4x4 EVC · Drivetrain Calculator

Drivetrain Gauge

Pick the transmission gear, transfer case range, axle ratio, and tire size for whatever combo you're running — the gauges update instantly.

Welcome to our worksheet for how the mix of power trains — and in some cases, reduction units — behave at speed, in both RPM and MPH. This will likely grow as we add more options. If you spot something off, or think of an improvement, we’d love to hear it.

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Setup

:1
Final Drive Ratio
–:1
RPM
01500300045006000
– MPH

RPM → MPH Curve

Target Speed → Required RPM

MPH
→
–RPM

Reference Specs

Transmission

Transfer Case

Hyper9HV Motor

Rated Torque
172 lb‑ft (233 Nm)
Rated Power
120 HP

MPH = (RPM ÷ final drive ratio) × tire circumference × 60 ÷ 63,360. Final drive ratio = axle ratio × transmission gear (or reduction unit) × transfer case range.