ACT T1SS-N04 Mod-Twin 225 HD Sprung Street Kit for 1999-2002 Nissan Skyline R34

Vehicle Fitment

• 1999-2002 Nissan Skyline GT-R (R34)

Fitment Notes

• Designed for AWD manual-transmission R34 Skyline GT-R applications only

Features

• Twin-disc design doubles friction surface area for superior heat dissipation and torque handling versus a single-disc clutch
• 225mm Heavy Duty construction built to handle significant power increases over stock
• Sprung Mono-Drive hub reduces drivetrain shock and delivers smooth, uncompromised street engagement
• Steel-backed, puck-style ceramic friction plates for stable friction coefficient and good heat capacity
• Four-stage heat-treated diaphragm spring for a consistent, light pedal feel
• Patented Monoloc Collar for reliable release bearing retention
• Fully modular design for long-term serviceability
• 100% clamp load tested and dynamically computer balanced for smooth high-RPM reliability

Specifications

• Disc Configuration: Twin disc (225mm)
• Disc Material: Ceramic (puck-style)
• Hub Type: Sprung Mono-Drive
• Pressure Plate Type: Heavy Duty
• Warranty: 12 Months

Included Components

• 1x CNC-machined, dynamically balanced flywheel
• 1x Pressure plate cover and diaphragm spring assembly
• 2x Puck-style ceramic friction plates (sprung Mono-Drive hub)
• 1x Floater
• 1x Patented Monoloc Collar
• 1x Release bearing
• 1x Alignment tool

Product Description

The ACT T1SS-N04 is a Mod-Twin 225 Heavy Duty Sprung Street clutch kit engineered specifically for the 1999-2002 Nissan Skyline GT-R (R34). Built for high-powered AWD street cars, it combines twice the organic-backed ceramic friction surface area of a single-disc clutch with an ultra-durable, spring-centered Mono-Drive hub, delivering meaningfully higher torque capacity without sacrificing everyday drivability.

The sprung hub design reduces drivetrain shock and torsional vibration, keeping engagement smooth and pedal feel consistent thanks to ACT's four-stage heat-treated diaphragm spring. Steel-backed friction plates provide a stable friction coefficient and strong heat capacity, while the patented Monoloc Collar improves reliability at the release bearing interface - a common wear point on high-power twin-disc setups.

This is a complete, modular kit including a CNC-machined and dynamically balanced flywheel, pressure plate, discs, floater, release bearing, and alignment tool, making it a direct, comprehensive upgrade for R34 GT-R owners pushing meaningful power beyond what the factory clutch can reliably hold.