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  See more parts for BMW 135i
Select the year of your BMW 135i:
ACT HD/Perf Street Sprung Kit BMW 135i | 335 | 435 | 535 | Z4 2007-2016 - BM14-HDSS

If you're looking to take your BMW's performance up a notch, the ACT Heavy Duty/Performance Street Sprung Kit (BM14-HDSS) is worth considering. This kit combines ACT's most popular heavy-duty pressure plate with a street disc that’s built to withstand the rigors of both daily driving and spirited weekend outings. The pressure plate features an exclusive diaphragm design that ramps up the clamp load, minimizes deflection, and extends the life of your clutch—basically, it's built to last.

What I really appreciate is the four-stage heat-treating process that each diaphragm goes through. It’s not just a gimmick; it genuinely enhances performance. Plus, the precision cover stampings provide that extra bit of rigidity and consistency you want when you’re pushing your car hard.

The performance street disc is no slouch either. Made from premium organic materials with a high copper content, it excels at heat transfer, which is crucial when you're really pushing the limits. The steel-backed lining adds to its durability, and the reduced marcel means you get quicker shifts—perfect for those times when you need to grab another gear in a hurry.

Installation is straightforward, and if you need a hand, you can check out the detailed install instructions here. It’s nice to have everything you need right in the box, including the alignment tool and pressure plate bolts. Just a heads up, though: you’ll need to grab an ACT flywheel separately to complete the setup.

Here’s what you can expect:

  • Light to moderate pedal effort that feels smooth and engages positively—no more clunky shifts.
  • Thanks to that nifty diaphragm design, you’ll enjoy a longer friction life, which means fewer trips to the garage.
  • It’s engineered for both street and race use, so whether you’re commuting or hitting the track, it’s got your back.
  • Every unit is 100% clamp load tested and dynamically balanced, ensuring reliability even at high RPMs.

Specifications:

  • Clutch Disc Diameter: 9.4 in (240 mm)
  • Torque Capacity: 465 ft/lbs—definitely more than enough for most applications.
  • Input Spline Quantity: 26
  • Input Shaft Diameter: 1.375 in
  • Product Weight: 15.9 lbs

Just a few notes: this kit doesn’t come with a clutch master cylinder, flywheel, or pilot bushing, but it does include grease and the necessary bolts. It’s designed to fit a range of BMW models from 2007 to 2016, including the 135i, 335i, and 435i.

In short, if you're serious about enhancing your BMW's performance, this clutch kit is a solid investment. You won’t be disappointed.

Other Part Numbers:
ACT #actBM14-HDSS

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
2008-2013
 BMW 135i
2007-2015
 BMW 335i
2011-2013
 BMW 335is
2007-2008
 BMW 335xi
2014-2016
 BMW 435i
2008-2014
 BMW 535i
2008
 BMW 535xi
2009-2016
 BMW Z4

ACT Banner

ACT ? Advanced Clutch Technology | Clutch Kits & Flywheels Built to Handle Real Power

If you've added boost, tuned for more power, or simply want better throttle control, then your stock clutch won't cut it. That?s where ACT (Advanced Clutch Technology) comes in delivering high-performance clutch kits and flywheels designed for real drivers who push their builds on the street, strip, or track.

ACT?s lineup includes everything from daily driver friendly HD kits to hardcore twin disc setups for serious horsepower. Whether you?re launching hard in a WRX, drifting in a 370Z, or canyon carving in an M3, ACT gives you the torque capacity and engagement you need without sacrificing drivability.

Why ACT? Because Power Without Control Is Useless.
  • Hold More Power Engineered to handle turbo, supercharger, and high-compression builds
  • Faster Engagement Stronger pressure plates for better bite off the line
  • Better Pedal Feel Balanced response without going full race-car stiff
  • Reduced Rotational Mass Lightweight flywheels improve rev-matching and response
  • No Guesswork Direct-fit applications, no fabbing, no hassle
ACT Clutch Kits and Flywheels Fit the Cars Enthusiasts Build

ACT doesn?t just make universal performance parts ? they build complete, vehicle-specific clutch solutions for enthusiast favorites. Whether you daily a Civic Type R, track a Subaru STI, drift a 240SX, or drag a Mustang GT, ACT offers the right clutch to match your build goals.

Top supported platforms include the Nissan 350Z/370Z, Toyota Supra A90, Chevy Camaro SS/ZL1, Mitsubishi Evo, Ford Focus RS/ST, and BMW M3/M4 ? each with clutch options tuned to your driving needs.

What ACT Offers:
  • Performance Clutch Kits From HD street kits to twin-disc race systems
  • Clutch Discs 6-puck, full-face, rigid or sprung to match your style
  • Pressure Plates Heavy-duty options that increase clamp load without sacrificing control
  • Chromoly Lightweight Flywheels Quicker revs, smoother shifts, and less drivetrain stress
  • Complete Hardware Kits Everything you need for a proper install
Performance Tested. Driver Approved.

ACT isn?t hype ? it?s proven. Their clutches are SFI-certified, track-tested, and used by racers in drag, time attack, autocross, drift, and rally. But what really matters? They hold power, last longer, and feel right even after hundreds of hard launches or hours of canyon carving.

Whether you're upgrading for more power or replacing a tired OEM clutch, ACT gives you the bite, strength, and feel to drive harder with confidence. No compromises, no excuses just parts that work when it matters.

ACT warrants all products to be free of defects in materials and workmanship for normal use and service for a period of one (1) year from retail purchase. Written notice must be immediately given to ACT within the warranty period. We require a copy of the purchase receipt showing the unit was purchased from an Authorized Dealer or Advanced Clutch Technology directly to verify the product is under warranty. Products purchased used do not carry a warranty. This warranty is to the original purchaser and is non-transferable. All non-warranty items are subject to a $50 inspection bench test fee.

ACT reserves the right to examine any part returned for warranty claim to determine, to ACT's satisfaction, whether the material or workmanship of the part does not conform to this limited warranty. ACT's obligation under this warranty shall be limited to repairing, replacing, or crediting, at its option, any part which is deemed covered by ACT. No labor, lift or storage charges will be reimbursed for any reason. Damage to ACT's parts resulting from misuse, improper use, or abuse shall void this limited warranty. Failure to follow ACT's installation instructions and the vehicle manufacturers installation procedures and specifications shall void this limited warranty.

ACT undertakes no responsibility for the quality of the goods except as otherwise provided in this contract. ACT assumes no responsibility that the goods will be fit for any particular purpose for which you may be buying these goods, except as otherwise provided in the contract. ACT shall not be liable for any damage or injury to persons or property resulting from improper installation or misuse of any part subject to this warranty.

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