ACT T1S-B05 Mod-Twin 225 HD Rigid Street Clutch Kit for BMW 3.0L Turbo

T1S-B05 Mod-Twin 225 HD Rigid Street Kit blends easy pedal feel, smooth but positive engagement with quick shifting for high powered AWD’s by combining twice the organic friction surfaces with a no-nonsense rigid Mono-Drive hub in a completely modular design. Each diaphragm spring endures an exclusive four-stage heat treating process. Steel-backed Friction Plates with high quality organic friction materials deliver stable friction coefficient, good heat capacity and long clutch life. These Friction Plates uniformly transfer torque to a Mono-Drive chrome-moly hub which is heat treated for strength and durability extending input shaft life with one continuous spline. The lightweight, rigid design allows for quicker shifts and trouble-free service. This kit includes a CNC-machined and dynamically balanced flywheel, pressure plate cover, diaphragm spring, face, puck-style ceramic friction plates, rigid Mono-Drive hub, floater, patented Monoloc Collar, release bearing, alignment tool and pilot bearing (if needed). Mod-Twin clutches are fully rebuildable and most components can be ordered separately. Mod-Twin 225 HD Rigid Street Soft progressive engagement, light pedal effort, smooth shifting with moderate to increased transmission gear noise; Forged Aluminum Cover, Mono-drive hub, exclusive diaphragm, premium friction materials, and hardened wear points ensure this long-life twin performs and survives under the most demanding conditions; Delivers maximum performance and high heat tolerance by combining robust design, strategic features, choice materials, and close tolerances; Street or Street/Strip; Applying tactical engineering to the Mod-Twin, ACT presents unique solutions to common tradeoffs found on twin disc clutches, resulting in an ultra-durable, customer serviceable, long-lasting clutch with very high torque capacity. All are 100% clamp load tested, balanced and SFI certified

• "Excellence in Performance", backed by the best one-year warranty in the industry!

The ACT T1S-B05 Mod-Twin 225 HD Rigid Street clutch kit is engineered for high-powered AWD and performance BMW applications using the 3.0L turbocharged N54 or N55 engine. This fully modular twin-disc system combines a soft, progressive pedal feel with smooth, positive engagement and quick shifting performance. Its rigid Mono-Drive hub and increased organic friction surface area provide reliable torque transfer while helping support long service life under demanding street or street-and-strip conditions.

Each diaphragm spring undergoes ACT’s exclusive four-stage heat-treating process for consistent clamp load and durability. Steel-backed friction plates use premium organic friction material to deliver a stable coefficient of friction, useful heat capacity, and controlled engagement. Torque is transferred through a heat-treated chrome-moly Mono-Drive hub with a continuous spline designed to promote strength, durability, and reduced input shaft wear. The forged aluminum cover, hardened wear points, dynamically balanced flywheel, and close-tolerance construction provide high heat tolerance and dependable performance with moderate to increased transmission gear noise.

The ACT T1S-B05 is fully rebuildable, allowing individual components to be serviced or replaced as needed. Every clutch is clamp-load tested, dynamically balanced, and SFI certified. The kit fits select BMW 135i, 335i, 335xi, 535i, and 535xi models from 2007 through 2009 equipped with the 3.0L turbocharged engine; verify exact vehicle configuration before ordering. ACT backs this performance clutch kit with a one-year warranty.

What's Included: CNC-machined and dynamically balanced flywheel, pressure plate cover, diaphragm spring, friction plates, rigid Mono-Drive hub, floater, Monoloc Collar, release bearing, alignment tool, and pilot bearing when required.

Features:

• Twin-disc organic friction design increases friction surface area for dependable torque capacity and smooth street engagement.
• Rigid heat-treated chrome-moly Mono-Drive hub delivers fast shifting response, strength, and reduced input shaft wear.
• Four-stage heat-treated diaphragm spring, forged aluminum cover, and hardened wear points support long-term durability.
• Fully rebuildable, clamp-load tested, dynamically balanced, and SFI certified for demanding street and street-and-strip use.

Fitments:
2007 BMW 335i Base
2007 BMW 335xi Base
2008 BMW 135i Base
2008 BMW 335i Base
2008 BMW 335xi Base
2008 BMW 535i Base
2008 BMW 535xi Base
2009 BMW 135i Base
2009 BMW 335i Base
2009 BMW 335i xDrive Base
2009 BMW 535i Base
2009 BMW 535i xDrive Base

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1