Harley Davidson Belt Size Chart information is essential for ensuring performance, safety, and the long life of your ride. A properly sized and maintained belt keeps power delivery smooth, prevents strain on the transmission, and reduces the risk of breakdown.
Harley Davidson models—including Softail, Touring, Sportster, Dyna, V-Rod, and Street—each have specific belt sizes, which can even vary within the same series depending on year and pulley configuration.
In this guide, you’ll get accurate belt size tables for every major model series, plus real-world tips from my own riding and maintenance experience. Whether you’re replacing a worn belt or preparing for a long ride, you’ll find exactly what you need to choose the right one with confidence.
Why Knowing the Correct Harley Davidson Belt Size Matters
Many riders underestimate how critical the drive belt is to their motorcycle’s performance. Unlike a chain drive, which can be adjusted more frequently, a belt drive requires precision in size and tension. Choosing the wrong size can lead to:
- • Power loss due to slippage or misalignment
- • Increased wear on transmission and pulley teeth
- • Noise and vibration that affect riding comfort
- • Shortened belt lifespan from constant stress
- • Potential safety hazards if the belt snaps at high speed
From my experience, riding long-distance with a belt that’s just slightly off in size can result in gradual transmission damage. It might feel fine for the first few hundred miles, but the stress it places on the pulleys and bearings adds up fast.
Key Terms to Know Before Using the Chart
Understanding a few technical terms will make it easier to read and apply the belt size charts.
Belt Width
The physical width of the drive belt, measured in inches or millimeters. This must match the spacing of your pulleys.
Number of Teeth
Refers to the number of molded teeth on the belt, which mesh with the pulley grooves for power transfer.
Pulley Ratio
The configuration of the front (engine) and rear (wheel) pulley teeth count, such as 32/70. This affects torque and speed.
Drive Belt
A reinforced rubber belt, often made with carbon fiber or Kevlar strands for strength, used to transfer power from the engine to the rear wheel.
Tension
The amount of tightness applied to the belt, measured in deflection under a specific load. Too loose causes slippage; too tight causes wear.
How to Use This Belt Size Chart Effectively
To ensure you’re getting the correct belt for your Harley Davidson:
- • Identify your motorcycle’s exact model and production year
- • Check pulley configuration, as some models with the same year have different setups
- • Confirm whether your belt width is measured in inches or millimeters
- • Match the number of teeth exactly; even one tooth off can cause fitment issues
- • Cross-check if your model has had pulley upgrades or aftermarket modifications
If you’ve bought your bike second-hand, never assume the current belt is the original size. Previous owners may have changed pulleys or swapped in a different belt, so it’s worth verifying with the chart below.
Harley Davidson Drive Belt Size Charts by Series
Below are detailed charts for each major Harley Davidson series, covering belt width, number of teeth, pulley configuration, and notes for variations. All sizes are based on original factory specifications—perfect for restoration, maintenance, or performance tuning.
