Select your car, set current and new insert positions, and see the geometry change.
Inside
No car selected — showing a generic 5×5 grid with approximate values (0.5°/step).
Calculating…
A / FF mount
B / FR mount
A / FF mount
B / FR mount
See How You Really Drive
Every race graded: wins, TQs, consistency, and 52 trophies. Photo the results, it logs itself.
Free RC tools to dial in your car between rounds.
RC Gear Ratio Calculator
Pinion + spur + internal ratio → final drive ratio, rollout, and chart of nearby combos.
RC Speed Calculator
Motor Kv, battery voltage, gearing, and tire size → top speed of any electric RC car.
RC Pinion Recommender
What pinion should I run? Pick your car and motor; get a starting pinion from real race setups, with the range racers run.
RC Gear Ratio Chart Maker
Build a printable pinion/spur chart for any class: gear ratio (FDR) or rollout (mm). 1/10, 1/12 pan, 1/8 presets included.
RC Crawl Ratio Calculator
Total motor-to-wheel reduction for crawlers and trail trucks: pinion, spur, transmission, axle and portal gears.
RC Battery Runtime Calculator
How long will your LiPo last? Estimate runtime by class and driving style.
Free app
Have this calculator handy at the track
Pit Calc Pro puts this pill insert geometry calculator — and 8 more tools — right on your phone, so you're never without it when you need it most.

