Dynatrac has created Axle Sets, pairing completely assembled and ready to run front and rear Dynatrac axles designed for specific types of Jeep Wrangler JK builds. It's now easier than ever to determine what Dynatrac axles will be ideal for the type of JK build you have. Purchasing these axles in our pre-configured sets saves you money, and lots of it!
All of these new Dynatrac Axle Sets™ include the U.S.-patented ProRock® design, providing you with the absolute best ground clearance. And these axles are 100% designed, manufactured and assembled in the U.S. using U.S.-sourced steel. That's something that you as a customer and us as a manufacturer can be proud of!
Company created the Trail Leader Axle Package™ for Jeep JK owners who enjoy moderate off-roading and want reliable drivetrain durability after upgrading to 33- to 37-inch-tall tires. This package gives you all the Dynatrac strength and durability you need without requiring wheel changes or other costly upgrades that simply aren't necessary for the type of off-roading you do.
The Trail Leader Axle Package™ includes an assembled ProRock 44™ Unlimited front axle with 1/2-inch thick axle tube walls complete with Dynatrac HD Rebuildable Balljoints, Dynatrac Pro Series™ diff cover, front Dynatrac axleshafts, ARB air Locker and ring-and-pinion gear set. Move your factory spindles and brakes onto this new front axle and the assembly is ready to bot into your Jeep! The package also includes the following to upgrade your factory Dana 44: Dynatrac JK44 Axleshaft Upgrade Kit™, 35-spline ARB Air Locker, Dynatrac Pro Series™ diff cover, ring-and-pinion gear set and a set-up kit.
NOTE: The Trail Leader Axle Package™ is only for non-Rubicon Jeep JK models. If you own a Rubicon model, please have a look at ProRock 44 front axle housing upgrade and Serious Performance Axle Set™.
What You Get:
ProRock 44™ Unlimited Front Axle
Dynatrac 35-Spline JK44 Rear Dana 44 Upgrade Kit
All the strength your JK Dana 44 rear axle will ever need! This rear JK44 Axleshaft Bundle Kit increases the shaft diameter to from 30- to 35-spline. The shafts feature Dynatrac proprietary deep heat-treat for optimum yield strength (resistance to twisting) without making the axleshafts brittle. The shafts are U.S.-made, equipped with rolled splines and include new wheel studs, billet steel retainers, seals and all of the hardware that will be needed for installation. If you need more strength than this, then you need a Dynatrac ProRock® rear axle!
JK44 Axleshaft™ Features Include:
NOTE: The new ram assist/steering stabilizer bracket for the ProRock44 is not compatible with Reid Racing knuckles.
Ideal for Jeep JK owners who need reliable drivetrain durability after upgrading to 33- to 37-inch-tall tires and want to save $1,500 to $2,500 by not buying new wheels when upgrading to stronger axles.
You get an assembled ProRock 44™ front axle and ProRock 60® semi-float rear axle, giving you the Confidence to Explore® off-roading with your family with the security of reliable, high-quality, U.S.-made axle assemblies.
In addition to best-in-class axles, you also get an exclusive integrated raised- track-bar bracket and hydraulic-ram steering assist mount, Dynatrac HD Balljoints™, the last balljoints you’ll ever need.
What You Get:
ProRock 44™ Unlimited Front Axle
NOTE:This ProRock 44™ assembly does not include spindles, hubs or brakes - customer is to reuse the spindles, hubs and brakes from their Jeep.
ProRock 60® Semi-Float Rear Axle
NOTE: The new ram assist/steering stabilizer bracket for the ProRock44 is not compatible with Reid Racing knuckles.
The Hard Core ProRock 60/60 Axle Set™ is ideal for Jeep Wrangler JK owners who need reliable drivetrain durability after upgrading to large tires, up to 40 inches diameter.
You can’t buy a lower priced, stronger, better quality nor more dependable U.S.-made bolt-in JK axle solution than the Dynatrac Hard Core Axle-Set™, which also has better braking and more ground clearance than its competitors.
