Hyd. T/O Bearing 4.9/5.5

The Hyd. T/O Bearing 4.9/5.5 from Tilton is a precision hydraulic throw-out bearing designed for high-performance and race applications where clutch actuation reliability is essential. This component serves as the critical interface between your hydraulic clutch system and the pressure plate, enabling smooth, consistent engagement and disengagement under extreme conditions. Ideal for street rods, competition drag cars, or road-racing platforms, this bearing is built to handle the repetitive shock loads and thermal cycling that stock systems cannot sustain.

The 4.9/5.5 designation indicates the bearing's dual-diameter bore geometry, optimized for compatibility with Tilton's modular clutch housings and master/slave cylinder configurations. Hydraulic throw-out bearings operate by channeling pressurized fluid through internal galleries to actuate the release mechanism without mechanical linkage, which eliminates pedal feedback lag and reduces installation complexity in tight engine bays. The sealed design protects against contamination and fluid weeping, while precision-ground races contribute to extended service life even under aggressive shift cycling and elevated engine temperatures.

Mechanics and fabricators favor this bearing for custom clutch builds, mid-engine conversions, and retrofits where conventional cable or rod-operated systems conflict with modern engine packaging. Weighing just 1.45 lbs and measuring 6 x 4.3 x 6.7 inches, it is a lightweight solution that enhances performance without adding unnecessary bulk. This product is an excellent choice for those looking to upgrade their clutch system for improved reliability and performance.