MTC 2 stage Lockup Clutch for the 89-92 GSXR1100,fitted with the diaphram spring type clutch. The lock up is a method of controlling the power in high horsepower tunes/turbo/nitrous motors. The kit comes with the tunable 'snowflake ' MTC 2 stage lock up , and the neccessary clutch cover spacer. See our other listings for a whole range of performance parts for the oil cooled GSXR1100/750 range.