The Hard Core ProRock 60/60 Axle Set™ is ideal for Jeep Wrangler JK owners who need reliable drivetrain durability after upgrading to large tires, up to 40 inches in diameter. If you're considering a pair of Ultimate Dana 60 axles (also called UD60), you owe it to yourself to look closely at our Hard Core 60/60 Axle Set™!
What You Get:
ProRock 60® Front Axle
Pro 60™ Full-Float Rear Axle
NOTE: Both front and rear axles are 68.5 inches wide and have 8 on 6.5 wheel bolt pattern.
Wheel More, Worry Less™ with the Strongest 60-Class Axles!
The Hard Core Plus ProRock XD60/XD60 Axle Set™ is for Jeep Wrangler JK owners who want more than just “one-ton” axles. This axle set delivers Dynatrac ProRock XD60® technology front and rear. Unbeatable durability with more axle rigidity to better hold proper gear mesh under extreme loads. The exclusive Dynatrac 1550LT® wheel ends provide tighter turning, less locker bind when turning, reduced steering effort and less wear-and-tear on steering components. And both axles offer best-in-class ground clearance.
What You Get:
ProRock XD60® Front Axle
NOTE: Comes with 35-spline shafts, hubs, locker.
ProRock XD60® Standard-Cut Full-Float Rear Axle
The Dynatrac Elite ProRock XD60/80 Axle-Set™ stands alone among all other 4x4 drivetrain options. It is the very best 4WD drivetrain technology that money can buy. You simply cannot find a stronger axle solution than the ProRock Elite Axle-Set™. The U.S.-made bolt-in unit is lightweight and has higher ground clearance than its competitors.
The ProRock XD60/80 Axle Set™ is for Jeep Wrangler JK owners who will not settle for anything less than the very best drivetrain durability, quality and extreme performance for running tires in diameters from 37- to 44-inches. If you are a highly experienced and skilled off-road driver who regularly engages in very technical off-roading with their friends and family, you enjoy taking on the hardest trails and the most difficult and challenging obstacles, this is the Axle Set for you.
The ProRock XD60/80 Axle Set is designed specifically for large JK builds with very large tires, high-performance engine swaps, superchargers, high-torque diesel engine swaps, deep gear reduction and transfer case ratios numerically higher than 4:1.
What You Get:
ProRock XD60® Front Axle
NOTE: Comes with 35-spline shafts, hubs, locker.
ProRock 80™ Full-Float Rear Axle
The Dynatrac ProRock44/60 Hybrid™ offers all of the advantages of the ProRock 44™ plus the advantage of Dynatrac Pro60® axleshafts, knuckles, fixed spindles, 1480 steering joints and hubs. This provides the unbeatable ground clearance of a Dynatrac ProRock 44 and the axleshaft and outer-end strength of a ProRock 60! Add the strength of a Dynatrac Pro 60 at the ends of an ultra-high ground clearance ProRock 44. Dynatrac JK axles include exclusively designed ABS and stability control sensor mounts to maintain all factory function of these systems.
ProRock 44/60 axles are available with either Warn or optional Dynatrac DynaLoc™ locking hubs. When you use the Dynaloc locking hubs with our exclusive Stub Hub kit, the overall package is 4.75-inches narrower. That means that the hubs tuck into the wheels better with 2.388-inches per side.
Check out these standard features:
Dynatrac™ introduces the next step in its revolutionary, patented ProRock™ series of off-road axles with the all-new ProRock XD60™. The Dynatrac engineering team went back to the drawing board to find ways to increase the strength and durability beyond the patented ProRock 60® which is already the industry standard for upgrades beyond the Dana 60.
The all-new ProRock XD60 axle is now available in both front and rear applications for the 2007 to current Jeep Wrangler (JK).
