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for Big Twin 1936-1954

When it comes to belt drive systems you don’t want to make compromises, because dependability is what counts most here. The tried and tested BDL beltdrive systems range among the highest quality drive train products available for the Harley-Davidson aftermarket.

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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 BDL; for open or closed applications; fits Big Twin 1936-1954; 132 tooth belt; width: 1-1/2”; kickstart only; sprocket shaft type: tapered; pitch: 8 mm; number of teeth: 39 x 62
W&W# Picture net price* Available from warehouse Germany?
81-010 for Big Twin 1936-1954 $452.65 kit
in stock
* United States of America: Tax free shipping. Please check your local import fees.

Spare parts:

  • 81-050

    81-050 Primary belt by BDL; for BDL belt drives with 39 x 62, 41 x 61, 40 x 62 pulleys; fits 4-speed Big Twin 1979-1984; fiber glass/rubber compound, + .030” ...


  • Acorn Style Pulley Nut

    Acorn Style Pulley Nut Decorative acorn style nut to hold the pulley on the sprocket shaft. Recommended for open primary belt drives.

  • Pulley Nuts

    Pulley Nuts Genuine Primo sprocket shaft nuts and washers for the front belt pulley.

  • 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.

  • Barnett Friction Disc Set

    Barnett Friction Disc Set

  • The Tamer

    The Tamer The »Tamer« solves a problem that Harley riders know since 1941. The design of the stock clutch hub bearing permits lateral movement of the clutch shell. This ...

  • Clutch Retainer

    Clutch Retainer This retainer is designed to hold the clutch shell in place, permitting more clearance between the clutch discs, and allowing complete and positive ...

  • Big Fix Clutch Hub Bearing

    Big Fix Clutch Hub Bearing The Big Fix bearing kit replaces the prehistoric caged roller bearings and solves clutch hub bearing problems in a flash. It eliminates chatter and creeping as ...

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