3Racing CAC-310 27T Mid-Motor Aluminium Idler Gear - Racing Setup Part  [CAC-310]

3RACING Cactus 2WD Aluminum Idler Gear For Mid Motor 27T for Cactus - CAC-310
Price:
USD$6.30
Brand:
3Racing
Model:
CAC-310
Condition:
Brand New
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Racing grade aluminium idler for Cactus 2WD

The 3Racing CAC-310 idler is a precision 27T aluminium component developed for mid-motor Cactus 2WD platforms. Manufactured to provide stable meshing and minimal deformation under sustained loads, it helps maintain predictable drivetrain behaviour during aggressive lap driving.

Performance focused construction

Using aluminium increases thermal stability and reduces the rate of tooth wear compared with injection moulded parts. The 27 tooth profile is selected to match common tuning gear ratios while preserving robust contact geometry for high RPM operation.

Optimised for mid-motor installation

As a direct-fit part for mid-motor Cactus 2WD configurations, the CAC-310 requires no chassis modification and aligns with standard mounting points. It is suited to racers seeking consistent drivetrain feedback and easier setup tuning.

What setup changes are recommended after fitting the CAC-310?

Re-check gear mesh, confirm pinion alignment, and monitor motor temperature for the first runs. Fine tune gear lash to maintain optimal contact under load.

Does this idler affect lap time consistency?

By reducing drivetrain flex and wear, the CAC-310 promotes repeatable power delivery which can improve lap time consistency when combined with proper setup.

Are there any tuning trade offs to consider?

Aluminium changes rotational mass and noise characteristics slightly; ensure this aligns with your overall gearing and handling strategy before committing to race use.

Typical installation torque and checks?

Tighten mounting hardware to manufacturer recommended torque, verify free rotation, and re-check after initial runs. Ensure no side loading or binding on the idler shaft.