Axles

  • How to Fill Your Dynatrac ProRock® Axle with Gear Oil

    A couple of questions we are frequently asked by customers is how to properly fill their Dynatrac ProRock® axle with gear oil, and which gear oil is best to use. Let’s dive right in!

    First, we recommend a high-quality GL-5 mineral-based gear oil (not synthetic). In moderate to cold climates, use SAE 85/90. If you live in a hot climate, use SAE 85/140.

    The specific fill procedure is a little different for the Dynatrac ProRock 44™ and the Dynatrac ProRock 60/XD60® axles. We go through each in the following sections. Continue reading

  • ProRock XD60® for Severe-Duty 4x4s Needing Lightweight and High Ground Clearance

    Dynatrac continues to lead the way in high ground clearance, severe-duty axle assemblies for the off-road enthusiast market. The all-new Dynatrac standard-cut, full-float ProRock XD60® is the strongest and lightest axle in its class. This axle is designed specifically for Jeep Wrangler and 4x4 builds using 37 to 40-inch-diameter tires. The ProRock XD60 fills a need between the current ProRock XD60 semi-float and ProRock 80™. Continue reading

  • Dynatrac 40-Spline 1550 Front Axle Shaft Kits

    Dynatrac introduces 40-spline 1550 front axle shaft kits designed specifically for the ProRock XD60 and ProRock 80™ front axle assemblies. The massive axle shafts are part of a complete 40-spline 1550 LT® package for these axles, providing customers with unmatched strength from hub-to-hub. And they are 100 percent made in the USA. Continue reading

  • Dynatrac™ Introduces JK44 Pro Axleshaft Kits

    Dynatrac-JK44-Front-and-Rear-Axleshaft-Upgrade-Kit

    Dynatrac™ introduces front and rear JK44 Axleshaft Upgrade Kits for the 2007 and newer Jeep Wranglers (JK). These kits are made in the U.S., and they provide an affordable way to significantly increase the strength of factory Dana 44 axles (and ProRock 44™ front axles) with high-quality Dynatrac components. The Dynatrac JK44 Axleshaft Upgrade Kits come with everything you’ll need to replace and upgrade the factory shafts. Continue reading

  • Now IFS KOH Racers and Other 4x4s can have Legendary Dynatrac™ Strength and Durability with the All-New ProRock XD60-IFS™

    Dynatrac™ introduces a solution for IFS 4x4s and KOH competitors that delivers an unmatched combination of strength, durability, size and value. The all-new Dynatrac ProRock XD60-IFS™ will take the abuse of high-horsepower and high-traction off-road tires, letting competitors use the skinny pedal without fear of breaking the differential.

    More than just legendary Dynatrac strength and durability, the XD60-IFS is also narrower than the competing axles at just 13.7 inches from flange-to-flange. Continue reading

  • Why Ring Gear Load Bolts are Useless

    We've had several people ask if load bolts are a useful method of strengthening ring gear teeth. The answer is that load bolts are NOT helpful for off road vehicles. Furthermore they mislead users into thinking they’re protected if their housing is so equipped. This is why Dynatrac’s focus has always been on designing a highly rigid housing as the best way to ensure gear strength and durability. Spend your money on a US-made ProRock, and not a load bolt gimmick. Continue reading

  • The Difference Between New Generation Dana 44 Axles and Older Ones

    The Dana 44 has been a desirable axle for Jeep builds nearly since its introduction in the 1940s. But before you get too excited about scoring a Postal Jeep 44 or even spend much energy drooling over the next-gen or new generation Dana 44 used under the 2007-2016 Jeep Wrangler JK, you owe it to yourself to learn the facts. Not all 44s are equal.

    The Dana 44 has been manufactured for nearly 70 years, and was original equipment under Jeep, Ford, GM, Dodge, International Harvester and Studebaker vehicles, and even the Isuzu Rodeo and Honda Passport. And almost every one of these had some unique, funky specification just for that model. The Dana 44 has been offered in both high- and low-pinion, with centered and offset pumpkins. Factory axleshafts ranged from 10-spline through 32 with diameters from 1.175-inch up to 1.41-inch. Continue reading

  • Comparing Axle Upgrade Options for Your Jeep Wrangler JK, Rubicon, TJ, YJ and XJ Cherokee

    Instead of forcing our customers into a single axle option for their Jeep JK Wrangler, Wrangler Unlimited, Rubicon, TJ, YJ and XJ Cherokee, Dynatrac offers many different levels of complete bolt-in off-road axle assemblies to meet a broad variety of ways that people use their vehicles. From the Mopar JK Rubicon Dana 44 to the ProRock 80,™ we can meet just about every need, can help you choose the option that best fits your needs, including your budget. Continue reading

  • Full-Floating Versus Semi-Floating Axle

    Any drive axle must be capable of performing two functions: Support the weight of the vehicle safely and transmit power to the wheels for propulsion. By design, all steering (front) drive axles are full-floating, but rear drive axles may be semi-floating or full-floating. Continue reading

  • 10 Questions You Should Ask When Shopping for an Off-Road Axle

    If you're shopping for an off-road axle for your Jeep, there are a lot of choices. They all promise to be a bolt-in and an upgrade to the factory axles, but don't be fooled: there are some key differences! If you're looking for a Dana 44 upgrade or the strength and durability of a Dana 60-based axle, here are some important questions you need to ask companies that you're considering Continue reading

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