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ACT BMW N54/N55 6-bolt Mod-Twin 225 HD Rigid Street Clutch Kit pairs two organic friction discs with a rigid hub and a matching flywheel. This Heavy Duty street configuration is rated by ACT for 690 lb-ft of engine torque; that figure is not a wheel-torque rating.
Use ACT manufacturer part number T1S-B01 to confirm the exact drivetrain component and application.
| Years / Production | Make | Model | Application |
|---|---|---|---|
| 02/2009-2013 | BMW | 135i | E82/E88; N54 through 2010, N55 2011-2013; compatible manual transmission |
| 2013 | BMW | 135is | E82/E88; N55; compatible manual transmission |
| 02/2009-2015 | BMW | 335i | E90/E92/E93 N54 through 2010, N55 2011-2013; F30 N55 2012-2015; compatible manual transmission |
| 02/2009-2015 | BMW | 335i xDrive | Matched E90/E92/E93 or F30 N54/N55 assembly; compatible manual transmission |
| 2011-2013 | BMW | 335is | E92/E93; N54T; compatible manual transmission |
| 2014-2016 | BMW | 435i | F32; N55; compatible manual transmission |
| 2014-2016 | BMW | 435i xDrive | F32; N55; compatible manual transmission |
| 02/2009-2016 | BMW | 535i | E60/E61 N54 through 2010; F10 N55 2011-2016 chart range; confirm actual manual availability; compatible manual transmission |
| 02/2009-2010 | BMW | 535i xDrive | E60/E61; N54; compatible manual transmission |
| 2009-2016 | BMW | Z4 | E89 sDrive35i; N54; compatible manual transmission |
| 2014-2016 | BMW | M235i | F22/F23; N55; compatible manual transmission |
2009 N54 coverage starts with February production; January eight-bolt engines require the matched B05 kit. Automatic/DCT systems are excluded. Verify the exact factory or installed gearbox and engine; later F10 chart years do not establish factory manual availability.
| Brand | ACT |
|---|---|
| Product type | multi-disc clutch kit |
Manufacturer Part Number: T1S-B01
ACT develops application-specific clutch, flywheel and release-system components for street and competition use.
The T1S-B01 should be selected as part of a complete matched ACT drivetrain system.
What is the T1S-B01?
It is the ACT multi-disc clutch kit described in this listing for the stated application and use.
How do I confirm fitment?
Match the complete year, make, model, engine, transmission and every qualifier shown in the title and fitment section.
Is this intended for street use?
Use suitability depends on the specific disc, pressure plate, flywheel and clutch configuration shown in the listing.
Can I mix clutch components from different kits?
Do not assume components are interchangeable. Verify spline, diameter, step height, release system and the complete matched ACT assembly.
Does installation require break-in?
Follow the current ACT instructions for the exact clutch and disc type. Street friction systems commonly require a controlled break-in period; race products can differ.
Should the flywheel be inspected or resurfaced?
Yes. Inspect the mating surface and use only a compatible flywheel prepared to ACT specifications. Replace damaged or out-of-spec components.
Is professional installation recommended?
Yes. Clutch and flywheel work requires correct transmission removal, fastener torque, alignment, release-system setup and safety procedures.
Can Black Ops Auto Works help verify the application?
Yes. Provide the vehicle, engine, transmission, existing flywheel, power level and intended street or competition use before ordering.
California Proposition 65: This product carries a manufacturer-supplied California Proposition 65 warning. See product packaging for details.
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