Spec Clutch SU073F Stage 3 Plus Performance Clutch Kit

The SPEC SU073F Stage 3 Plus Clutch Kit is the flagship street-to-race performance clutch solution for heavily modified engines that demand more torque capacity than the standard Stage 3 can support. Engineered for high-powered street and competition builds, the Stage 3+ delivers a manageable, friendly pedal engagement without sacrificing holding power — making it one of the most versatile performance clutch kits in SPEC's lineup.

At the heart of the Stage 3+ is a carbon semi-metallic full-faced friction disc, a material chosen for its outstanding balance of longevity, friction coefficient, and daily drivability. The disc's double-sprung hub features spring cover reliefs for enhanced flexibility, while heat-treated internal components provide the strength and durability needed for sustained high-torque applications.

Key Features:

• High-clamp pressure plate for maximum torque transfer under load
• Carbon semi-metallic full-faced friction material for superior life, friction coefficient, and drivability
• High-torque sprung hub and disc assembly with double-sprung design and spring cover reliefs
• Heat-treated hub components for long-term strength and durability
• Includes release bearing and installation tool kit
• SFI approved — meets stringent safety standards for performance applications
• Designed and manufactured in the USA

Intended Use: Street, Drag Racing, Drift, Road Racing, Rally, Autocross, Pulling

SPEC clutches are engineered and manufactured in-house at their purpose-built facility in Bessemer, Alabama, ensuring strict tolerances and quality control from design through production. The Stage 3+ sits at the top of SPEC's street-oriented clutch range, bridging the gap between aggressive streetability and all-out race performance.