Spec Clutch SV503F Stage 3 Plus Performance Clutch Kit

The SPEC SV503F Stage 3+ Clutch Kit is the flagship street-performance clutch for heavily modified engines that have exceeded the torque limits of the standard Stage 3. Engineered for drivers who demand the ultimate combination of high torque capacity and daily drivability, the Stage 3+ delivers better manageability and superior wear characteristics compared to the Stage 3—without sacrificing street usability.

At the heart of this kit is a full-faced carbon semi-metallic friction disc paired with a high-clamp pressure plate, delivering unparalleled friction coefficient, heat resistance, and long service life in a single package. The sprung hub assembly is double-sprung with spring cover relieves for enhanced flexibility, while heat-treated components provide exceptional strength and durability under sustained high-load conditions.

Kit Includes:

• High-clamp performance pressure plate
• Full-faced carbon semi-metallic clutch disc
• High-torque sprung hub and disc assembly
• Throw-out bearing
• Installation tool kit

Intended Use:

• Street
• Drag Racing
• Drift
• Road Racing
• Rallye
• Pulling

SPEC clutches are designed, hand-built, and tested in the U.S.A. to strict tolerances, making the Stage 3+ the top choice for high-powered street and track builds that require a manageable, friendly engagement with race-ready holding power.