If that car uses the same layshaft as a Mad Rat you can use t4 spurs which are available in 78t. I think a 75t is also available.
Losi Kevlar Spurs also fit.
Again, if the transmission is the same as the Rat it's a 2.6:1 ratio.
When I had a 80t spur fitted to my MR the largest pinion I could fit was a 30t unless I slightly modified the motor plate.
This gave me an fdr of about 7:1
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Rc gear>
Cars; Ansmann Mad Rat with Fusion exceed race, stock Hpi Vorza, Hpi E Firestorm 10t with Castle sidewinder SCT, stock Traxxas Rustler VXL.
Air; Hz super cub, Walkera 5g6 me
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