The Yokomo YOKIB644C collar is engineered for DIB main gear assemblies to locate the main gear shaft and prevent unwanted axial movement. It serves as a retention point that helps keep the spur and pinion properly engaged.
To fit, position the collar against the gear face or spacer as required by your chassis and secure per your normal service procedure to eliminate endplay. The blue finish provides a clear visual cue for inventory and routine checks.
By limiting shaft travel under torque, this collar enhances drivetrain reliability and can reduce repetitive wear from poor gear engagement, making it a simple upgrade for durability-minded builders.
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