Years sold: 2005-2006
MSRP new: $10,849 (2005) to $10,999 (2006)
Blue Book retail value: $5480 (2005) to $6400 (2006)
Basic specs: A dohc, 999cc, inline-Four with a fuel-injection system that features dual throttle valves and two injectors per cylinder. This engine propels one of the most potent sportbikes of its generation, with track-worthy suspension, brakes and chassis.
Why it's desirable: The 2005-06 GSX-R1000s are more coveted than the bikes that bookend them for a few reasons. In 2005, the bike received a comprehensive makeover, including engine and chassis improvements, but more importantly, the following generation GSX-R1000 (K7-K8) gained significant weight (14 pounds) due to stricter emissions regulations and the addition of a second exhaust silencer. The 2005 bike was also the first fitted with a slipper clutch. Strapped to the Cycle World dyno, the big Gixxer produced 157 horsepower and 80 foot-pounds of peak torque at the rear wheel. Here's what Road Test Editor Don Canet reported after attending the press introduction at Australia's Eastern Creek racetrack: "Roll-ons performed in second gear from middle revs torqued up a fluid power-wheelie as the tach needle swept past 9000 rpm. Yee-haw!"
Useful resources: Information about Suzuki's GSX-Rs is quite easy to find, as the model line has been incredibly popular over its nearly 30-year existence. Check out gixxer.com or gsxr.com for GSX-R-themed forums. This popularity also means that there are a plethora of aftermarket parts and accessories available for all generations of GSX-Rs.