Arrowmax AM-MRX5-H0762 Mugen MRX-5 21-Tooth Second Gear  [AM-MRX5-H0762]

Arrowmax AM-MRX5-H0762 2nd. Gear 21T (7075 HARD)
Price:
AUD$9.14
Brand:
Arrowmax
Model:
AM-MRX5-H0762
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Track-Ready 21T Second Gear for Mugen MRX-5

The Arrowmax AM-MRX5-H0762 21T second gear is a purpose-made upgrade for the Mugen MRX-5 chassis. Built from 7075-T6 aluminium with a hard-coated finish, it is aimed at drivers who need consistent gear engagement and reduced wear during frequent running.

Tuning Tips and Fitment Notes

Because the gear is machined to tight tolerances, it pairs well with standard MRX-5 spur gears to deliver smooth engagement. Try alternative tooth counts to match track grip and motor torque, and check mesh every few sessions to keep things running cleanly.

Will this second gear cope with brushless setups?

Yes, the 7075-T6 construction adds strength for higher torque systems, but correct mesh and regular checks are still important to avoid premature wear.

Are replacement teeth available if damaged?

Individual replacement teeth are not typical for machined aluminium gears; replacement of the whole gear is the usual approach if damage occurs.

How should I set mesh after installation?

Use a thickness gauge or feel test with typical shims, allowing minimal clearance to prevent binding while avoiding tight metal contact. Check under load after a short run.

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