The new Dynatrac ProRock XD60 starts with a center section cast from high-strength nodular iron. The patented design provides the best ground clearance in the industry. The axle was designed to hold a larger differential and 10.1-inch ring gear, providing a 16 percent strength increase over 9.75-inch Dana 60 gears. Using CAD/FEA and advanced engineering tools, Dynatrac designed the new center section for increased rigidity, increasing the stability of critical tolerances during high stress for better durability. It is also available with larger carrier and pinion bearings for even more strength. The internal Dynatrac Dual Sump High Volume (DSHV) lubrication system provides optimal oiling. All of these improvements were achieved while also making the center section 15 percent lighter. The ProRock XD60 also has optimal cast-in features for air locker and electric locker connections..
In addition to these engineering advancements in the center section and wheel ends, the Dynatrac XD60 also features an all-new differential cover designed to withstand brutal beatings in demanding off-road and racing conditions. The lower bolt heads are deeply embedded in the cover for skid protection, and the fasteners are the largest in the industry: 7/16 inch compared to conventional 3/8 inch. The rock ribs have been placed for optimal protection..
The Dynatrac ProRock XD60 is designed for 3 3/4-inch outside-diameter axle tubes with either 1/4-inch or 5/16-inch wall thickness. The 1/4-inch-thick axle tubes are 22 percent stronger than a 3 1/8-inch-diameter tube with 5/16-inch wall thickness, and they weigh the same. The 5/16-inch-thick tubes are 12 percent stronger and 18 percent lighter than 3 1/8-inch-diameter tubes with 1/2-inch wall thickness. The Dynatrac ProRock XD60 accepts a full range of differentials, including air lockers, electric lockers and limited slips. Gear ratios are available from 3.54:1 to 5.38:1..
The ProRock 60 Builder’s Kit for Tacomas includes a high-pinion ProRock 60 housing, high-strength 35-spline axleshafts and Pro Series™ differential cover. This new axle includes the vital components and features that have made the ProRock 60 an icon in the industry:
The ProRock 60 Builder’s Kit is a significant improvement in rear-axle strength for Tacomas. It uses a 9.75-inch ring gear, compared to the stock 8.0-inch ring gear that comes in these trucks. The Dynatrac axleshafts are 35-spline, compared to the stock 30-spline shafts, and the Dynatrac shafts feature a unique heat-treat process for additional strength. The ProRock center section has Dynatrac legendary strength engineered into it, and the axle tubes have 0.3125-inch wall thickness, compared to 0.200-inch from the factory. The customer re-uses the brakes and ABS sensors, and he can either can supply the differential and ring-and-pinion gear of his choice to complete the axle assembly or order them separately from Dynatrac.
The Dynatrac ProRock 44™ front axle offers incredible strength and unmatched ground clearance in a small package. The ProRock 44 is full of uncompromised standard features like huge 3-inch-diameter, thick-wall axle tubes, unique US-made heavy-duty Pro44™ end forgings, thicker suspension brackets than stock and more.
ProRock 44 assemblies are available as direct replacements for Dana 30 and Dana 44 front axles in the Jeep JK, TJ and XJ.
Every Dynatrac ProRock 44 features:
The Dynatrac Trail Series 60™ provides more bolt-in beef for your Jeep JK without breaking the bank. The Trail Series 60 features big 1 1/2-inch, 35-spline, 1-ton semi-float axleshafts stuffed inside of 3 1/8-inch diameter, 5/16-wall axle tubes. This rear axle features the same made-in-USA Dynatrac™ quality, materials and craftsmanship, but by offering the Dynatrac Trail Series 60 in just a few configurations, we can build more of them and keep the costs down. Then we pass the savings on to you!
Standard Equipment:
Optional Equipment:
The Dynatrac ProRock 60® was the first of its kind when it was unveiled in 2002. Today, it’s an off-road performance standard to which all other Dana 60 based axles are compared.
