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Rugged Ridge Heavy Duty NP231 Slip Yoke Eliminator Kit (88-06 Wrangler YJ & TJ)

Market Price $311.99 You Save 25% ($78.00)
Our Price

$233.99 (kit)

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  • Item J12680
  • MPN# 18676.60

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Features, Video & Details

  • Kit Contains Transfer Case Main Shaft, Aluminum Rear Output Housing, Bearings, Seals, Snap Rings, Bolts
  • Transfer Case Main Shaft Delivers 54 Percent More Torque Than the Original
  • Transfer Case Main Shaft Minimizes Driveline Vibration and Improves Bearing and U-Joint Life
  • Compatible with 1987-2006 Jeep Wrangler Models

Review & Installation Video

Review & Install Video

Kit Contents. The Jeep Wrangler Slip Yoke Eliminator Kit contains a short redesigned transfer case main shaft with 18 percent larger spline diameter and delivers 54 percent more torque than the original. It also contains aluminum rear output housing, bearings, seals, snap rings, bolts, and instructions for convenient installation.

Functional Usage. The transfer case main shaft in this Rugged Ridge Heavy-Duty NP231 Slip Yoke Eliminator Kit helps decrease driveline vibration caused by taller suspension lifts. It allows for the use of a longer drive shaft that reduces drive shaft angle and improves bearing and U-joint life.

Fitment. These Rugged Ridge jeep accessories are designed to fit 1988-2006 Wrangler Jeep models.

Fitment: 1988 1989 1990 1991 1992 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 Details

What's in the Box
  • (1) Rear Output Housing
  • (1) Rear Output Seal
  • (1) Main Output Shaft
  • (2) Snap Ring for Speedometer Gear
  • (1) Snap Ring for Mode Gear
  • (1) Rear Output Spline Seal
  • (1) Rear Output Bearing
  • (1) Rear Output Yoke
  • (1) Yoke Nut
  • (1) Speedometer Drive Gear
  • (1) Rear Output Bearing Snap Ring
  • (1) Front Output Spline Seal
Installation Info
Will it fit my Wrangler?
  • YJ - 88, 89, 90, 91, 92, 93, 94, 95
  • TJ - 97, 98, 99, 00, 01, 02, 03, 04, 05, 06
  • TJ Unlimited - 04, 05, 06

People Who Bought This Item Also Bought

Most Helpful Reviews

5/5
New slip yoke

Very good product came with everything it was supposed have with it and install was no problem and came in really fast without ordering over night shipping. Will definitely be ordering from them again ...

Read More
Helpful (3)

4/5
Excellent value for the price.

The SYE kit was very complete and included all of the seals and clips required to complete the job. In the kit I received there was a very minor machining error on the tail housing which caused interference ...

Read More
Helpful (3)

Overall Rating 4.8 out of 5 stars
Read All 12 Reviews

Customer Photos (4) Submit Your Photo

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7 Questions / 6 Answers

Ask a Question

Thinking about buying this Slip Yoke Eliminator Kit.... What additional Parts would you suggest purchase of? I dont want to install this and then need additional parts...

PaulH

  • It would be a great idea to replace the chain inside as well as any worn parts you may find. Depending on the condition of the internals and the amount you want to spend we would recommend a new chain and master rebuild kit to make sure everything is new and ready to go.

    Ryan H

Helpful (0)

I have a 2005 Jeep Wrangler Unlimited LJ with 4 inch lift running a Dana 35 rear axle. Will this kit work and what drive shaft would you recommend?

WarrenQ

  • With the information that you provided about your Wrangler, I would suggest going with these two items instead: Rugged Ridge Mega Short Slip Yoke Eliminator Kit w/ Speed Sensor (Item #: J14556) that can be found here: https://www.extremeterrain.com/rugged-ridge-mega-short-tj-yj-1867672.html And the Rugged Ridge Rear CV Driveshaft For Mega Short Slip Yoke Eliminator (Item #: J13941) which can be found here: https://www.extremeterrain.com/rugged-ridge-rear-cv-for-w-tj-1659206.html

    TerriB

Helpful (0)

What drive shaft will i need, i have a 05 wrangler sport with a 3in teraflex lift. Will this sye also work?

DevinT

  • The slip yoke eliminator kit is not dictated by lift amount. It would be your new driveshaft that matters. This is a fixed yoke conversion kit that does away with the factory slip yoke. I would recommend the Rugged Ridge CV Rear Driveshaft w/ 2 to 6 in. Lift. -https://www.extremeterrain.com/omix-ada-cv-rear-driveshaft-tj-1659205.html

    TerriB

Helpful (0)

What driveshaft will i need installing this on an 87 Wrangler with no lift?

