NOS Vintage EBC CSK91 Heavy Duty Clutch Spring Kit Yamaha YZF R1 (Set of 6)
NOS Vintage EBC CSK91 Heavy Duty Clutch Spring Kit Yamaha YZF R1 (Set of 6)
NOS Vintage EBC CSK91 Heavy Duty Clutch Spring Kit Yamaha YZF R1 (Set of 6)
NOS Vintage EBC CSK91 Heavy Duty Clutch Spring Kit Yamaha YZF R1 (Set of 6)
NOS Vintage EBC CSK91 Heavy Duty Clutch Spring Kit Yamaha YZF R1 (Set of 6)
NOS Vintage EBC CSK91 Heavy Duty Clutch Spring Kit Yamaha YZF R1 (Set of 6)

NOS Vintage EBC CSK91 Heavy Duty Clutch Spring Kit Yamaha YZF R1 (Set of 6)

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  • $15.99
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NOS Vintage EBC CSK91 Heavy Duty Clutch Spring Kit Yamaha YZF R1 (Set of 6)

Item Specifics

Field Value
Brand EBC Brakes
Manufacturer Part Number CSK91
Type Heavy Duty Clutch Spring Kit (10%–15% Stiffer Than OEM)
Placement on Vehicle Engine / Clutch Assembly
Quantity Set of 6 Coil Springs
Fitment Yamaha YZF-R1 (1998–2003)
Condition New Old Stock (NOS)

Item Description

New Old Stock EBC CSK91 Heavy Duty Motorcycle Clutch Spring Set (6 Springs)

Up for sale is an original New Old Stock (NOS) set of EBC heavy-duty clutch springs, part number CSK91. EBC performance clutch springs are spiral wound from heat-treated high-carbon steel and engineered to be approximately 10–15% stiffer than OEM springs. This helps prevent clutch slippage under hard acceleration and provides a positive lever feel.

Compatible Models Include:

  • Yamaha YZF-R1: 1998–2003

Condition Notes:

  • Status: New Old Stock in original factory blister packaging.

  • Packaging Wear: Original card backing shows light aging and minor shelf wear from long-term storage.

  • Contents: Complete unused set of 6 coil springs sealed inside the clear plastic bubble.

Please verify part number CSK91 matches your specific motorcycle application prior to purchase. selling as pictured 100626gp