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SKU:
ZZ3F07421
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135T 1 1/8" Drive Belt 40307-00 Fit Harley-Davidson 2000-2004 FXST 1BHY Softail
$80.39
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$80.39
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
1 1/8 Inch Drive Belt for Harley-Davidson
This 1-1/8 inch drive belt, cross-referenced to OEM part number 40307-00, is a replacement primary drive belt designed for 2000-2004 Harley-Davidson FXST Softail models, transferring power from the engine to the transmission reliably.
Overview
This 1 1/8 inch drive belt 40307-00 is a high-strength primary drive belt made for Harley-Davidson Softail motorcycles, specifically fitting 2000-2004 FXST models. It is engineered to replace a worn or stretched belt, ensuring smooth power delivery from the crankshaft to the clutch. This drive belt is built to match OEM specifications for width, length, and tooth profile.
Built For Performance
- 1-1/8 inch width matches the original OEM belt profile
- High-tensile cord construction for long service life
- Heat-resistant rubber compound designed for engine bay conditions
- Precision-molded teeth provide positive engagement with pulleys
- Cross-referenced to OEM part number 40307-00 for fitment assurance
Fits These Machines
- for Harley-Davidson FXST Softail (2000-2004)
- for Harley-Davidson Softail 1BHY (2000-2004)
On-The-Job Use
- Replaces a cracked or glazed primary drive belt during routine drivetrain service
- Restores proper primary chain tension adjustment range
- Used in complete primary drive rebuilds for softail models
Specs At A Glance
| Part Number(s) | 40307-00 |
| Belt Width | 1-1/8 inch |
| Compatible Brand | for Harley-Davidson |
| Model Compatibility | FXST Softail 1BHY |
| Year Range | 2000-2004 |
Good To Know
Q: Is this belt the same as the original equipment primary belt? A: Yes, the 1-1/8 inch width and tooth count replicate the OEM belt, but it should be verified against the VIN or existing belt part number before fitting.
Q: How often should a primary drive belt be replaced? A: Inspect it at every service interval, and replace if it shows cracks, fraying, or excessive stretch, typically after 20,000 to 30,000 miles under normal use.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.