Harddrive 24MM Rear Belt - 134t Oe# 40000018 — Harley-Davidson Softail Heritage Classic 114, Softail Fat Boy 114, Softail Fat Bob 114 (2018-2024)

Harddrive 24MM rear belt with 134-tooth profile and OE# 40000018, engineered with carbon fiber reinforcement for V-Twin drivetlines. Synthetic rubber teeth and backing deliver superior strength, low noise, and temperature stability from -30°C to +130°C.

Features

• Carbon fiber tension member for increased strength over aramid
• Specially treated tooth-facing fabric resists punctures and debris
• Synthetic rubber teeth with low noise and temperature resistance
• Synthetic rubber backing increases flexibility and width stability
• Made in the USA

Specifications

• Brand: Harddrive
• Manufacturer Part #: 21192461
• OE Number: 40000018
• Teeth: 134
• Width: 24MM
• UPC: 191361537554
• Length: 14 in
• Width: 14 in
• Height: 2 in
• Weight: 3 lbs

Fitment

Fits V-Twin motorcycles requiring a 24MM rear belt with 134-tooth specification and OE# 40000018.

Frequently Asked Questions

What makes this belt different from aramid reinforced belts?

The carbon fiber tension member provides higher structural strength and durability compared to aramid-type products.

Will this belt work in cold weather?

Yes — the synthetic rubber compound maintains performance between -30°C and +130°C, so it handles winter and summer extremes.

What's the tooth count and width?

This is a 24MM wide belt with 134 teeth, matching OE# 40000018 specification.

Is installation straightforward?

As a direct OE replacement, installation follows standard V-Twin belt swap procedures — no modifications needed.