Tamiya 51704 Ring Gear Set - 39T/40T replacement for XV-02 and TT-02 Direct Coupling SP-1704  [51704]

Service and tuning for ring gears

The Tamiya 51704 Ring Gear Set is a handy service item for maintaining XV-02 and TT-02 platforms. The kit highlights the 39T gear as the reliable, broadly compatible option. A 40T piece is listed but may not suit every gearbox layout, so check fitment before swapping gears.

Fitment and routine checks

This ring gear set fits cleanly with XV-02 PRO, TT-02, TT-02D and TT-02 Type-S style gear trains. Replacing worn gears before they fail helps avoid damaged pinions or diffs and keeps handling consistent. Refer to the official Tamiya R/C Parts Matching List for exact compatibility details.