Command every launch in your Nissan Skyline R34 GTT RB25DET with the Action Clutch Ironman Sprung (Street) Clutch Kit, now available from Terra Firma Automotive. Purpose-built for the pull-type transmission, this race-focused upgrade teams American sintered-iron friction material with a dual clamp-load heavy-duty pressure plate, delivering a staggering 250 percent increase in torque-holding capacity over the factory unit. Engagement is intentionally aggressive—an immediate on/off bite that feeds power straight to the wheels without clutch chatter, making it ideal for drag passes, time-attack stints, and high-angle drift transitions where split-second response matters. Expect some light engagement noise and gear rattle; they’re the audible proof of a no-compromise assembly engineered for extreme duty.
Action Clutch safeguards your investment with patented fully enclosed spring retainers that stop damper springs from ejecting under shock load, a failure that often spells disaster for transmissions. Every Ironman kit is meticulously inspected and signed off by engineers boasting more than six decades of collective motorsport experience, ensuring consistent, race-ready performance with each shift. The result is a clutch that thrives under brutal heat cycles and relentless abuse yet maintains the reliability serious racers demand.
Selecting the correct clutch for your power goals is vital; an over- or under-spec unit can cause premature wear, transmission damage, and void your warranty. If you’re uncertain about fitment, Action Clutch’s technical team is ready to guide you. When you’re prepared to unlock uncompromised power delivery, order the Action Clutch Ironman Sprung (Street) Clutch Kit from Terra Firma Automotive and fortify your R34 GTT drivetrain with a solution engineered exclusively for the track.
- 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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