Push your Nissan Skyline R34 GTT RB25DET far beyond factory limits with the Action Clutch Ironman Unsprung Clutch Kit—available exclusively at Terra Firma Automotive for track-focused builders who refuse compromise. Engineered for the RB25DET’s pull-type transmission, this race-only kit fuses American Sintered Iron friction material with a dual clamp-load heavy-duty pressure plate, boosting torque-holding capacity by an astonishing 250 percent over stock. The unsprung six-puck disc delivers instantaneous on–off engagement that channels power straight to the tarmac without the clutch chatter found in lesser race clutches; drivers will notice only a touch of gear rattle and light engagement noise, small trade-offs for rock-solid reliability under extreme heat cycles and sustained high-RPM abuse. Because catastrophic spring failures can destroy a transmission in seconds, Action Clutch protects your investment with patented fully enclosed spring retainers and subjects every Ironman kit to rigorous inspection by engineers boasting more than six decades of collective motorsport experience, ensuring consistent, worry-free performance lap after lap. Selecting the correct clutch is critical, so Terra Firma Automotive partners directly with Action Clutch to provide expert guidance that matches holding power to your boost, cams, and tire compound, safeguarding warranty coverage and drivetrain longevity. When you’re ready to transform your Skyline R34 GTT into a podium-chasing weapon, order the Action Clutch Ironman Unsprung Clutch Kit from Terra Firma Automotive and experience rapid shipping, competitive pricing, and customer support from specialists who live and breathe JDM performance. Dominate drag launches, time-attack sprints, and high-angle drift entries with a clutch engineered to thrive where street-spec units fail—because true racers trust only Ironman strength under pressure.
- Sprung American Sintered Iron Disc
- Dual Clamp Load HD Pressure Plate
- Pilot Bearing / Bushing (when applicable)
- Clutch Alignment Tool
Break-in Requirements
500 street miles / Keep RPM’s under 4500, no more than half-throttle, no boost (if applicable).
Proper break-in is required in order to retain product warranty, ensure longevity and holding capacity.
*Increase in holding capacity is rated in Crank Torque, not Wheel Torque
SFI Spec 1.1 Replacement Flywheels and Clutch Assemblies
California Residents: Prop 65 WARNING: This product MAY contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov
Questions & Answers
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