Quarter Master 108503 V-Drive Hi-Ratio Pressure Plate 7.25" 2-Disc Racing Clutch

The Quarter Master 108503 is a replacement Hi-Ratio pressure plate designed for 7.25", 2-disc V-Drive (VDR) racing clutch assemblies. Purpose-built for circle track, road course, and off-road racing applications, this pressure plate is a direct-fit service component for Quarter Master's V-Drive clutch series.

The Hi-Ratio designation refers to the higher clamp load leverage ratio of the pressure plate, delivering increased holding capacity and improved torque transfer compared to standard-ratio counterparts — critical for high-horsepower racing environments.

Key Features:

• Replacement pressure plate for 7.25" 2-disc V-Drive (VDR) clutch assemblies
• Hi-Ratio design for increased clamp load and higher torque capacity
• Open cover construction promotes effective heat dissipation and cooler operation
• Reduces moment of inertia (MOI) for lightweight, efficient power transfer
• Compatible with Quarter Master V-Drive series clutch configurations
• Racer-rebuildable design supports long service life
• New Spec thickness: 0.534" | Minimum Spec: 0.528" | Max Warp Spec: 0.006"

Ideal for sportsman-class circle track, road course, and off-road racers seeking a durable, high-performance pressure plate replacement. Quarter Master's V-Drive series is engineered for racers who demand the best balance of performance, durability, and value.