Harley-Davidson 40307-00 Rear Drive Belt 135 Tooth 1-1/8 In

Direct-fit OEM rear drive belt for Harley-Davidson motorcycles (part number 40307-00), designed to transfer power from the transmission to the rear wheel through the final-drive system. It features 135 teeth and a 1-1/8 inch belt width, and is compatible with Harley-Davidson FLST Fat Boy Deluxe, FXST Softail, and other models that use a 135-tooth final-drive belt. Built from a high-strength reinforced rubber composite, this belt provides durable, dependable power transmission and is intended as a direct replacement during drivetrain servicing or belt replacement. As an OEM replacement, it is commonly used alongside front drive pulley, rear drive pulley, or belt tensioner replacements to restore proper drive tension and drivetrain performance. This is a new Harley-Davidson part designed for final-drive applications.