See more: Multi-Fit Belt Drive Parts
Individual parts, Mainshaft support, Genuine Zodiac
Running an open belt drive on 1970-early 1984 4-speed Big Twin normally means you lose the main shaft support from the inner primary housing. This bearing support is the solution for models with chain final drive. Does not fit Big Twin originally supplied with final belt drive or late 1984-1986 Big Twin originally supplied with a diaphragm clutch.