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EBC Clutch Spring Kit - CSK901

EBC Clutch Spring Kit - CSK901

EBC Brakes CSK Series Heavy Duty Clutch Spring Kits are approximately 10 to 15 percent stiffer tha...

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eBayCSK901 EBC Clutch Spring Kit Diaphragm Type (2Pc Per Set)
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Product Information

Full details

The EBC Clutch Spring Kit CSK901 is designed for motorcycle enthusiasts and mechanics looking to restore or improve clutch performance by replacing worn-out factory components. These springs provide a critical upgrade by offering 10 to 15 percent more tension than standard OE springs, effectively eliminating clutch slip and enhancing power transfer. While these springs are significantly more robust, users should be aware that they provide higher tension, which may result in a slightly firmer lever pull compared to stock components.

All features

Model Part NumberCSK901
BrandEBC

Extended Product Information

FAQs

Will this fit my specific motorcycle?

The CSK901 is a specific part number. Please verify your bike's compatibility using the EBC part finder or your service manual before purchase.

Do I need to replace my clutch plates at the same time?

While not strictly required, it is highly recommended to inspect your friction plates for wear whenever you perform a spring upgrade.

How much stiffer will the lever feel?

You will notice an increase in tension, but the 10-15% margin is designed to be manageable for most riders without causing excessive hand fatigue.

Are these springs sold individually?

No, these are sold as complete engine sets to ensure even tension across the entire clutch assembly.

Can these be used for racing applications?

Yes, their heat-resistant, high-tension design makes them an excellent choice for street and light track use.

Troubleshooting

Clutch feels excessively stiff after installation

Verify that springs are seated correctly in the clutch basket and that no debris is obstructing the spring cups.

Clutch continues to slip after replacing springs

Check the friction plates for wear or glazing; if plates are near their service limit, they may need to be replaced alongside the springs.

Difficulty engaging or disengaging the clutch

Re-adjust the clutch cable free-play to account for the increased tension of the heavy-duty springs.

Pros and Cons

Pros

  • Significantly reduces clutch slip under high-load conditions
  • Provides more reliable power delivery
  • Complete set ensures uniform tension across the clutch basket
  • High-quality materials resist fatigue from heat cycles

Cons

  • Slightly heavier lever pull than stock springs
  • Requires full clutch cover removal for installation
  • Not intended for riders seeking the lightest possible clutch action

Setup, Compatibility & Care

Installation of the CSK901 requires access to the clutch basket, typically necessitating the draining of engine oil and removal of the clutch cover. It is recommended to perform this installation during a clutch plate service or rebuild. Always inspect the clutch basket for 'notching' or grooving before installing new springs, as a damaged basket can cause the new springs to bind. Ensure that the bolts securing the spring pressure plate are tightened to the manufacturer's specified torque values using a star pattern to maintain even pressure. We suggest monitoring your clutch cable tension after installation, as the firmer springs may change the feel of the engagement point.

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