And now, you can have a ProRock 60 front and rear axle for your 2006-2017 Jeep JK at the lowest price ever offered! Front and rear ProRock 60 packages for the Jeep JK that come complete with ARB Air Lockers and 5.38:1 gears, ready to bolt in.
Custom ProRock 60 axles can be built for the Jeep TJ, XJ, CJ, WJ and just about any other type of 4x4. They are available in standard and custom applications with 35- and optional 40-spline shafts. The nodular-iron ProRock 60 housing combined with the 9¾-inch high-pinion gearset supplies “1-ton” strength and durability as well as improved driveshaft angles and driveshaft ground clearance, especially on short wheelbase 4x4s and front-axle applications. Dynatrac ProRock 60 front axles include massive steering joints, end forgings and wheel ends to provide the ultimate confidence. Dynatrac JK axles include exclusively designed ABS and stability control sensor mounts to maintain all factory function of these systems.
ProRock 60 axles are available with either Warn or optional Dynatrac DynaLoc™ locking hubs. When you use the DynaLoc locking hubs with our exclusive Stub Hub kit, the overall package is 4.75-inches narrower. That means that the hubs tuck into the wheels better with 2.388-inches per side.
Standard Features:
Standard Front-Axle Equipment:
Optional Front-Axle Equipment:
Standard Rear-Axle Equipment:
Optional Rear-Axle Equipment:
The Dynatrac ProRock 80™ is the ultimate rear axle upgrade. Big tires? Big power? No problem! No other axle in existence handles this much torque, has this much ground clearance and is this lightweight. Do your worst. The massive 11.25-inch ring gear, giant 2-inch diameter pinion and 40-spline 4340 axleshafts give the ProRock 80 the ability to handle huge tires, a massive rig and a heavy right foot.
The lightest axle in its class, the ProRock80 has all the beef you’ll need in your JK to handle the largest tires with the hottest motor. Designed to handle just about anything you can throw at it, the ProRock80 has the strength to get you there and back. The ProRock80 is based off of the massive Dana 80. We took the best features of the Dana 80, added in the best features of our ProRock design and ended up with an axle that can handle the toughest terrain.
No other axle in existence can handle this much torque, have this much ground clearance, and be this lightweight.....PERIOD!
Features and Standard Equipment:
Optional Equipment:
For the most extreme ground clearance available, the Dynatrac Portal Axle™ is fitted with AxleTech International Motorsports (AIM) portal axle ends. The advantage of this Dynatrac Portal Axle is that the gear reduction at the hub moves the axle centerline up five inches. This is a dramatic change in ground clearance; more ground clearance than switching from 35-inch to 44-inch tires on your vehicle!
So what is the advantage of a portal axle? The gear reduction at the hub moves the axle center line up five inches for increased ground clearance. This is a dramatic change; the equivalent of switching from 35” to 44” tires on your vehicle. Additionally, the geared hub design provides a 1.5:1 gearing reduction through a massive 41 spline axle shaft designed specifically to account for increased torque loads. The nodular iron AIM portal gear boxes contain four 2.25 inch wide 8620 heat treated steel gears: a drive gear, two idler gears, and a gigantic driven gear that keeps the drive direction constant, making them a practical retrofit to traditional axle housings. By multiplying torque at the wheel, less torque is transferred through the driveshafts, transfer case, and other upstream drivetrain components. And a numerically higher gear ratio can also now be used, which results in a larger, stronger pinion gear.
The idea of using portal axles for more ground clearance is not new, however there have been a number of factors that have made them unfeasible… until now. In the past you had to overcome poorly functioning drum brakes, long pinions that result in short driveline lengths, excessive weight, and difficult to source foreign parts when trying to retrofit portal axles to your Jeep or 4x4. Dynatrac has worked closely with AIM and Mopar to address all of these issues (and more) with the introduction of their innovative new portal complete axle assemblies and sub-assembly components.
