Upgrade your drivetrain with the Belt Drives Ltd Primary Belt, engineered for reliable power transfer and exceptional durability. Built to precise manufacturing standards, it delivers smooth performance and reduced maintenance compared to traditional chain drives.

Featuring an 11mm pitch and a 38.1mm (1-1/2") width, this replacement primary drive belt ensures optimal engagement and long-lasting strength under demanding riding conditions.

Fits Harley-Davidson Big Twin kick-start and electric-start models from 1936 through 1984

Key Features

Highlights

• Durable replacement primary drive belt by Belt Drives Ltd
• 11mm tooth pitch designed for secure engagement
• 38.1mm (1-1/2") width engineered for robust power transmission
• Direct replacement for part number 1185 / cross reference 438896

Sizing & fit

Designed for primary drive systems utilizing an 11mm pitch and a 38.1mm (1-1/2") wide belt configuration.