These 5mm disc springs from Tamiya add a steadier preload to ball differentials, making small handling changes more repeatable. They are aimed at use with the F104 Aluminum Diff Housing Set, TT-01 Ball Differential Set, and Manta Ray Ball Differential Set, and suit drivers who refine setups session by session.
The Tamiya 84174 items are made to pair with the compatible diff kits listed below:
By applying even pressure through the diff stack these springs reduce slop and help maintain a predictable slip characteristic, which improves cornering consistency and component durability.
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