Bearing Input

The Bearing Input WIN67555 from WINTERS is an essential drivetrain component designed for high-performance manual transmission systems and racing applications. This precision-engineered bearing serves as the critical interface between the input shaft and the transmission's internal gearing, handling rotational loads and enabling smooth power transfer from the engine to the drivetrain. Whether you're building a competition transmission, upgrading an existing gearbox, or maintaining a high-revving motorsport platform, a quality input bearing is non-negotiable for reliability and longevity under sustained load and elevated RPM operation.

WINTERS manufactures this input bearing to exacting standards, utilizing premium bearing steel and precision tolerances to minimize friction losses and radial runout. The compact dimensions (3.9 x 1.1 x 4.15 inches) and lightweight construction (0.76 lbs) make it ideal for space-constrained installations and applications where unsprung mass matters. The bearing's internal race geometry and seal design are optimized to handle the combined radial and axial loads typical in manual gearbox operation, resisting premature wear even when transmission fluid temperatures climb during sustained track use or aggressive shifting cycles.

Technicians and performance builders choose the WIN67555 for OEM replacement work, transmission rebuilds, and competition gearbox assembly where proven durability is required. Compatibility varies by specific transmission model and generation, so verify fitment against your transmission assembly documentation and part diagrams before ordering. Proper installation requires correct seating and preload adjustment per manufacturer specifications to ensure the bearing operates at peak efficiency and maintains consistent power delivery across all driving conditions.