[QUOTE=JOHNATHANWALKER;15302477]HELLO I WAS WONDERING IF ANYONE CAN HELP ME I AM RUNNING A XRAY T4 2018 AND I AM USING A R1 ESC WITH R1 17.5 TURN MOTOR AND I NEED A FINAL GEAR RATIO SO I KNOW WHAT PINION TO RUN. I AM USING THE STOCK SPURE 84 TOUTH 48 PITCH I NEED HELP WITHTHE PINION TO GET A GENERAL START FROM. I AM RUNNING IT ON SPEEDWORLD RACE WAY OUT DOOR ON ROAD TRACK. ANY HELP IS VERY APRCIATED.[/QUOTE. Start with a 38t pinion. Finals out @ 4.2