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Spec Clutch SF521-3 Stage Performance Clutch Kit - 1

(2006-2011 Volvo C30; 1967 Buick Sportwagon)

Manufacturer

Picture for manufacturer Spec Clutch

Part Number

SF521-3
14 reviews
Sale Price

$571.17

Estimated ship date Tuesday, November 24

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Product Details

The Spec Clutch SF521-3 Stage 1 Clutch Kit is a high-performance clutch upgrade engineered for drivers who demand reliable power transfer on the street and at the track. The disc features an integrally molded carbon Kevlar-based organic lining that delivers smooth, progressive engagement along with exceptional service life — even under demanding conditions.

The lining is bonded to a steel backing plate for added structural integrity, maintaining consistent performance under high clamp loads and elevated temperatures. The double-sprung hub incorporates spring cover relieves for drivetrain flexibility, while heat-treated internal components provide long-term strength and durability.

Key Features:

  • Carbon Kevlar-based high-performance organic friction lining for smooth engagement and long life
  • Integrally bonded steel backing for strength under high clamp loads and heat
  • High clamp pressure plate for improved torque transfer
  • Double-sprung hub with spring cover relieves for drivetrain flexibility
  • Heat-treated hub components for lasting strength and durability
  • Multi-compound woven organic disc material with steel backing
  • Includes bearing and installation tool kit

Recommended Driving Applications: Street, Drag, Drift, Road Race, Rallye, Pulling, Autocross

The Spec Stage 1 clutch kit is the ideal choice for street-driven vehicles and lightly modified platforms that see occasional track or off-road use. As part of Spec's proven staged performance lineup — ranging from Stage 1 street kits through Stage 5 race-only units — the SF521-3 sits at the entry point of performance upgrades while still delivering a noticeable improvement over OEM clutch components.

Products specifications

Fits

2006-2011 Volvo C30; 1967 Buick Sportwagon

Torque Capacity

420 ft/lbs

I did a search with the part number and decided to give your company a try.

Nice deal

everything was easy and fast

I like how autoplicty puts listing on ebay so you have more options for cheaper prices.

simple

Excellent site easy to use

easy to order, least expensive for same item selling elsewhere for up to50 more, plus shipping. Great site will use again

quick and easy

Cheapest price by far, not the speediest shipment unfortunately.

This is the first time I've ordered from Autoplicity. I found they had the best price on the item I was looking for and decided to try them. I ordered this item yesterday(Sunday) and was just informed that it shipped. That is quick. I am pleased with their customer service and will use them as my first source.

tried to track package and all i ever got was, your order is being processed. i did try to call on a saturday, but business hours were over. And yes i did try to email several times and they were either ignored or never received.

Autoplicity site was easy to navigate and find what I needed. The prices were also better than other sources I looked at for the products I needed. I<br>ll be back

easy to navigate site

IT WAS EASY. HOOPEFULLY SHIPPING AND DELIVERY GO AS WELL.

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