Realistically these new portal axles aren’t for everyone. They are not recommended for highway use, and the leverage of the portal design places additional stress on suspension mounting points and control arms. Electronic controls such as ESP and ABS cannot be retained with the portal boxes, as they can with Dynatrac’s traditional ProRock, Pro, and Trail Series axles. There is no provision for a standard parking brake; however a driveline brake at the transfer case can easily be added to address this issue. Final suspension design will be determined by many factors and it is crucial that the suspension design address the added torque and leverage of the portal system. The end user will need to design proper steering and a strong 4-link suspension. Therefore, it’s important that a qualified specialist with fabrication skills and a thorough knowledge of suspensions install it. In short, this isn’t a ‘turn-key’ assembly that fits any application. With the caveats out of the way, it becomes clear that if you require the absolute greatest ground clearance, with gear reduction to overcome the most severe, boulder-strewn trails and obstacles, there is no substitute for Dynatrac and Mopar axles equipped with AIM portal housings.
The portal wheel ends are currently available for king pin steering knuckles and full floating rear Dana 60, Dana 70, and AAM 14-Bolt applications. Dynatrac can provide the AIM portal housings on their proprietary ProRock and Pro-series axle assemblies with suspension brackets for a wide variety of vehicle applications.
Dynatrac are still very early in the evolution of portal axle systems. As more of these units are tested we’ll have more information regarding suspension and steering design to pass on to the installers. Company are continuing work with Mopar and AIM on Jeep Wrangler JKs to refine the system to create a more ‘turn-key’ package. Mopar Performance part numbers P5155670 and P5155671 are available from Dynatrac and your local Dodge/Chrysler/Jeep Dealer. They are specifically designed to fit 2007 and newer Wrangler JK vehicle if used for off-road only purposes. Dynatrac is not only a dealer for Mopar parts and accessories, they are also a supplier of new and unique products to Chrysler and Mopar, with their axle assemblies being prominently featured on popular Mopar Underground vehicles such as the Lower 40, NUKIZER M715, The ImMortal, and the 1320 Dodge Challenger.
In addition to making the made-to-order custom axle assemblies that Dynatrac is famous for, AIM portal boxes and related components will also be available individually from Dynatrac for those who wish to retrofit the portal boxes to their existing axles. “People best know Dynatrac for providing high quality, US-made axle solutions,” explained Dynatrac founder Jim McGean. “The evolution of off road vehicles continues and once again, Dynatrac is in the forefront with the help of industry leaders like AIM and Mopar Performance”.
Dynatrac ProRock Portal Axle Features:
Dynatrac Portal Axles are available as bolt-in assemblies for the Jeep Wrangler JK (for off-road use only).
Dynatrac™ introduces the missing link in GM IFS truck drivetrain: the ProRock XD60-GM-IFS™ for the ultimate upgrade in front axle strength and durability. Developed for military applications, the ProRock XD60-GM-IFS provides unmatched strength and durability for 2007 and newer GM 2500 HD 4x4 trucks with Duramax and Allison transmission.
The core of the new Dynatrac ProRock XD60-GM-IFS™ is high-strength nodular iron center section. The ProRock XD60-GM-IFS™ features exclusive larger carrier and pinion bearings for even more strength. It uses a massive 10.1-inch ring gear compared to the factory 9.25-inch gear. Even more significant to durability, though, Dynatrac designed the new center section for world-class rigidity, increasing the stability of critical tolerances during high stress. This nearly eliminates the chance of gear failure caused by axle housing deflection.
The ProRock XD60-GM-IFS™ features optimal cast-in bosses for air locker and electric locker connections, and the mounting points for the housing are an integral part of the casting.
In addition to these engineering advancements in the center section, the Dynatrac ProRock XD60-GM-IFS™ features an all-new structurally-integrated differential cover designed to add strength to the overall housing. The cover is made from nodular iron, attaches with 7/16-inch Grade 9 fasteners and a captured O-ring seal.
