingarm, fully adjustable inverted fork, 162kg. New cams, bigger throttle bodies, refined fuel injection, modified frame, inverted fork with new front tyre size (120/70 R17), new brakes, new rear…