1.34" OD Drive Roller with 12mm x 1.50 right hand Male threads.
This Drive roller is Heat Treated and Zinc Plated. Uses 5/8" bearings on both ends.
If you want to use this drive roller with the smaller 54 mm ID clutch drum you may have to grind off about a 1/8" of the threads.
Below is a lot of good info and fast links:
This is to be used with the larger 78mm Clutch Drum with the 12mm x 1.5 right hand female threads.
The clutch drum is Not included. If you need one click on the link below.
78 mm ID Clutch Drum - Bell with 12mm x 1.50 female right hand threads
Engine Spacers: This is the part that fits between the engine and the Black Alum. Channel where the four bolts attach the channel to the engine.
78mm Kits use: Spacer Engine for all our Friction Drive kits 76 mm Clutch Rotor
If you need Bearings click on one the links below:
Standard Quality Bearing Made In China:
5/8" ID x 1-3/8" OD x 7/16" wide with retaining ring High Speed Ball Bearing 49950-2HR
How to install a Drive Roller with a 54 mm ID Clutch Drum
How to install a Drive Roller with a 78 mm ID Clutch Drum