Harddrive Transmission Sprocket - 25t BIG Twin 6 Speed 2006-2022 — Harley-Davidson (2007-2017)

Harddrive 25-tooth transmission sprocket for Big Twin 6-speed engines, 2006-2022. Precision-machined with hardened teeth for durability and direct OEM replacement fit.

Features

• Precision machined with hardened teeth
• OEM replacement spec
• 1/2" offset available for wider tire clearance
• Direct fit Big Twin 6-speed transmission

Specifications

• Brand: Harddrive
• Manufacturer Part #: 191318
• UPC: 191361169304
• Teeth: 25
• Weight: 1.88 lbs
• Country of Origin: China (Taiwan)

Fitment

Fits Harley-Davidson Big Twin models with 6-speed transmission, 2006-2022 model years.

Frequently Asked Questions

What size is this sprocket?

This is a 25-tooth sprocket for Big Twin 6-speed transmissions.

Is this an OEM replacement?

Yes — Harddrive manufactures this as a direct OEM replacement sprocket with hardened teeth for long service life.

Can I use offset sprockets to fit a wider tire?

Yes — offset sprockets are available in 1/2" to allow wider tire installation without modifying the primary or transmission.

Will this fit my 2023+ Big Twin?

This part is listed for 2006-2022 Big Twin 6-speed models. Check with your dealer for 2023-up fitment, as engine updates may require a different part number.