Home Shop Primary Belt Drive Kits Primo 8 mm 3” Belt Drives for 4-Speed Big Twin
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Primo 8 mm 3” Belt Drives for 4-Speed Big Twin

Primo belt drives are developed and manufactured by Harley riders for Harley riders. Before the first Primo belt drive was sold, the belt drive systems had been tested on a Top Fuel drag bike until they would stand up to the strain. Each kit consists of the complete belt drive unit, a sprocket shaft nut, all necessary hardware and detailed installation instructions.

These are 3” versions for open applications.

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Due to various circumstances (improper selection, installation and maintenance) and applications under which belt drives are used, W&W Cycles is not liable for damaged belts.
Dry clutches generate noises when the clutch is disengaged. The noise level depends on condition and construction of the clutch plates. If the primary drive is run open (i.e. without primary housing), these noises can be heard.
Belt drive by Rivera Primo; for open applications; width: 3”; kickstart only; pitch: 8 mm; USA
W&W# Picture net price* Available from warehouse Germany?
80-100 Primo 8 mm 3” Belt Drives for 4-Speed Big Twin fits Big Twin 1936-1954; number of teeth: 47 x 76 $661.92 kit
in stock
80-110 Primo 8 mm 3” Belt Drives for 4-Speed Big Twin fits 4-speed Big Twin 1955-1984; number of teeth: 47 x 76 $622.13 kit
in stock
* United States of America: Tax free shipping. Please check your local import fees.

See also:

  • Transmission Adjuster Custom

    Transmission Adjuster Custom Dual adjuster for 4-speed transmissions 1936-64 (tin primary) and 4-speed transmissions thru 1984 with open primary drives.

Have any questions?

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