Harley Softail Series Belt Sizes
| Model Name | Production Year | Belt Width | Number of Teeth | Pulley (Front/Rear) | Notes |
|---|---|---|---|---|---|
| FXST, FLST | 1995–1999 | 1-1/2″ | 130 | 32/70 | Wide belt classic fit |
| FXST, FLST | 1994 | 1-1/2″ | 132 | 32/70 | Slightly longer belt than later years |
| FXS, FLST | 1993 | 1-1/2″ | 128 | 32/61 | Lower rear pulley tooth count |
| FLST | 2000–2006 | 1-1/8″ | 135 | 32/70 | Narrower belt from 2000 onward |
| FXST | 2006 | 20mm | 135 | N/A | Metric width introduced |
| FXST | 2000–2005 | 1-1/8″ | 135 | 32/70 | Common aftermarket replacements |
| FLST/C/N, FLSTSC, FXSTD, FXCW/C, FXS | 2007–2011 | 1″ | 133 | 32/66 | Sportier gearing |
| All Softails | 2018–2020 | 24mm | 134 | 32/66 | Latest generation specs |
| Softail, FXST, FLS, FLST | 2012–2016 | 24mm | 133 | 32/66 | Compatible across these years |
| FXST/B/C, FLSTF, FLSTSB | 2007–2011 | 20mm | 133 | 32/66 | Metric width belt |
| FXST, FLST | 1986–1992 | 1-1/2″ | 132 | 32/70 | Early-generation design |
| Breakout FXSB | 2014–2017 | 1-1/2″ | 132 | 32/66 | Wider belt for high torque |
| Breakout FXSB, FXSB 103 | 2014 | 24mm | 132 | 32/64 | Slightly different gearing |
Harley Touring Series Belt Sizes
| Model Name | Production Year | Belt Width | Number of Teeth | Pulley (Front/Rear) | Notes |
|---|---|---|---|---|---|
| All Touring models | 2015–2020 | 24mm | 140 | 32/68 | Latest touring configuration |
| All Touring models | 2009–2014 | 1″ | 140 | 32/68 | Slightly narrower but same tooth count |
| FLHT/R/X, FLTR | 2007–2008 | 1″ | 137 | 32/66 | Transition gearing before 2009 update |
| FLHT, FLHR, FLTR | 2004–2006 | 1-1/8″ | 139 | 32/70 | Higher rear pulley teeth for cruising |
| FLT, FLHT, FLHR | 1997–2003 | 1-1/2″ | 139 | 32/70 | Heavy-duty touring belt |
| FLT, FLHT | 1985–1996 | 1-1/2″ | 136 | 32/70 | Early-generation touring design |
Harley Sportster Series Belt Sizes
| Model Name | Production Year | Belt Width | Number of Teeth | Pulley (Front/Rear) | Notes |
|---|---|---|---|---|---|
| XL 883L, XL 883N, XL1200C, XL1200T, XL1200X, XL1200NS | 2008–2020 | 1″ | 137 | 29/68 or 30/68 | Pulley variations for torque vs speed |
| XL 1200, XR 1200 | 2007–2014 | 1″ | 137 | 32/66 | Performance-oriented setup |
| XL 883 | 2011–2014 | 1″ | 137 | 32/66 | Standard gearing |
| XL 883 | 2007–2010 | 1″ | 136 | N/A | Minor tooth reduction |
| XL 1200 R/C | 2004–2006 | 1-1/8″ | 137 | 29/68 | Wider belt for higher torque |
| XL 883, 883C | 2004–2006 | 1-1/8″ | 136 | 28/68 | Lower gearing for quicker acceleration |
| XL | 1991–2003 | 1-1/8″ | 128 | 29/61 | Older generation compact belt |
Harley Dyna Series Belt Sizes
| Model Name | Production Year | Belt Width | Number of Teeth | Pulley (Front/Rear) | Notes |
|---|---|---|---|---|---|
| FXD, FXDWG | 1991–1999 | 1-1/2″ | 133 | 32/70 | Strong wide-belt configuration |
| FXD, FXDWG | 2000–2006 | 1-1/8″ | 133 | 32/70 | Narrower belt for lighter handling |
| All Dyna models | 2007–2017 | 1″ | 131 | 32/66 | Final production spec for Dyna series |
Harley V-Rod Series Belt Sizes
| Model Name | Production Year | Belt Width | Number of Teeth | Pulley (Front/Rear) | Notes |
|---|---|---|---|---|---|
| VRSCR | 2007 | 1-3/8″ | 149 | N/A | Rare model spec |
| VSRC | 2007–2017 | 1″ | 151 | N/A | Metric belt in later years |
| VRSC | 2004–2006 | 1-3/8″ | 149 | N/A | High torque model |
| VRSC | 2002–2003 | 1-3/8″ | 150 | N/A | Early V-Rod setup |
Harley Street Series Belt Sizes
| Model Name | Production Year | Belt Width | Number of Teeth | Pulley (Front/Rear) | Notes |
|---|---|---|---|---|---|
| XG750A | 2017–2020 | 1″ | 168 | N/A | Longest belt in Harley lineup |
| XG500, XG750 | 2015–2020 | 1″ | 166 | N/A | Compact street-focused design |
Practical Tips for Harley Davidson Belt Care
From my own time maintaining Harleys, I’ve learned that keeping a belt in top shape is far easier than replacing one unexpectedly. A few minutes of inspection after every couple of rides can save you hundreds in repair costs and keep your bike running smoothly.
