If there is one product that Dynatrac is best known for, it is the ProRock 60®. In 2002 the ProRock 60® set the world standard for strength, ground clearance and quality. In that same tradition Dynatrac is now very proud to introduce the all new ProRock 44™!

If you always wished for a set of ProRocks under your 4x4 but thought that the ProRock 60® was too much for your needs, your wish has finally been granted. The new ProRock 44™ has all of the same benefits as the 60, but in a smaller and lighter package that is designed to fit your Jeep TJ or JK like a glove.

New for 2011!!! The ProRock 44™ Unlimited!

The ProRock 44™ Unlimited was designed specifically for lifted JKs. The Unlimited has added steering caster engineered in to retain proper steering angles on JKs lifted 2.5” to 6”. The shock mounts are also moved to provide better shock-to-frame clearance under full articulation.

For the JK Rubicon owner, this housing is a direct bolt-in and will allow you to retain your factory brakes, knuckles, axles, gears and electric locker. For the non’Rubi owner, you can build it to meet your demands with your choice of gearing, differential and inner axle shafts. You’ll also be able to retain your factory brakes, knuckles and outer axle shafts.

Which housing is right for you? Check the downloads shown below for more information.

  • Made in the USA – Dynatrac's American-made quality and warranty is standard equipment on all ProRock 44™ housings and assemblies.
  • Dynatrac ProRock high ground clearance design (Patented), with big 3-inch”, thick wall tubing. Did you know that stock JK Dana 44 front axles only have 2.5” x .25” wall tubing?
  • The ProRock 44™ is a high-pinion Dana 44 replacement housing designed to capitalize on the advantages of the stronger “Next Generation” Dana 44 ring & pinion. Fact - High pinion gears and housings are stronger than their low-pinion counterparts when installed in a front driving axle application. The Next Generation Dana 44 gear set has a larger ring gear and a larger pinion shaft than previous Dana 44s.
  • Each housing also includes Dynatrac’s new Pro44 end forging which is much stronger than stock and very important for running big tires. They will maintain proper wheel camber even under severe use. This is a actual steel forging made in the USA, not an imported casting like the other guys.
  • Extreme-duty, steel suspension brackets are 50% thicker and much stronger than stock brackets. All are computer designed and CNC manufactured in the USA.
  • Want to add stronger shafts, change ratios, or upgrade to a locker? No problem! Dynatrac has upgrade packages to fit your budget.
  • You can buy a finished ProRock 44™ housing to build an axle in your own shop, or order a complete customized assembly from the professionals at Dynatrac.
  • Saves you money! The new ProRock 44™ has big improvements in strength and ground clearance, but lets you re-use your stock or aftermarket JK Dana 44F internal parts, and your JK wheel ends and brakes.
  • Go anywhere! Highest ground clearance of any Dana 44 axle, with the added rigidity needed for bigger tires and off-road use.
  • JK owners can finally say good-bye to bent front housings for good! No welding, No hammering, No grinding! This is not a welded-up and braced housing. It is a new housing designed from the ground-up to handle tough trails, big tires and loaded Jeeps.
  • Easy to install – Fits perfectly and bolts into your stock or lifted JK. No grinding or welding required.
  • Legendary ProRock durability for your Jeep vehicle gives you Confidence to Explore®
  • Made-in-USA – Quality and first class workmanship throughout. This is not another one of those imported, buyer-beware housings. It’s all made right here in the USA by your fellow American citizens. If you are looking at a competitors product that doesn’t say Made-in-USA, it’s because it probably isn’t.
  • Complete custom ProRock 44™ front axle housing with 12 month limited warranty
  • Custom machined Dynatrac high ground clearance, high pinion (reverse-cut) heavy duty nodular iron housing
  • Axle width 65.5” (stock JK) when outfitted w/stock wheel ends
  • Standard housing geometry, pinion angle, and wheel alignment for customer’s suspension
  • Uses Next-Gen JK ring and pinion. The Next-Gen design features a ring and pinion much stronger than Dana 44’s built prior to 2007.
  • Dynatrac Pro Series nodular iron differential cover
  • Dynatrac Jeep coil spring bracket set (Includes heavy duty brackets and installation, trac bar bracket & shock mounts included)
  • Heavy Duty 3.0” X .313”(5/16th”) wall DOM housing tube assemblies
  • Dynatrac Pro Series extra strength end forgings w/ball joints installed
  • Detailed and painted Dynatrac’s signature gloss black

    Installed Add-On Differentials - Complete w/Master Install Kit

  • Truetrac heavy duty limited-slip differential w/R&P choice and 1310 yoke
  • Detroit SofLocker differential w/R&P choice and 1310 yoke
  • ARB Air Locker differential w/R&P choice and 1310 yoke
  • Electric selectable locking differential (JK Tru Lok) w/R&P choice and 1310 yoke
  • Earlier Dana 44 end forgings are available
  • Available Add-On Ring and Pinions

