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YUKON GEAR & AXLE: Do I need to regear?

4.88? 5.13? noisy differentials? Gas mileage??

There’s an old saying that information is power, and currently because of the internet consumers have access to a tremendous amount of information and sometimes that information can be overwhelming and confusing. 

Today we want to talk a little bit more about the mysterious world of re-gearing your differentials. 

Basics

All vehicles come equipped from factory with a ring and pinion ratio that allows the power to go from the drivetrain to your tires, this affects EVERYTHING from your gas pedal all the way to your RPM’s. When you change your tires for a new set with a larger diameter this has a ripple effect on your drivetrain since everything is related, hence the name gear ratio.

Is it really necessary?

Even a simple change from a 31" diameter tire to a 33" diameter tire will affect the amount of available torque by 10%. Modern day transmissions cost $600 or more to perform a basic overhaul. Driving with even a 10% larger tire will result in the transmission being under the same load as always being driven on an incline. The transmission may not suddenly fail, but the life will definitely be reduced by thousands of miles. RPM alone does not affect fuel mileage. An undergeared vehicle (as the result of oversized tires) will result in a substantial loss of fuel mileage. Also, just as with the transmission, your engine life will greatly be reduced. 

Pricing

There are many brands in the market and definitely when talking about differential parts you get what you pay for. Today there are a few brands that dominate the market and one of them is Yukon Gear and Axle. 

Engineered to be the highest quality aftermarket product available, they spend more time in the lapping process than other manufacturers, they set up easier run quieter and cooler and run stronger. The quality control is very high, Yukon has invested 3 million USD in quality control labs, where every aspect of the manufacturing process is checked, added to the techs at the manufacturing level that overlooking the process. The highest quality materials and manufacturing standards allows Yukon to offer lifetime warranty in their premium line. 

What is the right gear ratio for me? 

Whether you’re trail riding, desert racing or rock crawling, Yukon has the ratio 

to help get you over the toughest terrain. Roco 4x4 offers a wide variety of applications 

and ratios for your off-road vehicle. From the AMC 35 to the Dana 60 (seen below), only the best materials and the latest technology are used in manufacturing 

 

If you have any questions please contact us today!