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Yukon Gear & Axle

Yukon Gear & Axle (YGK012) Gear & Install Kit for Jeep JK non-Rubicon 4.56 Ratio

    • Based on 317 reviews
Condition: New
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Availability: Only 8 left in stock, order soon!
Fulfilled by Performance Pros
Arrives May 5 – May 7
Order within 17 hours and 43 minutes
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Style: Jeep JK non-Rubicon 4.56 Ratio


Features

  • Includes Front/Rear Ring Pinion Gear Sets
  • Includes Front/Rear Differential Rebuild Kits
  • Matching Gears in a 4. 56 Ratio
  • Manufactured for dependable high performance
  • Yukon products are built to the highest standards

Description

Ring and Pinion Gear Sets from Yukon Gear and Axle are designed to perform in the most demanding of conditions. Our Gear Install Kits are a simple, single purchase for those looking to upgrade a four wheel drive vehicle with these high performing ring and pinion gears.


Manufacturer: ‎Yukon Gear & Axle


Brand: ‎Yukon Gear & Axle


Model: ‎Gear & Install Kit for Jeep JK non-Rubicon 4.56 Ratio


Item Weight: ‎37.8 pounds


Product Dimensions: ‎12 x 16 x 20 inches


Item model number: ‎YGK012


Exterior: ‎Machined


Manufacturer Part Number: ‎YGK012


OEM Part Number: ‎YGK012


Date First Available: January 10, 2014


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 5 – May 7

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • 4.0 out of 5 stars Solid set
Style: Jeep XJ/YJ Dana 30 front Model 35 rear 4...
It comes with Timken bearings and Spicer seals. It didn't come with the right seal for my dana 30 so I did have to buy a set separately wich was pretty annoying and don't come with axle bearings and output seals for dana 35 but the components that are there are good quality
Reviewed in the United States 🇺🇸 on March 31, 2023 by Nicki Brown
    • 5.0 out of 5 stars Super fast shipping
Style: Jeep XJ Dana 30 Front Chrysler 8.25” Rea...
Review Image by Sean Sean
I dont think its sellers fault but amazon says these will fit a 2000 xj but 2000 is when the xj swapped to low pinion dana 30s with standard rotation so these will not fit even though amazon says they will
Reviewed in the United States 🇺🇸 on March 31, 2023 by Sean Sean
    • 5.0 out of 5 stars Nice complete set!
Style: Jeep JK Rubicon 5.38 Ratio
This job isn't for the faint at heart. That being said, everything about this job that sucks has to do with disassembly. Finding the correct tools, stuck parts, seized bearings, etc. Assembly was awesome. This set includes everything required and then some. Two sets of ring gear bolts for both front and rear to cover two different sizes, plenty of loctite, black RTV, yellow gear pattern layout paint, two crush sleeves for each front and rear seats, Timken bearings, a ton of shims, and plenty of decals to finish the job. I had good patterns front and rear with little to no adjustment. Get a 2 gallon jug of oil, that'll cover both ends as well as an oil change after break-in. As for ratio, I couldn't be happier. 4:10 is too high for 3.8 auto, 5:38 pulls way better and I still tach 2300 or so at 60mph with 33s. As for mileage, I feel it will stay the same if not improve by preventing low RPM lugging of the engine with insufficient torque. My trip computer is showing improvement if that means anything to you. I used OBDJscan to program gear ratio and tire size, speedo is dead on with my phone GPS. Go to the Yukon website for more updated bolt torque info than is provided in the leaflet. Good luck, happy Jeeping. See you on the trails! Update 10/5/22 I've been running this set for a few months now and have had zero issues. I changed the oil out after initial break-in and inspected the gears, and looked for bearing debris in the case, oil was dark with the expected goo-like filings around the magnet. No large or shiny bits at all. Gears and bearings are quiet. Fuel mileage has decreased slightly in town, haven't put enough highway miles on to say about highway mileage. Hoping to get 35" tires soon so that will play a huge part in the equation. ... show more
Reviewed in the United States 🇺🇸 on July 10, 2022 by Steven Lamb
    • 3.0 out of 5 stars A complete rebuild kit, but I think next time I'll go with another brand.
Style: Jeep JK Rubicon 5.38 Ratio
Review Image by seth seth
Review Image by seth seth
Review Image by seth seth
Review Image by seth seth
