Arrowmax AM-MRX5-H0759 18T Clutch Pinion - 7075 Hard  [AM-MRX5-H0759]

Arrowmax AM-MRX5-H0759 1st. Gear 18T (7075 HARD)
Price:
NZD$11.30
Brand:
Arrowmax
Model:
AM-MRX5-H0759
Condition:
Brand New
Available in warehouse
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Precision 18-Tooth Pinion for MRX-5

The Arrowmax AM-MRX5-H0759 18T clutch pinion offers Mugen MRX-5 users a blend of light weight and toughness. Fabricated from 7075-T6 aluminium, the gear resists deformation while the hard surface treatment helps extend service life. Its tooth form is suited to mesh accurately with compatible spur gears.

Adjustable Tooth Range

Hobbyists can choose from 16T to 21T pinions to tailor gear ratios for different circuits or driver preference. Small changes in tooth count let you trade acceleration for higher top speed or vice versa.

Does the 18T change top speed much compared to other sizes?

Yes. Increasing pinion teeth raises theoretical top speed but can reduce acceleration. Dropping teeth improves initial punch. Real world effect depends on motor and track.

Is any special maintenance needed for a 7075 pinion?

Inspect for nicks and burrs after running, keep the mating spur free from grit, and ensure the retaining screw stays tight. The hard finish reduces wear but regular checks are still recommended.

Will this work with high torque motors?

7075 aluminium offers good strength for demanding setups, but confirm shaft fit and secure attachment. For very high torque applications consider matching upgrades across the drivetrain.

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