- • Inspect regularly – Check for cracks, fraying edges, missing teeth, or shiny spots that indicate slippage.
- • Check tension – Use a belt tension gauge or follow Harley’s manual for deflection measurements.
- • Clean carefully – Remove road grime with mild soap and water; avoid harsh chemicals that can weaken the belt’s composite materials.
- • Avoid overloading – Carrying heavy loads or accelerating aggressively puts unnecessary strain on the belt.
- • Replace on time – Even if a belt looks fine, replace it at Harley’s recommended intervals, typically every 50,000–70,000 miles depending on usage.
Belt Drive vs Chain Drive for Harley Davidson
Many riders debate whether to stick with the factory belt drive or switch to a chain setup. Each has pros and cons.
Belt Drive Advantages
- • Quieter operation, especially on long rides
- • Minimal maintenance—no lubrication needed
- • Cleaner appearance with no oil fling
- • Longer lifespan when properly maintained
Belt Drive Considerations
- • Higher replacement cost than a chain
- • More difficult to change gearing ratios
- • Not ideal for extreme off-road or racing conditions
Chain Drive Advantages
- • Easier to change sprockets for gearing adjustments
- • Better suited for high-torque, aggressive riding
- • Generally cheaper to replace
Chain Drive Considerations
- • Requires regular cleaning and lubrication
- • Noisier operation
- • Shorter service life compared to belts
From my experience, unless you’re doing heavy customization or extreme riding, Harley’s belt drive system is the better choice for most riders. It keeps the ride smooth and reduces weekend maintenance chores.
Step-by-Step Guide to Replacing a Harley Davidson Belt
When I replaced my first Harley belt, I underestimated the time it would take. Preparation and method matter, so here’s the approach I now recommend:
-
Prepare the workspace
- Place the bike on a secure stand or lift so both wheels are stable.
- Ensure you have access to both sides of the rear wheel.
-
Remove covers
- Take off the outer primary cover with the correct Allen or Torx tools.
- Keep bolts organized for reassembly.
-
Loosen the rear wheel
- Loosen axle nuts and push the wheel forward to relieve belt tension.
-
Remove the old belt
- Slip it off the front and rear pulleys, noting its routing.
-
Install the new belt
- Fit the belt onto the pulleys in the same orientation.
- Ensure teeth are fully seated in pulley grooves.
-
Adjust tension
- Pull the wheel back to achieve the recommended deflection.
- Use a torque wrench to tighten axle nuts to spec.
-
Reinstall covers
- Replace the primary cover and secure all bolts firmly.
-
Test ride
- Listen for abnormal noises and feel for smooth acceleration.
- Recheck tension after 50–100 miles of riding.
Final Thoughts: Harley Davidson Belt Size Chart
Having the correct Harley Davidson belt size is not just a matter of fitting parts—it’s the difference between a flawless ride and an early roadside stop. Whether you ride a Softail, Touring, Sportster, Dyna, V-Rod, or Street model, the information in these charts ensures you can select the right belt with confidence. Combine that with regular inspections, proper tension, and timely replacements, and your Harley will reward you with thousands of miles of trouble-free riding.
If you’re planning a long journey or doing a complete bike restoration, keep this guide handy. Knowing your exact belt size, understanding how to maintain it, and being able to replace it yourself will save you time, money, and headaches down the road.