XB frame in the 2002 Firebolt XB9R sportbike. The Firebolt XB12R was introduced in 2004 and was initially sold alongside the smaller displacement Firebolt XB9R. The Lightning came in 2003 and was marketed by Buell as a streetfighter motorcycle. The XB9 engines had a displacement of , and the later XB12 engines had . The XB12 engine had a longer stroke of compared to that of on the XB9. The cylinder bore size between both engines was identical at . The Buell Ulysses XB12X debuted in July 2005. It had seating, ergonomics, and long-travel suspension that are suited for use on unpaved and rough roads. Buell advertised the Ulysses as "the world's first adventure sportbike." For 2008, among other changes, XBRR oil pump and ignition timing systems have been changed tapping into the XBRR race bike as well as the addition of heated grips and increased turning fork swing from 54° to 74°. The Ulysses XB12XT differs from the Ulysses XB12X in several areas. It has a different front fender, unlike the Enduro-front fender that comes on the XB12X and lower fork protection is not as pronounced as on the XB12X, due to the intended purpose of the XB12XT which is more street than dirt oriented. Other major differences include the suspension which is completely different between the two bikes, being about an inch lower on the XB12XT and tuned more for street riding, vs. the XB12X's slightly taller and softer suspension better tuned for dirt use. Along with factory Hepco & Becker hard panniers and top box, tall windshield and a seat height, the XB12XT also has wheels that are approximately lighter than those found on the XB12X, which have added mass to make them stronger for off paved road use. The XB12XP is a police model that was available for the 2009 model year. XB2 type (different frame with more fuel capacity, longer swing arm & wheelbase, 23.8°/23.5° steering axis angle, more trail) Lightning Long XB12Ss Lightning Super TT XB12STT Ulysses XB12X Ulysses XB12XP Ulysses XB12XT 1125-series (XB3, 2007–2009) 1125R In July 2007, Buell announced the 1125R, a sport bike that departed from Buell's history of using Harley-Davidson Sportster based middle weight powertrains and tapping into the XBRR racing bike learnings. The Rotax Helicon powertrain uses four valves per cylinder, dual over-head cam, liquid-cooled 72 degree V-Twin displacing 1,125 cc and producing . It produces of peak torque