CarlG

  • Hello, if you are not lifting your YJ and increasing the angle between the rear axle pinion and the slip yoke this Rugged Ridge Heavy Duty NP231 Slip Yoke Eliminator Kit (88-06 Wrangler YJ & TJ) is probably not be necessary. With over 3" of lift a driveshaft like this will become necessary: http://www.extremeterrain.com/omix-ada-cv-rear-driveshaft-yj-1659202.html

    XTMerideth

Helpful (0)

I need a driveshaft also. I have this kit which driveshaft do I need to go with this kit? 4 inch lift

Anonymous

  • Thank you for your question! With 4 inches of lift you will need a longer driveshaft. Unfortunately I am unsure what year your Jeep is to make any suggestions, you can always call in or email us and we would be happy to assist you in picking out new driveshafts for your Jeep! Also, driveshaft can be found under our "Drivetrain" tab at the top of the page!

    XTHelenW

Helpful (0)

I'm confused do I still need to get a different driveshaft with this kit? I didnt see anyone say they did but when I go to the driveshaft section all of them say its necessary. It states " a necessary piece when you’re using the slip yoke eliminator kit on new process 231." So the SYE kits are not complete then? Little confused. Thanks

chicago1

  • Hello, for the Rugged Ridge Heavy Duty NP231 Slip Yoke Eliminator Kit (88-06 Wrangler YJ & TJ) you will need to get a longer Driveshaft, and that will also depend on the size of your lift.

    XTNunoP

Helpful (0)

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Customer Reviews (12) Write a Review

Overall Rating 4.8

out of 5 stars

  • Fit 4.75 4.8
  • Bang For Your Buck 4.916667 4.9



  • 5/5

    June 27, 2016

    New slip yoke

    Very good product came with everything it was supposed have with it and install was no problem and came in really fast without ordering over night shipping. Will definitely be ordering from them again when or if I need something else. Thanks

    Ratman

    Year: 2006Submodel: Wrangler

    Helpful (3)

  • 4/5

    March 13, 2015

    Excellent value for the price.

    The SYE kit was very complete and included all of the seals and clips required to complete the job. In the kit I received there was a very minor machining error on the tail housing which caused interference with the shift rail restricting it's movement. After identifying the area of interference, a couple of soft passes with a die grinder was all that was needed to provide ample clearance. Over a thousand miles later and it's working like a charm.

    JohninWY

    Year: 1995Casper, WY

    Helpful (3)

  • 5/5

    September 11, 2015

    Rugged Ridge Heavy Duty NP231 Slip Yoke Eliminator Kit (88-06 Wrangler YJ & TJ)

    I found the product to be very easy to install. The instructions explained everything from start to finish. It is worth every penny. I would recommend and use this product for future builds.

    demonmonkey64

    Year: 1998Virginia, USA

    Helpful (2)

  • 5/5

    June 15, 2015

    Great product

    Strong product and great performance. Recommend to anyone.

    Rogue04lj

    Year: 2004Charleston, SC, USA

    Helpful (2)

  • 4/5

    January 22, 2013

    missing parts overnighted

    I ordered the Rugged Ridge kit because I had installed one before. When it arrived, I only got the main shaft, tail housing, and yoke. I called Extreme Terrain and explained that all the small parts (snap rings, speedo gear, and yoke nut) were missing. They contacted OMIX-ADA, who I guess is the supplier for Rugged Ridge, and I had the parts in hand the next day. There's other more expensive SYE kits out there, but this one works - Once you have all the parts!

    Deuce

    Year: 1998Malvern, PA 19355, USA

    Helpful (2)

  • 5/5

    January 18, 2013

    Good product

    Was easy to install I just watched video on you tube and installed it. Been driving with it for 4 months no problems.

    Sean118

    Year: 1995OKC Oklahoma

    Helpful (2)

  • 5/5

    September 10, 2017

    I did this in my driveway.

    Like the title says. It's not complicated. I watched a few videos on line and knocked it out in a couple hours. Fast, easy and effective. So far so good.

    GregP

    Year: 1994Submodel: Wrangler

    Helpful (1)

  • 5/5

    June 12, 2017

    Should have done this a while ago

    It's great to get my ground clearance back. When I had the lift installed a while ago, I should have just bit the bullet and purchased this and installed it. Instead, i wasted tons of time and money working with the diff drop kit and all that was invovled with getting that to work right. One issue with fit. The 4WD lever would not work right after installation and the mechanic had to hog out the hole in the transfer case.

    dwcfastrice

    Year: 2003Submodel: Wrangler

    Helpful (1)

  • 5/5

    September 23, 2015

    Awesome Product

    Awesome product, easy to install and accomplished what I needed. No more drive line vibration.

    Kirby

    Year: 1997White House, TN, USA

    Helpful (1)

  • 5/5

    January 20, 2015

    life saver

    Great investment- easy install, a must have for jeep owners

    allan22

    Year: 1989

    Helpful (1)

  • 5/5

    January 16, 2015

    Easy Install

    The install of the Rugged Ridge Slip Yolk Eliminator was easy even for a novice like me! The slip Yolk Eliminator is working wonderfully with my 4" lift and new drive shaft.

    Chuck42

    Year: 2004Conroe, TX, USA

    Helpful (1)

  • 5/5

    March 06, 2014

    np231 SYE awesome

    This product shipped very quick, great price. everything you need for a lifted Jeep. very easy to assemble. If needed, I'll buy another one

    MANOFSTEEL78

    Year: 1989Paducah,

    Helpful (1)

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