3Racing Cactus 2WD CAC-137B 66mm Main Shaft Racing Upgrade  [CAC-137B]

3RACING Cactus 2WD Universal Main Shaft 66mm - CAC-137B
Price:
USD$6.30
Brand:
3Racing
Model:
CAC-137B
Condition:
Brand New
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Racing-Oriented 66mm Main Shaft for Cactus 2WD

The 3Racing Cactus 2WD Universal Main Shaft 66mm CAC-137B is produced with tight dimensional tolerances to support consistent drivetrain behaviour on race lines. Intended for racers who tune suspension and gearing, this shaft helps maintain predictable power transfer under lap-to-lap load cycles.

Will this shaft change diff tuning requirements?

A stiffer shaft can slightly alter feedback through the drivetrain; retune diff preload and slipper settings as needed to match on-track behaviour.

Is the length critical for handling balance?

Maintaining the exact 66mm specification preserves intended driveline geometry, which in turn keeps handling consistent when swapping other performance parts.

Any advice for setup when using higher torque motors?

Check gear mesh, reinforce motor mounts if necessary, and monitor bearing temperatures during initial runs to ensure the drivetrain copes with increased torque.