Tilton OT-140 5.5” 4-Plate Metallic Clutch

The Tilton 5.5" OT-140 metallic racing clutch is a top choice for competitive motorsports, offering the perfect balance of low inertia, high torque capacity, and long-lasting durability. Now upgraded with new diaphragm spring options—White (W), Orange (ORA), and Gray (G)—this clutch reduces release loads while maintaining exceptional performance. Lower release loads reduce stress on the engine’s crankshaft thrust bearings, making it an ideal solution for high-revving 4-cylinder and 6-cylinder engines. Additionally, this feature provides drivers with a lighter pedal effort, allowing for smoother and faster gear changes during intense racing conditions.

Built for demanding applications such as road racing, circle track, open-wheel, formula, and short-course off-road racing, the OT-140 clutch delivers reliability and efficiency under extreme loads. Its high-ratio pressure plate ensures quick engagement and shifting, while the open one-piece cover design minimizes heat buildup and deflection for enhanced durability. The clutch plates are constructed from high-strength steel, and the .104"-thick friction disc provides outstanding wear resistance, even at elevated temperatures. Each unit undergoes dynamic balancing and thorough quality inspection to meet the highest standards of performance.

Key Features:

• Upgraded Diaphragm Springs: Available in White (W), Orange (ORA), and Gray (G) for reduced release loads and improved drivability.

• Lower Pedal Effort: Lighter release loads reduce strain on the crankshaft thrust bearings and enhance shifting response.

• High Torque Capacity: Designed to handle extreme power levels in professional racing applications.

• Low Inertia Design: Ensures faster acceleration and improved engine response.

• Optimised Pressure Plate: Short release travel and a flat clamp load curve extend clutch life.

• Durable Construction: High-strength steel plates and a .104"-thick friction disc for enhanced wear resistance.

• Heat Management: Open, one-piece clutch cover design keeps operating temperatures lower.

• Rigorous Testing & Quality Control: Dynamically balanced and individually inspected for precise performance.

Not recommended for street use, the Tilton 5.5" OT-140 metallic racing clutch is built for serious competition, providing the reliability and efficiency that racers demand. Whether you're tackling the track in a road racing car, formula racer, or off-road vehicle, this clutch is engineered to deliver peak performance in every shift.