Tamiya 53421 Aluminum Pinion Gear Set 42T/43T OP-421 Race and Road Gears  [53421]

Precision Aluminium Pinions for TA-04 Builds

Model car tuners can use the Tamiya 53421 Aluminum Pinion Gear Set to refine gear ratios and drivetrain feel. The set contains two aluminium pinions specifically made with TA-04 applications in mind for steady engagement.

Built for Consistent Wear

Aluminium construction keeps the pinions light while resisting routine wear, helping maintain smooth gear engagement over time. Included are 42T and 43T options for small incremental changes to gearing balance.

Practical Fit and Use

Fitting is simple using the supplied allen key and set screws, which makes on-site swaps straightforward. Although made for TA-04, they are compatible with many 48P metric gear systems where tooth pitch matches.