11MM/1.5 INCH PRIMARY BELT DRIVE – KICK START – SPLINE SHAFT – 1965-E1984 HARLEY-DAVIDSON BIG TWIN

Open Primary Belt Drive | The 11mm/1.5-inch Primary Belt Drive for 1965 to early 1984 Harley-Davidson Big Twin models is a popular aftermarket upgrade for classic Harley-Davidson motorcycles. Designed for use with kick-start models and spline shaft transmissions, this belt drive replaces the traditional primary chain, offering improved performance and reliability.

Key Features | Buy Open Primary Belt Drive Online

1. 11mm/1.5-inch Belt Size:
   • The 11mm pitch and 1.5-inch width provide a strong, durable belt capable of handling the torque and power of a Big Twin engine.
   • Narrower than some other belt drive setups, it fits within the original primary cover and retains a classic look.
2. Kick-Start Compatibility:
   • Specifically designed for kick-start models, allowing for the traditional starting method while benefiting from the belt drive’s advantages.
   • Maintains the original kick-start function without needing modifications to the primary cover.
3. Spline Shaft Fitment:
   • Designed for spline shaft transmissions used on 1965 to early 1984 Harley-Davidson Big Twin models (like Shovelheads).
   • Ensure your bike is equipped with the correct spline shaft transmission to guarantee a proper fit.
4. Advantages over Chain Drives:
   • Reduced Maintenance: Belt drives require less frequent adjustment and lubrication compared to chains.
   • Quieter Operation: The belt provides smoother and quieter operation, which is especially beneficial for vintage motorcycles.
   • Increased Reliability: Belts are less prone to stretching or breaking than chains, offering better durability under load.
5. Material:
   • Made from high-strength composite materials and reinforced with Kevlar or other fibers for durability and resistance to wear.
   • The drive pulley and clutch basket are typically constructed from aluminum or steel for improved longevity.

Installation Considerations:

• Primary Cover: This belt drive setup is designed to fit within the original primary cover for 1965-E1984 Harley Big Twins. In some cases, slight modifications may be required for optimal fitment.
• Clutch Basket and Pulley Alignment: Proper alignment of the clutch basket and front pulley is crucial for belt longevity and smooth operation.
• Ventilation: If using an open primary configuration, ensure that the belt and components are properly ventilated to avoid overheating.

Suitability:

• Ideal for riders who want to upgrade the reliability and performance of their classic Harley while maintaining the original kick-start functionality.
• Suitable for custom builds where reducing the weight of the primary drive and achieving a cleaner look are desired.

This belt drive setup provides a blend of modern performance with a classic feel, making it a favorite among Shovelhead enthusiasts and custom builders.

BDL’s 11mm belt drives have been around for many years. Most belt drive enthusiasts still think that these are the best size and combination for all around riding and dependability. This drive adapts your stock clutch directly into the belt drive clutch basket, or you can upgrade your clutch to BDL’s Competitor clutch for 30% more clutch surface than stock. Fits 1965-1984 Shovelhead kick start models. See Additional Information below for fitment.

• Pulley And Clutch Basket Are Hard Anodized Aluminum; Front Pulley Is Drilled And Tapped For Easy Removal
• Inner Clutch Hub And Plates Are Not Included; Must Be Purchased Separately
• Made In The U.S.A.NOTE: For enclosed use only, NOT for open belt drive.