EU CUSTOMERS! Please be aware you will pay import taxes on purchases from our store!

Arrma Differential Coupler / Diff Cup / Drive Cup Pair (5mm output to 8mm shaft ball end)

Arrma Differential Coupler / Diff Cup / Drive Cup Pair (5mm output to 8mm shaft ball end)

Regular price
Sale price
Unit price
Tax included. Shipping calculated at checkout.

High quality hardened steel drive cups to fit 5mm shafts.

These are a new, complete redesign of our cups (March ‘22), with many small improvements all leading to harder, stronger cups that will provide a better interface with the shafts.

Specially designed for the Scorched Parts diff locker with reduced shoulder diameter to clear the diff housing.

Also suitable for centre drive shaft to front or rear diff coupling.

Not ideally suited for V2 'Safe D' GP5 type pinon shafts, but we are aware that some folks are running them. Lots of loctite in the bore is recommended!

This item include 2 x parts

Please de-grease parts and assemble with high strength Loctite, including in the bore. Loctite 271 is recommended. 


Modifying your RC from stock condition can result in unexpected results. Operation of modified models must take this into account. Always follow the original manufacturers instructions. Whilst we build our parts to the highest standards we are able, like all rc parts, our parts cannot be guaranteed for performance, strength and durability in every situation or configuration. Do not use your RC in public areas. Do not use your RC where unexpected results could cause injury or damage to property. High Speed RC’s require GREAT CARE and a responsible attitude to use safely.