  • 4.10 , 4.56, 4.88, 5.13, 5.38
  • Installed Add-On Axle Shafts & Complete Wheel Ends

  • Complete 5x5” wheel end pkg. (Includes knuckles, 30 spline outer shafts, bearings, 12” disc brake assemblies.)
  • Competition 30 spline inner axle shaft assemblies only
  • Electric locker wiring harness (Includes connectors and wires)
  • Powder coat finish (Color TBD by customer)
  • Dynatrac® Heavy Duty re-buildable ball joints
  • ARB high output on-board compressor kit
  • Bare tubes (No factory brackets or coil spring buckets)
  • RCV CV Style axle shafts
  • Custom Housing Modifications

  • Any custom width, pinion angle, brackets, tubing, etc
  • IMPORTANT NOTES

  • Conventional differentials (Example: ARB, Detroit, Tru Trak) MUST be a 3.73 & down Dana 44 carrier
  • Accepts JK Dana 44 ring and pinion gears ONLY

JK44-1X3010-A

Axle Housing Kit, Front, Pro Rock 44, JK, Electric Locker, OEM Ball Joints, 65.5" Width

JK44-1X3010-B

Axle Housing Kit, Front, Pro Rock 44, JK, Conventional Locker, OEM Ball Joints, 65.5" Width

JK44-1X3010-C

Axle Housing Kit, Front, Pro Rock 44, JK, Electric Locker, Dynatrac Ball Joints, 65.5" Width

JK44-1X3010-D

Axle Housing Kit, Front, Pro Rock 44, JK, Conventional Locker, Dynatrac Ball Joints, 65.5" Width

JK44-1X3010-E

Axle Housing Kit, Front, Pro Rock 44, JK, Electric Locker, OEM Ball Joints, 65.5" Width, .5" HD Wall Tube

JK44-1X3010-F

Axle Housing Kit, Front, Pro Rock 44, JK, Conventional Locker, OEM Ball Joints, 65.5" Width. .5"
HD Wall Tube

JK44-1X3010-G

Axle Housing Kit, Front, Pro Rock 44 Unlimited, JK, Electric Locker, OEM Ball Joints, 65.5"
Width, .5" HD Wall Tube, Extra Caster

JK44-1X3010-H

Axle Housing Kit, Front, Pro Rock 44 Unlimited, JK, Conventional Locker, OEM Ball Joints, 65.5"
Width, .5" HD Wall Tube, Extra Caster

JK44-1X3010-I

Axle Housing Kit, Front, Pro Rock 44, JK, Electric Locker, Dynatrac Ball Joints, 65.5" Width, .5"
HD Wall Tube

JK44-1X3010-J

Axle Housing Kit, Front, Pro Rock 44, JK, Conventional Locker, Dynatrac Ball Joints, 65.5"
Width. .5" HD Wall Tube

JK44-1X3010-K

Axle Housing Kit, Front, Pro Rock 44 Unlimited, JK, Electric Locker, Dynatrac Ball Joints, 65.5"
Width, .5" HD Wall Tube, Extra Caster

JK44-1X3010-L

Axle Housing Kit, Front, Pro Rock 44 Unlimited, JK, Conventional Locker, Dynatrac Ball Joints,
65.5" Width, .5" HD Wall Tube, Extra Caster

ProRock 44™ FAQ

FAQ: DOWNLOAD (PDF)

What is the Next Generation Dana 44 all about?

Tech Info Chart: DOWNLOAD (PDF)

JK ProRock 44: Choosing the Right Housing for My Jeep

Choosing the Right Housing: DOWNLOAD (PDF)

http://www.4wdandsportutility.com/tech/1104_4wd_dynatrac_prorock_44_axle/index.html
April 2011 issue of 4 Wheel Drive and Sport Utility Magazine
Dynatrac ProRock 44 Axle - 4x4 Tech
Bolt-in Axle Upgrade For JKs, TJs, And More

http://www.4wdandsportutility.com/tech/1008_4wdweb_dynatrac_prorock_44_gear_housing/index.html
August 2010 issue of 4 Wheel Drive and Sport Utility Magazine
Dynatrac ProRock 44 Gear Housing - Web Exclusive
Pumped-up Pumpkins

http://www.off-roadweb.com/tech/1105or_dana_44_based_dynatrac_prorock_jk_axle_worlds_strongest/index.html
May 2011 issue of Off Road Magazine
Dynatrac ProRock 44 JK Axle - Building the World's Strongest Dana 44
An Axle That Could Overkill