Ultima 8mm Belt Drive Kit for Harley Big Twin 1965-1978

The Ultima 8mm Belt Drive Kit is a complete upgrade for Harley-Davidson Big Twin motorcycles, designed for kick and electric start configurations on open or closed primary drives and 4-speed models from 1965 through 1978. It features an 8mm x 1-1/2 inch belt and is built to deliver precise power transfer with parts selected for compatibility across mid‑century Harleys.

• Includes front pulley, rear pulley, belt, motor nut, Big Fixx bearing kit, and Sifton clutch spring set
• Accessory items: Acorn Engine Sprocket Nut (7816-1), BDL Belt Drive Round Dog Set (20-0929), BDL Front Engine Nut (20-0927), BDL Front Outer Belt Guide (20-0926)
• Compatible with stock-type or V-Twin power clutches
• Made in China with durable, precision-engineered components
• Designed to fit Harley models from 1965–1978 (4-speed Big Twin) with open or closed primary configurations

Fitment highlights include Harley-Davidson FL 1965–1978 and FX 1971–1978, covering the mid-1960s to late-1970s range for a broad set of open and closed primary setups.

Installation is designed to be straightforward, with components chosen for optimal compatibility, supplying a complete, professional belt-drive upgrade to enhance drive performance and longevity for restored or customized Harleys.

Ultima 8mm x 1-1/2 inch belt drive kit is kick and electric start type for open or closed primary's. For 4-speed Big Twin models.

Upgrade your Harley Davidson with the Ultima 8mm Belt Drive Kit, designed for a seamless fit and reliable performance on models from 1965 to 1978. This comprehensive kit includes a front pulley, rear pulley, high-quality belt, motor nut, Big Fixx bearing kit, and a Sifton clutch spring set, providing all essential components for a complete belt drive upgrade. The kit is compatible with stock type or V-Twin power clutches, ensuring versatility across various Harley models. Crafted in China, this belt drive kit offers durability and precision engineered parts to enhance your motorcycle's power transfer and riding experience. Whether you're restoring or customizing, this kit provides a straightforward installation with components specifically chosen for optimal compatibility. Included accessory items like the acorn engine sprocket nut, belt drive round dog set, and belt guide make the installation process more efficient, reducing downtime and ensuring a professional result. Designed to fit multiple Harley Davidson models from the mid-1960s through the late 1970s, this kit is an excellent choice for riders seeking improved drive performance and longevity. Trust Ultima’s reputation for quality motorcycle parts to keep your Harley running smoothly for years to come.

Features:

• Includes front pulley, rear pulley, belt, motor nut, Big Fixx bearing kit, and Sifton clutch spring set

• Compatible with stock type or V-Twin power clutches

• Made in China with durable, precision-engineered components

• Designed for Harley Davidson models from 1965 to 1978

• Complete kit for a professional and reliable belt drive upgrade

• Accessory Items: 7816-1 - Acorn Engine Sprocket Nut, 20-0929 - BDL Belt Drive Round Dog Set, 20-0926 - BDL Front Pulley Outer Belt Guide, 20-0927 - BDL Belt Drive Front Engine Nut

Fitment:
Harley Davidson FL 1965
Harley Davidson FL 1966
Harley Davidson FL 1967
Harley Davidson FL 1968
Harley Davidson FL 1969
Harley Davidson FL 1970
Harley Davidson FL 1971
Harley Davidson FL 1972
Harley Davidson FL 1973
Harley Davidson FL 1974
Harley Davidson FL 1975
Harley Davidson FL 1976
Harley Davidson FL 1977
Harley Davidson FL 1978
Harley Davidson FX 1971
Harley Davidson FX 1972
Harley Davidson FX 1973
Harley Davidson FX 1974
Harley Davidson FX 1975
Harley Davidson FX 1976
Harley Davidson FX 1977
Harley Davidson FX 1978