Mine was a 1993 KX80 Hinson set up on a custom machined and heat treated main shaft extended and broached to accept the Kawi clutch. In material alone the clutch mod ran over $3000.00. After all the engine work to increase peak horsepower, the super combat clutch with the best parts I could build it...

The triple clamps are 1974 Honda CR250M, tubes, sliders and front hub are 1974 Yamaha YZ250A.

That would be my work. It took hundreds of hours and many thousands of dollars. There is a full feature of it in VMX #20 from 2003. If you have access- all the details are there. Also, on Siege's website there is a spread and an abbreviated story on it. I regretfully sold the bike to a friend of Har...