The Dynatrac ProRock XD60-GM-IFS comes with 35-spline or 40-spline 4340 inner axleshafts and supports stock, 934 or Series-30 CV flanges. The ProRock XD60-GM-IFS™ accepts a full range of differentials, including air lockers and electric lockers. Gear ratios are available from 3.54:1 to 5.38:1.
The Dynatrac Pro 60-IRS™ is the strongest rear axle you can buy for your 2005-2014 Dodge Challenger, Charger, Magnum and Chrysler 300 (LX series of cars). We engineered this IRS axle to eliminate issues with rear axle performance and durability. It will handle just about any level of power and the abuse and stress of drag racing, road racing and just plain everyday driving. In addition to strength and durability, the Dynatrac Pro 60-IRS with more than a dozen gear ratios; from 3:54:1 all the way up to 7:17:1! If you’ve made upgrades under the hood, you’ll want to upgrade your rear too. You can do it before you break the stock unit or wait. Either way, we’ll be ready to build your Pro60-IRS!
Available exclusively from Mopar Performance - Jeep Wrangler military-grade front and rear axle assemblies for Jeep Wranglers. These tough, genuine Jeep assemblies are designed for the military Wrangler J8 and provide the next level of off-road performance for Wranglers. They come fully assembled and well equipped with 4.10 gears, JK wheel speed sensors, and massive, heavy-duty disc brake calipers and rotors. The high-pinion Dana 44 front axle is ready a bolt-in for the 2007 & newer Wrangler. The Dana 60 rear axle is configured for leafspring mounts. Adaptation of the rear axle to fit the suspension of any Jeep vehicle is the responsibility of the purchaser. Made-in-USA.
Mopar Performance Jeep Wrangler Rubicon front and rear Dana 44 axle assemblies provide the next level of off-road performance for your Jeep JK. These axles are shipped with the current Jeep Wrangler Rubicon factory suspension mounting brackets installed. They are completely assembled, with a 4.10 gear, disc brakes, and locking differential with locking sensor.
The new Mopar Dana 60™ axles are bolt-in replacement upgrades for front and rear axles on the Jeep Wrangler JK. Some of the improvements in these Dana axles are are 35-spline chromoly axleshafts, Spicer® ring and pinion gear, selectable electric lockers, SPL® 70 U-joints and full-float design. These axles have an 8 x 6.5-inch wheel bolt pattern, heavy-duty brakes with plug-and-play ABS. Axles are available with 4.88:1 or 5.38:1 gear ratios.
These exclusive bundle kits give you the key components you'll need to upgrade your Jeep Wrangler JK rear Dana 44 axle to Dynatrac 35-Spline JK44™ rear axleshafts. Fits all 2007-current Jeep JK Dana 44 rear axles EXCEPT for Rubicon models.
All the shaft your JK Dana 44 rear axle will ever need! This rear JK44 Axleshaft Bundle Kit increases the shaft diameter to from 30- to 35-spline. The shafts feature Dynatrac proprietary deep heat-treat for optimum yield strength (resistance to twisting) without making the axleshafts brittle. The shafts are U.S.-made, equipped with rolled splines and include new wheel studs, billet steel retainers, seals and all of the hardware that will be needed for installation.
Dynatrac™ offers a variety of front and rear axleshaft kits, including the 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 and significant increase in strength.
Features of the JK44 Axleshaft Upgrade Kits include:
The Dynatrac JK44 Axleshaft Upgrade Kits come with everything you’ll need to replace and upgrade the factory shafts.
The original Dynatrac™ Free-Spin™ Heavy Duty Hub Conversion Kits are popular with off-road enthusiast as well as companies who rely on their Dodge and Ford trucks for work. Free-Spin kits replace problematic unit bearings, eliminating a weak link that is prone to failure. In addition to a significant increase in strength and durability, Dynatrac Free-Spin kits improve fuel economy by reducing the components that spin in the front axle when 4-wheel-drive is not selected, and the kit provides the flexibility and robust design of manual locking hubs.