![Yokomo S4-503D16A 16T Drive Gear[Use w/S4-503R16] for YZ-4S F1 (Formula 1) RC Kit Set by attaching this belt tensioner](https://cdn.shopify.com/s/files/1/0697/0064/9236/products/S4-503D16.jpg?v=1751685458)
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by attaching this belt tensioner to the rear end of the cross plate
and the vehicle can only run on straight lines
which was also held in 2005
- To reproduce the PC sleeper
Yokomo S4-503D16A 16T Drive Gear[Use w/S4-503R16] for YZ-4S F1 (Formula 1) RC Kit Set by attaching this belt tensionerYZ 4S standard parts differential drive gear. The number of teeth is 16T, please use in combination with the dedicated ring gear (S4 503R16 E2,500).
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