DRIVE TRAIN SECTION RED PART NUMBERS INDICATE NEW PARTS 7-68 1 2 3 4 5 6 7 8 9 10 11 CONTENTS REFERENCE GENERAL EXHAUST FUEL DRIVE TRAIN ENGINE WHEEL CONTROL FRONT END FRAME ELECTRICAL Belt Drive Kits Model,Year & Description Part # Big Twin 4 speed 1970/1984 with rear chain, 45-68 tooth combo 77028 Model,Year & Description Part # Softail Late 1985/1989 with tapered clutch hub and rear belt drive, 45-68 tooth combo 77005 Softail and Dyna 5 speed models 1990/2006 with spline clutch hub, 45-68 tooth combo* 77023 FLT and FXR models Late 1985/1989 with tapered clutch hub and rear belt drive, 48-68 tooth combo 77029 FLT, FLHR and FXR 5 speed models 1990/2006 with spline clutch hub, 48-68 tooth combo* 77031 *Includes the earlier style heavy duty 66 tooth starter ring gear and a matching 9 tooth starter pinion gear Description Part # 1 1/2” wide Kevlar Reinforced Belt fits 45-68 tooth combination - 138 teeth 77548 1 5/8” wide Kevlar Reinforced Belt fits 45-68 tooth combination - 138 teeth 77511 1 5/8” wide Kevlar Reinforced Belt fits 48-68 tooth combination - 130 teeth 77533 Front pulley, 45 tooth 1 5/8” wide. Includes inner and outer belt guides. Fits 77005 & 77023 77431 Sealed Primary Bearing fits all of the above belt drive kits (except kit 77028) 78500 1 1/2” Wide Belt Drive Kit Chuck the chain and bolt in the belt for a smoother ride with this 8mm Enclosed Primary Belt Drive Kit from Belt Drives Limited. Designed for use without modification to the inner primary cover, these bolt-in kits feature cylindrical shaped, replaceable round clutch dogs, which can withstand 1,200 pounds of torque. The inner stressproof steel hub is designed to move the weight of the clutch basket inward over the mainshaft 1” (see inset picture), which distributes the weight more evenly on the mainshaft. To ensure a low rotating weight and provide long life, both the front and rear pulleys are made of lightweight aluminum and are hard anodized. Rounding out these kits are a set of Kevlar® clutch plates that provide 60% more surface area than the OE clutch, and a Kevlar® belt for positive performance. If more clutch plate pressure is needed, the pressure plate is designed to accept up to 6 more clutch springs if required. Each kit includes a sealed primary bearing (except kit 77028). A primary bearing seal is also included for those who don’t want to change the OEM nonsealed style bearing. Change over today for a smoother, quieter ride. For replacement parts, see 7-78 for clutch and starter ring gear. 8MM BOLT-IN ENCLOSED PRIMARY BELT DRIVE KITS WITH CLUTCH FOR BIG TWIN 4 & 5 SPEED MODELS Brand X Clutch Hub BDL Inner Clutch Hub Round Clutch Dogs No modification is required to the inner primary for installation. Sealed Primary Bearing included 78500 Note: Due to the numerous variables of misalignment and improper tensioning upon installation, there is no warranty on belts. REPLACEMENT PARTS 1 5/8” Wide Belt Drive Kits
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