M205 Ring & Pinion Revolution Gear & Axle NIS-M205-411

Revolution Gear & Axle ring and pinion set — M205. This is a build component selected by SPECIFICATION rather than by a single vehicle application: match the frame size, flange, wheel size and A/R to your build. If you are not certain what your build needs, ask a tech before ordering.

What it does

The ring and pinion set the final drive ratio -- how many turns of the driveshaft it takes to turn the wheels once. A numerically higher ratio trades top speed for acceleration and towing grunt; a worn or howling set means the gear mesh has failed. A correctly set-up new set restores quiet drive and puts the engine in the rpm range you actually use.

How to choose

• Match the ring gear diameter and axle model to your housing
• Pick the ratio you want, and run the same ratio front and rear on a four-wheel-drive vehicle
• Confirm the carrier you have can take that ratio, since some carriers only cover a ratio range
• Plan on a matching bearing and install kit for the build

Fixes

• a howl or whine that changes with vehicle speed
• chipped or spalled gear teeth
• a regear for larger tyres or for towing
• a differential rebuild

What's included

• the ring and pinion at the ratio stated; install kit only where listed

Specifications

• Brand: Revolution Gear & Axle
• Part number: NIS-M205-411
• Shipping weight: 17.0 lb
• Condition: new
• Product type: Ring & Pinion

Cross-reference

Replaces or interchanges with Revolution Gear & Axle NIS-M205-411. Check the part number stamped on your original before ordering.

Free shipping on orders of $70 or more to the lower 48 states; everything else ships with calculated shipping at the part's real weight. Questions on fitment? Ask a tech before you buy.

Confirmed fitment

Fitment as published by the manufacturer for this part number. If your vehicle is not listed, or you are unsure, ask a tech before ordering — a part returned because it was ordered for the wrong vehicle is subject to a restocking fee.