GPM Racing 20CRMNTI Steel 30/12T Rear Differential Gear Set for Arrma 1/16 Mini Kraton 3S Dsc 4x4 RTR Brushless Speed Truck (MAKM1230R)
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Handled by us in the UK under the Consumer Rights Act — no sending it overseas.
What our customers say
A selection of recent five-star reviews, as written.
-
★★★★★
Ordered flishrc cobra. Communication was great. Ordered larger batteries but they were the wrong size. Olly shipped the right batteries and gave a refund for the difference I paid. Couldn't ask for more. Thanks for the help with the order.
Robert, 22 September 2026
-
★★★★★
Very helpful when the vehicle I wanted wasn't in stock. Very fast deliver too.
Anna Abbott, 17 September 2026
-
★★★★★
Excellent service speedy delivery and good customer service
GLYN, 10 September 2026
-
★★★★★
Great product and service. I enjoy buying from these guys. Thanks to radio-controllled.co.uk.
Paul Jordan, 3 September 2026
-
★★★★★
Dealt with customer services over an order I accidently placed, they were prompt and dealt with it will, completely refunded within a small window of time, thanks!
Oliver Galustian, 23 July 2026
-
★★★★★
Really good online rc store with some great products and sales on. The owner is very knowledgeable as well.
Simon, 19 July 2026
-
★★★★★
Product delivered promptly and in excellent condition 👍had very helpful and prompt responses from Olly to all my questions, I will definitely be using them again 👍
Mark Clucas, 30 January 2026
-
★★★★★
The customer service and advice were first class!
Steve Avery, 9 September 2025
-
★★★★★
The seller knew I was after one and very kindly informed me when they came back into stock so now have a Flywing Bell 206. Fantastic bit of kit. Well worth the wait.
Pete Goddard, 15 April 2025
-
★★★★★
Great service, car arrived fast and really well packaged. Also, I had a little problem....(which turned out to be me doing it wrong) but someone replied the same evening! Will definitely be buying from them again.
Graham Rousseau, 10 February 2025
Key Specs
- Scale
- 1/16
- Weight
- 19 g
About this product
Premium 20CrMnTi ring and pinion for Mini Kraton 3S
This aftermarket rear differential gear set is crafted for ARRMA Mini Kraton 3S 1/16 scale brushless trucks. The kit features a spiral-cut 30T bevel ring and a 12T rear pinion in 0.8 module to maintain stock geometry for direct fitment with the listed models.
Forged from 20CrMnTi steel with a hardened black finish, the gears are intended to offer enhanced wear resistance in high-load RC situations while the spiral-cut form supports smooth meshing. The pair replaces factory parts ARA-3294+ARA-2672 and is supplied as the ring and pinion set.
Fit notes: gears arrive pre-assembled; using a medium-strength screw glue on fasteners is suggested to reduce loosening risk during running. Always confirm backlash and mesh at the stock 0.8 module and verify differential action before high-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
This GPM ring and pinion pair is recommended when a hardened steel upgrade is required to preserve stock fitment and improve longevity under demanding RC driving.
What should I inspect after installation?
Inspect gear mesh, check for smooth differential action, and confirm all fasteners are secure with recommended thread adhesive if used.
Is this set supplied as a matched pair?
Yes, the MAKM1230R is supplied as the matched ring and pinion pair intended to replace ARA-3294+ARA-2672.
Any recommended running-in procedure?
Run at low speed with appropriate metal-gear grease or oil, monitor noise and mesh, then retorque after initial runs to ensure stable operation.
Will this upgrade change maintenance intervals?
Hardened steel can extend replacement intervals, but regular inspection, correct lubrication, and proper mesh adjustment remain essential for long life. Write Product Review Please sign in your account before you can write any review.
Made to order: GPM Racing parts are shipped to us from GPM’s factory, so please allow around 14 days for dispatch.
What our customers say
A selection of recent five-star reviews, as written.
-
★★★★★
Ordered flishrc cobra. Communication was great. Ordered larger batteries but they were the wrong size. Olly shipped the right batteries and gave a refund for the difference I paid. Couldn't ask for more. Thanks for the help with the order.
Robert, 22 September 2026
-
★★★★★
Very helpful when the vehicle I wanted wasn't in stock. Very fast deliver too.
Anna Abbott, 17 September 2026
-
★★★★★
Excellent service speedy delivery and good customer service
GLYN, 10 September 2026
-
★★★★★
Great product and service. I enjoy buying from these guys. Thanks to radio-controllled.co.uk.
Paul Jordan, 3 September 2026
-
★★★★★
Dealt with customer services over an order I accidently placed, they were prompt and dealt with it will, completely refunded within a small window of time, thanks!
Oliver Galustian, 23 July 2026
-
★★★★★
Really good online rc store with some great products and sales on. The owner is very knowledgeable as well.
Simon, 19 July 2026
-
★★★★★
Product delivered promptly and in excellent condition 👍had very helpful and prompt responses from Olly to all my questions, I will definitely be using them again 👍
Mark Clucas, 30 January 2026
-
★★★★★
The customer service and advice were first class!
Steve Avery, 9 September 2025
-
★★★★★
The seller knew I was after one and very kindly informed me when they came back into stock so now have a Flywing Bell 206. Fantastic bit of kit. Well worth the wait.
Pete Goddard, 15 April 2025
-
★★★★★
Great service, car arrived fast and really well packaged. Also, I had a little problem....(which turned out to be me doing it wrong) but someone replied the same evening! Will definitely be buying from them again.
Graham Rousseau, 10 February 2025
