Gear Ratio Calculator

Current Setup

Tire Diameter (in)

Axle Ratio

Transmission — 1st Gear Ratio

AX-5: 3.93 · AX-15: 3.83 · NV3550: 4.01 · NSG370: 4.46 · Aisin AL6: 5.13 · 42RLE: 2.84 · 32RH: 2.74 · AW4: 2.80 · Toyota A750F: 3.52 · Toyota R151F: 3.93 · Ford 10R80/7MT: 4.70

Transfer Case — Low Range

NP231 / NV241J / MP3022: 2.72 · Rock-Trac (NV241OR): 4.0 · NP207: 2.61 · Toyota ADD: 2.566 · Nissan: 2.50 · Bronco Sasquatch: 3.06 · Raptor: 2.64 · Samurai: 1.94

Portal Axles

New / Planned — change only what you're upgrading

Tire Diameter (in)

Axle Ratio

Transmission — 1st Gear Ratio

AX-5: 3.93 · AX-15: 3.83 · NV3550: 4.01 · NSG370: 4.46 · Aisin AL6: 5.13 · 42RLE: 2.84 · 32RH: 2.74 · AW4: 2.80 · Toyota A750F: 3.52 · Toyota R151F: 3.93 · Ford 10R80/7MT: 4.70

Transfer Case — Low Range

NP231 / NV241J / MP3022: 2.72 · Rock-Trac (NV241OR): 4.0 · NP207: 2.61 · Toyota ADD: 2.566 · Nissan: 2.50 · Bronco Sasquatch: 3.06 · Raptor: 2.64 · Samurai: 1.94

Portal Axles

Current Results

Effective Ratio —

Crawl Ratio (4Lo · 1st) —

Total Drive Ratio (w/ portal) —

New Results

Effective Ratio —

Recommended Re-gear —

Closest Available —

Crawl Ratio (4Lo · 1st) —

Total Drive Ratio (w/ portal) —

Current

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