ARRMA Mini Kraton 3S 30T/12T 20CrMnTi Rear Differential Upgrade MAKM1230R by GPM  [MAKM1230R]

ARRMA MINI KRATON 3S 20crmnti Steel 30/12T Rear Differential Gear set - GPM MAKM1230R
Price:
NZD$42.80
Brand:
GPM
Model:
MAKM1230R
Condition:
Brand New
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Steel ring and pinion set tailored to Mini Kraton 3S

This aftermarket ring-and-pinion replacement is built for ARRMA Mini Kraton 3S 1/16 scale brushless trucks. The kit contains a spiral-cut 30T bevel ring and a 12T pinion in 0.8 module to preserve the stock gear geometry and allow direct installation on the listed models.

The gears are manufactured from 20CrMnTi steel with a hardened black finish to resist wear in demanding RC conditions, while the spiral-cut profile helps maintain smooth tooth engagement. Supersedes factory parts ARA-3294+ARA-2672 and is supplied as the matched ring and pinion.

Installation guidance: the set is supplied pre-assembled; it is advisable to apply medium-strength screw glue to hardware to reduce fastener loosening. Confirm backlash and gear mesh at the stock 0.8 module before full-power testing.

Compatible Models

  • ARRMA 1/16 Mini Kraton 3S DSC 4X4 RTR Brushless Speed Truck-ARA2508S
  • ARRMA 1/16 Mini Kraton 3S DSC 4X4 RTR Brushless Speed Truck-ARA2508

When durability and preserved fitment matter, this GPM ring-and-pinion pair offers a hardened-steel upgrade aimed at longer service between replacements.

How does 20CrMnTi compare to stock gear material?

20CrMnTi is a case-hardening alloy designed to increase surface durability versus softer stock metals, improving wear resistance under heavy loads.

Can this set handle high-power brushless setups?

Yes, the hardened finish and material selection target improved life in high-torque brushless applications, though correct mesh and maintenance remain important.

Do these gears need extra break-in?

Run the diff at low speed with recommended grease or oil, monitor mesh and noise during initial runs, and retorque hardware after the first session.

Will the spiral cut affect noise or efficiency?

The spiral-cut profile is intended to smooth meshing and can reduce gear noise while maintaining efficient power transfer when correctly set up.

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