Capricorn LAB C803 & 804 Front Differential Drag Oneway - Arrowmax AM-930003  [AM-930003]

Front diff oneway with measured drag

The Arrowmax AM-930003 is a drag assisted oneway created for front differential use on Capricorn LAB C803 and LAB C804 chassis. It alters rollback and engagement behaviour to change on-throttle and off-throttle balance, allowing more precise handling adjustments in scale on-road cars.

Presented as a direct-fit upgrade for the listed Capricorn models, this part stresses compatibility rather than universal fitment. It adds controlled drag into the oneway assembly, which alters how the front wheels hand back drive and influences turn-in and mid-corner behaviour compared with a standard oneway.

Mounting and tuning advice

Installation requires access to the front differential and standard hobby tools. Ensure the unit seats correctly inside the differential housing and verify output shaft clearances match factory tolerances. During tuning, introduce changes in small steps and use short runs to judge steering and traction changes, reverting to the stock component if behaviour is erratic.

Like any drivetrain hop-up, pair this oneway with compatible gears and healthy bearings to retain reliability. After fitting, confirm gear mesh and bearing condition and watch for unusual noise or heat that could indicate misalignment.

This Arrowmax unit suits modellers aiming for a defined front drivetrain response on Capricorn LAB C803 and C804 cars; always validate its effect with measured test runs and routine inspections after installation.