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Spec Clutch SB073H-2 Stage 2 Plus Performance Clutch Kit

(Acura Integra 1999-2001; BMW 328i 2007-09, X3 2007-09, Z4 2003-11, 328i xDrive 2009, 330i 2006, 528i 2008-09, 528i xDrive 2009, 525i 2006-07 + 7 more models)

Manufacturer

Picture for manufacturer Spec Clutch

Part Number

SB073H-2
11 reviews
Sale Price

$611.89

Estimated ship date Wednesday, November 25

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Product Details

The Spec Clutch SB073H-2 Stage 2 Plus Clutch Kit is engineered to bridge the gap between the Stage 2 and Stage 3 clutch systems. It delivers the smooth, street-friendly drivability and engagement feel of the Stage 2, while providing a 15–20% higher torque capacity — making it an ideal upgrade for enthusiasts who demand more holding power without sacrificing daily driveability.

At the heart of this kit is a multi-friction disc in a full-faced configuration, combining carbon semi-metallic material on one side and Kevlar® on the other. This hybrid friction design offers excellent heat resistance, progressive engagement, and extended service life under demanding conditions. The hub is double-sprung with spring cover reliefs for added flexibility, while heat-treated internal components deliver the strength and durability needed for high-performance and racing environments.

Key Features:

  • High-clamp pressure plate for increased clamping force
  • Hybrid carbon semi-metallic and Kevlar® friction disc in full-faced configuration
  • Double-sprung hub with spring cover reliefs for smooth, flexible engagement
  • Heat-treated components for long-term strength and durability
  • High-torque sprung hub and disc assembly
  • Includes bearing and installation tool kit

Ideal Applications:

  • Street performance
  • Drag racing
  • Autocross
  • Road racing
  • Rally / Rallye
  • Pulling
  • Drift

Designed, hand-built, and tested in the USA, SPEC clutches are trusted by performance drivers across a wide range of motorsport disciplines. The Stage 2 Plus is the smart choice for drivers who need more torque capacity than the Stage 2 can offer, without crossing into the more aggressive characteristics of a Stage 3.

Products specifications

Fits

Acura Integra 1999-2001; BMW 328i 2007-09, X3 2007-09, Z4 2003-11, 328i xDrive 2009, 330i 2006, 528i 2008-09, 528i xDrive 2009, 525i 2006-07, 328xi 2007-08, 330xi 2006, 323i 2006-08, 530xi 2006-07, 525xi 2006-07, 528xi 2008, 1 Series M 2011

Torque Capacity

545 ft/lbs

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Very easy. Tried O'Reilly's and that was a pain. I'm ordering from Australia.

Good price on my THU-A90275. Had to contact customer service...they were professional and eventually resolved my concern. Called over the phone and the guy told me he couldn't help me with a coupon/refund, but that I had to contact support via email (I guess the phone support and email support aren't one and the same). It took a couple emails, but eventually they refunded me what was due.

Easy to find parts on web site, great prices, great customer service!

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Cheaper price than the competitors and free shipping. It's pure win.

Bought an Autometer Ultra lite 2 pyrometer and it looks great. Autoplicity has the best prices on their products and ships their products very quickly. I will definetly buy from them again.

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