BDL Primary Drive Replacement 8mm Belt For Harley
BDL 8mm Primary Belts: The Performance Lifeline for Your Drive System
When it comes to aftermarket primary drives, Belt Drives Ltd. (BDL) is the name trusted by custom builders and performance enthusiasts worldwide. A BDL 8mm Replacement Belt is engineered to withstand the punishing torque and high-heat environment of a V-Twin primary. Whether you are running a classic 4-speed Shovelhead or a modern high-horsepower Twin Cam or Milwaukee-Eight, BDL belts provide the reliability needed to keep your bike on the road.
Advanced Construction for Zero Stretch
The core of every BDL belt features high-tensile Kevlar or Fiberglass cords. These materials are chosen for their extreme dimensional stability, ensuring the belt maintains its exact length even under hard acceleration. This stability prevents the belt from “walking” on the pulleys and eliminates the need for constant tension adjustments.
Common 8mm Configurations
BDL offers a wide range of sizes to match specific drive ratios and primary housing lengths:
- 132 Tooth: The standard for most 1-1/2″ and 2″ drives on 4-speed Big Twins. Note that a +.030″ oversize version exists for 1979-1984 models to accommodate factory casting variations.
- 138 Tooth: Common for Softail (1986-2006) and Dyna (1992-2005) 1-5/8″ belt drives.
- 141/142 Tooth: Found on many 2″ and 3″ open primary kits for Softail and custom applications.
- 144 Tooth: Often used in 3″ wide open drives for early Big Twins (1936-E84).
Precision-Molded Tooth Profile
The 8mm pitch is designed for optimum load distribution across the pulley teeth. These teeth are jacketed in a durable, low-friction fabric that reduces heat buildup and noise. This precise fit is critical for open belt drives, where the belt is exposed to the elements and must resist debris while maintaining a clean, high-performance appearance.
Specifications at a Glance
- Pitch: 8mm (Standard for most BDL street kits).
- Materials: Synthetic rubber with Kevlar or Fiberglass reinforcement.
- Widths: 1-1/2″, 1-5/8″, 1-3/4″, 2″, 3″.
- Compatibility: Replacement belt for BDL-brand primary drive kits only.
- Origin: Handcrafted in the USA.
BDL Primary Drive Replacement 8mm Belt For Harley
Belt Drives Limited constructs each and every one of their primary drive belts with exceptional quality to be able to provide the level of strength and performance that you demand for your bike.
Features:
Available in a variety of sizes
8mm Tooth size
Made in the USA
Note: Will not replace Bulls Eye model belts.
| Product Style | J&P Cycles Item # | Catalog Number | Store Sku | MFR. Product # | Availability |
|---|---|---|---|---|---|
| 130 Tooth x 1 5/8″ Wide | 55550 | 604-731 | BDL-130K | In Stock: Ships within 24 hours | |
| 132 Tooth x 1 1/2″ Wide | 55545 | 600-0433 | BDL-30853 ST | In Stock: Ships within 24 hours | |
| 132 Tooth x 1 5/8″ Wide | 55541 | 600-0429 | BDL-132-1-5/8/BDL-132-158 | Only 8 Left: Ships within 24 hours | |
| 132 Tooth x 1 3/4″ Wide | 55539 | 600-0426 | BDL-132 | In Stock: Ships within 24 hours | |
| 132 Tooth x 3″ Wide | 55544 | 600-0432 | BDL-132-3 | In Stock: Ships in 1-2 business days | |
| 138 Tooth x 1 1/2″ Wide | 55538 | 602-704 | 40120 | BDL-138-38K | In Stock: Ships within 24 hours |
| 138 Tooth x 1 5/8″ Wide | 55549 | 600-0428 | 12833 | BDL-138K | In Stock: Ships within 24 hours |
| 140 Tooth x 2″ Wide | 55534 | 600-0424 | 17836 | BDL-140-2 | In Stock: Ships within 24 hours |
| 141 Tooth x 1 5/8″ Wide | 55542 | 602-705 | 12832 | BDL-141-1-5/8 | Only 6 Left: Ships within 24 hours |
| 141 Tooth x 1 3/4″ Wide | 55540 | 600-0427 | BDL-141 | In Stock: Ships within 24 hours | |
| 141 Tooth x 3″ Wide | 55543 | 600-0431 | 40122 | BDL-141-3 | In Stock: Ships within 24 hours |
| 132 Tooth x 2″ Wide | 55537 | 606-931 | BDL-132-2/BDL-132B-KG | In Stock: Ships within 24 hours | |
| 142 Tooth x 2″ Wide | 55535 | 406-339 | BDL-142-2 | In Stock: Ships within 24 hours | |
| 142 Tooth x 69mm Wide | 55536 | 125-866 | BDL-142-69 | In Stock: Ships within 24 hours | |
| 144 Tooth x 1 1/2″ Wide | 55546 | 600-0438 | BDL-37144-1 | In Stock: Ships within 24 hours | |
| 144 Tooth x 2″ Wide | 55547 | 100-2579 | 38649 | BDL-37144-2 | In Stock: Ships within 24 hours |
| 144 Tooth x 3″ Wide | 55548 | 600-0442 | 17837 | BDL-37144-3 | In Stock: Ships within 24 hours |
Fitment Notes & Exceptions
This is a universal fit part; it may or may not fit without modification.
