Harddrive 1" Rear Belt - 137t Oe# 40591-07 — Harley-Davidson Sportster 1200 Custom, Forty-Eight, Iron 883 (2007-2021)

Harddrive 1" rear belt with 137-tooth OE profile, engineered with carbon fiber reinforced tension member for V-Twin drive lines. Delivers higher strength and durability than aramid competitors across a wide temperature range.

Features

• Carbon fiber tension member for increased strength
• Specially treated tooth facing resists punctures and debris
• Synthetic rubber teeth deliver low noise and temperature resistance -30°C to +130°C
• Synthetic rubber backing increases flexibility and width stability
• Made in the USA

Specifications

• Brand: Harddrive
• Manufacturer Part #: 21201907
• UPC: 191361537608
• Tooth Count: 137
• Width: 1 inch
• Length: 14 in
• Weight: 3 lbs
• Country of Origin: USA

Fitment

Fits V-Twin motorcycle drive lines requiring a 137-tooth, 1-inch rear belt in OE profile.

Frequently Asked Questions

Is this belt made in the USA?

Yes — Harddrive manufactures this belt domestically with carbon fiber reinforcement.

What temperature range does this belt handle?

The synthetic rubber teeth and backing are rated from -30°C to +130°C, providing performance across extreme conditions.

How does carbon fiber tension compare to aramid?

Carbon fiber delivers higher structural strength than aramid-type belts, reducing stretch and improving durability under demanding V-Twin loads.

What makes this belt resistant to punctures?

The tooth facing fabric receives special treatment to resist cuts, punctures, and debris damage during operation.