"1994 Suzuki year code: R 1994 year's GSX1100SR (see picture above) had different technical specifications for the first time since launch in 1981. Even the engine had different character. As the earlier versions had 111 bhp, the new version of the engine was powered down to 95 bhp. The torque was also decreased, from 9.8 kg-m at 6,500 rpm to 8.6 kg-m at 4,000 rpm. The displacement, bore and stroke were still the same but the carburetors different and the oil capacity was increased from 4 liters to 4,2. The ignition advance system became digital. displacement, bore and stroke were still the same but the carburetors different and the oil capacity was increased from 4 liters to 4,2. The ignition advance system became digital. ignition advance system became digital. When decreasing the power output, even the top speed on the speedometer was limited from 240 km/h to 180 km/h. The tank was made smaller, from 22 liters to 19. smaller, from 22 liters to 19. The clutch was now electrically power assisted and the front suspension infinitely adjustable. Rear shocks were updated from traditional upright shockers to modern double tube upside down type shockers with gas chamber attached to the side. chamber attached" it goes on. That's from suzukicycles.org but seeing that you have an 89 I guess that means you know all about the 94's. Didn't know there was a katana expert lurking on here.