ALTO Diaphram Spring - Dished BIG Twin 1984-1989 — Harley-Davidson Electra Glide Classic, Tour Glide Classic, Softail (1984-1989)

ALTO dished diaphragm spring for Big Twin clutches, engineered to provide consistent pressure plate engagement across model years 1984–1989. Direct replacement for stock clutch assemblies requiring spring renewal.

Features

• Dished design for Big Twin clutch pressure plates
• OEM-equivalent specifications
• 6 in x 6 in platform
• 0.7 in compressed height

Specifications

• Brand: ALTO
• Manufacturer Part #: 026767
• Length: 6 in
• Width: 6 in
• Height: 0.7 in
• Weight: 0.47 lbs

Fitment

Fits Harley-Davidson Big Twin clutches, model years 1984–1989.

Frequently Asked Questions

Will this fit my 1990+ Big Twin?

No — this spring is engineered specifically for 1984-1989 Big Twin clutch assemblies. Later models use different diaphragm springs.

Is this a direct replacement for the stock spring?

Yes. It's OEM-equivalent and installs directly into the pressure plate assembly without modification.

What does the dished design do?

The dished geometry maintains consistent spring pressure across the pressure plate, improving clutch engagement feel and durability.

Do I need to replace the entire clutch?

No — the diaphragm spring alone can be replaced if the rest of the clutch assembly is in good condition. Compare wear on the friction disc and pressure plate before ordering.