The Good: Everything you need is in the box. Shims/bearings/extra crush sleeve/gear paint/new bolts Instructions are well laid out for someone experienced with this type of install Took two full days and for myself and someone well experienced to completely overhaul both Diffs as well rebuild U-joints in a well equiped Farm Shop. (This included a trip to the parts store, lunch breaks and beer breaks) The Bad: Yukons Torque specs for the Dana 44 (55ftlbs) and Dana 44 JK (125ftlbs) ring gear bolts were misleading. I'm working on a JKRubicon which does have D44 front and rear, however the front is not as robust as the rear. We took the "jk" specs and torqued the front to match the rear and spun a bolt before realizing we needed the D44 specs. The rear gear on the Rubicon uses larger bolts that can handle the load, the front are smaller and cannot. Luckily the supplied bolt failed before the carrier/ring did so it was salvagable. I just think the instruction book should state "Dana 44 JK Rear/Rubicon" The Ugly: Pinion Gear, Bearing Race (and even their chromoly axles) came chipped and damaged. I'd like to blame the axles on UPS as they were wrapped loosely in plastic and could have been banged around when handled. But the race and pinion gears were very well protected, vacuum sealed and wrapped in styrofaom with undamaged boxes. I could only assume this came from the factory in this way. This next fault is above my knowledge so bare with me. According to my mechanic and his boss, there was some sort of pre-written depth that was to be etched on the gears from testing in the factory. They've used this info in the past on TJ's, JK's, Ford's and several drag vehicles to help with their own projects. however were very upset at this kit, a couple homemade jigs were bolted onto my axle housing to confirm their suspisions and after several measurements and some head scratching I was told "throw those numbers out" Performance: I have a 2008 JKR 3.8L w/auto trans on toyo 35x12.5x17 AT's. Before-17.5hwy 1900rpm @65mph with lots of downshifting. After- 16.5hwy/13city 2500rpm @65mph and it doesnt give a damn about hills anymore. In 4-lo it will crawl up mild trails with no input from the throttle, moderate trails take 1/4 the amount of skinny pedal to get up. So much torque to the ground, its amazing. I've put ~2500 miles on these gears with a mix of long hwy trips, city commutes and rough days on the trails and I havent heard or felt any bad noises from either the front or rear and imagine that when I go to 37's it'll still feel like I have plenty of power. ... show more
Reviewed in the United States 🇺🇸 on May 13, 2020 by seth seth
    • 5.0 out of 5 stars very fast shipping A+++++
Style: Jeep XJ Dana 30 Front Chrysler 8.25” Rea...
parts were as expected. fast shipping. the rest of amazon should be the same
Reviewed in the United States 🇺🇸 on December 19, 2022 by richwit
    • 5.0 out of 5 stars Don't even hesitate
Style: Jeep JK non-Rubicon 4.88 Ratio
Review Image by xcpointx xcpointx
35" tyres. 3.73 ratio. My Wrangler was one hell of a slouch and such a pain to drive. With the 4.88 Yukon set the absolute joy of this vehicle has returned. You will definitely not regret this upgrade in any way at all. This engine loves the higher revs at 5th gear and delivers better fuel efficiency against the airflow on that flat windscreen. My installer loved this set and there is zero noise of any kind between this and stock. ... show more
Reviewed in the United States 🇺🇸 on July 16, 2022 by xcpointx xcpointx
    • 5.0 out of 5 stars Great kit.
Style: Jeep TJ Rubicon 4.88 Ratio
Great kit, everything is very high quality and fit perfectly.
Reviewed in the United States 🇺🇸 on July 2, 2022 by David Strate
    • 1.0 out of 5 stars horrible warranty...
Style: Jeep JK non-Rubicon 4.56 Ratio
Review Image by John N John N
Review Image by John N John N
Review Image by John N John N
Review Image by John N John N
Review Image by John N John N
Review Image by John N John N
Bought these gears in August 2021, had them installed into my jeep JKU with 35" tires in October 2021. Here we are in march 2023 and the pinion gear broke. Vehicle is mainly a pavement princess, rarely even driven on grassy parking lots..... Called Yukon and discovered they only have a 12 month warranty on them by default unless you buy their Y.E.S. extension within 30 days of buying the gears for the lifetime warranty..... I didn't even know about the Y.E.S. programs as I ordered them off Amazon. Very disappointed as I thought I had bought a quality product..... I am now reading reviews out there with similar problems..... Stay away from this brand.... the attached pictures are of the exploded pinion gear after 15 months and 7500 miles of blacktop driving, never in mud once... Cheap steel most likeley or horrible heat treating ... show more
Reviewed in the United States 🇺🇸 on March 20, 2023 by John N John N

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