APM Clutch Upgrade Kit - `1990-1997 BT `1991-2020 XL — Harley-Davidson (1990-2020)

APM Clutch Upgrade Kit is a complete friction and drive plate set with a 15% stiffer diaphragm spring, adding one extra clutch plate for improved grab and holding power. Made in the USA, this kit fits 1990–1997 Big Twin and 1991–2020 Sportster models with pre-measured stack height for direct installation.

Features

• 15% stiffer diaphragm spring replaces stock
• Adds one extra clutch plate for more grab
• 9 friction plates and 8 tempered steel drive plates
• Pre-measured stack height for proper engagement
• Made in the USA

Specifications

• Brand: APM
• Manufacturer Part #: 1048-0026
• Length: 7.5 in
• Width: 6.75 in
• Height: 2.5 in
• Weight: 2.3 lbs

Fitment

Fits Harley-Davidson Big Twin models 1990–1997 and Sportster models 1991–2020.

Frequently Asked Questions

Will this improve my clutch holding power?

Yes — the extra friction plate and 15% stiffer spring provide better grab, especially useful for heavy loads or aggressive riding.

Do I need to adjust anything after installation?

The stack height is pre-measured, so installation is straightforward. Follow the factory clutch cover torque specs.

Will this fit my 1998+ Big Twin?

No — this kit is for 1990–1997 Big Twin models. 1998-up Harley uses a different clutch architecture.

Can I use this on a stock motor or do I need modifications?

Direct fit into stock Big Twin and Sportster clutch baskets — no frame or engine mods required.