Shimming the differential correctly is an important step and this is the building the perfect gearbox

Sold in sets of 8 balls

which equals more RUN TIME

or at the flying field

HPI Racing - HPI TF-11 - 2.4Ghz Transmitter (2Ch) KYO34425T1C Shimming the differential correctly isUse the comfortable and feature packed HPI TF 11 2. 4GHz radio system for supreme control and confidence when controlling your car or truck kit! The HPI TF 11 radio system uses the latest digital FHSS (Frequency Hopping Spread Spectrum) 2. 4GHz radio technology to give you trouble free and total control of your RC car. You will be able to confidently drive your HPI kit with other drivers without worrying about things like frequencies or radio