✓ VERIFIED
Dec 15, 2015
This spring is at least 20% stronger than the stock spring!!
ALTO
SKU: 810-4003
ALTO Dished Diaphragm Spring - Harley Big Twin 1984-1989
$22.95
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About ALTO
ALTO parts and accessories are stocked at Vtwinbikers for Harley-Davidson and Indian Motorcycle applications. Every ALTO item we list is new and sourced through authorized distribution. If you are not certain a part matches your year and model, use Shop by Bike or email our team before you order and we will confirm fitment first.
The ALTO Dished Diaphragm Spring is a critical component for maintaining optimal clutch performance in your 1984-1989 Harley-Davidson Big Twin. Engineered as a direct replacement, this spring ensures consistent pressure plate engagement, which is vital for smooth shifts and reliable power transfer. It's a precision-made part designed to meet or exceed OEM specifications.
Why riders pick this
- Consistent pressure plate engagement
- Direct OEM-equivalent replacement
- Dished design for optimal pressure distribution
- Enhances clutch feel and durability
- Engineered for Harley Big Twin clutches
When you're rebuilding or servicing the clutch on your vintage Harley Big Twin, every component matters for a responsive feel and durable operation. This ALTO dished diaphragm spring is specifically designed for the 1984-1989 model years, providing the correct tension and geometry for your clutch assembly. Its dished design helps distribute pressure evenly across the clutch plate, preventing hot spots and ensuring a longer clutch life. Don't compromise on clutch feel; choose a spring engineered for your specific application.
Engineered for Consistent Clutch Performance
- Dished design provides consistent pressure plate engagement
- Direct replacement for stock Big Twin clutch assemblies
- Meets OEM-equivalent specifications for reliable fit and function
- Helps maintain smooth clutch operation and power delivery
- Designed for durability in demanding V-twin applications
Restore Your Big Twin's Clutch Feel
A worn or incorrect clutch spring can lead to a spongy clutch lever, inconsistent engagement, or premature clutch wear. Replacing it with an ALTO Dished Diaphragm Spring ensures that your Harley-Davidson Big Twin's clutch operates as it should, giving you confidence in every shift. This is an ideal upgrade during a clutch service or rebuild, providing a renewed and precise feel that riders appreciate.
Specifications
- Brand: ALTO
- Manufacturer Part #: 026767
- Length: 6 in
- Width: 6 in
- Height: 0.7 in
- Weight: 0.47 lbs
Common questions
Will this diaphragm spring fit Big Twin models newer than 1989?
No, this ALTO Dished Diaphragm Spring is specifically engineered for Harley-Davidson Big Twin clutches from 1984-1989. Later models use different clutch spring designs.
Is this spring a direct replacement for my stock clutch spring?
Yes, this ALTO spring is designed to be an OEM-equivalent direct replacement and installs without modification into compatible Big Twin clutch pressure plate assemblies.
What is the benefit of the dished design for this clutch spring?
The dished geometry of the spring helps to maintain consistent and even pressure across the clutch pressure plate, which contributes to improved clutch engagement and overall durability.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | ALTO |
| TYPE | Clutch |
| SKU | 810-4003 |
| WEIGHT | 0.47 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
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