NP231 Slip Yoke Eliminator Kit for 87-06 Jeep TJ/YJ/XJ - 50-7907
Product ID: 188357383
🚙Boosts off-road durability & performance
⚙️Converts slip yoke to fixed yoke
🛠️Includes full transfer case modification kit
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⚙️ Upgrade your Jeep’s heart for unstoppable off-road adventures!
The Rough Country NP231 Slip Yoke Eliminator Kit transforms your Jeep’s NP231 transfer case by replacing the vulnerable slip yoke with a fixed yoke, dramatically enhancing off-road durability and driveline stability. Designed for 1997+ Jeep YJ, TJ, and XJ models, this precision-machined kit includes everything needed for a complete transfer case modification, requiring an extended travel driveshaft to eliminate vibration and prevent rear output shaft failure. Trusted by enthusiasts and backed by a limited lifetime warranty, it’s the essential upgrade for serious Jeepers demanding reliability on every trail.
| ASIN | B084ZYHPPR |
| Best Sellers Rank | #77,142 in Automotive ( See Top 100 in Automotive ) #12 in Automotive Replacement Transfer Case Components |
| Brand | Rough Country |
| Construction | Drilling Required: No |
| Customer Reviews | 4.7 4.7 out of 5 stars (185) |
| Date First Available | April 3, 2020 |
| Exterior | Machined |
| Item Weight | 15 pounds |
| Item model number | 50-7907 |
| Manufacturer | Rough Country |
| Manufacturer Part Number | 50-7907 |
| Model | Rough Country NP231 Slip Yoke Eliminator Kit for 87-06 Jeep Wrangler TJ/YJ | 84-01 Cherokee XJ - 50-7907 |
| Position | Driveline, Rear |
| Product Dimensions | 17 x 7.75 x 5 inches |
| Special Features | Works with NP231 Transfer Cases ONLY. |
J**.
Great value kit
The kit was well put together and every part fit as expected. It seems to be a quality kit and the fit and finish is nice. I had no problem installing the kit, the only down side is when it comes to the shifting fork. Depending on the year for you jeep, you will have to cut the longer portion of the shift fork rod so that the case will fit back onto the transfer case. The included instructions did not mention this fact, but if you look on Rough Country's website, it is detailed out. Once cut the case sealed back up and has been functioning fine. Do yourself a favor, and order a rebuild kit while you're in there. It is ease to do and since all the parts are indoor face, rebuild it.
E**E
Direct fit no problems, been dogged through the woods already in 4L. I’d say it’s great! 200+hr
Fit great, tj speedo didn’t work. Great quality, very stout! Easy to install! Fit perfectly! Great value for the money!
C**Y
bought for a 99 TJ
work great, zero issues with function or installation. have a 4 in lift and needed this for a cv style driveshaft
T**K
Easy Install and Must for Lifted Jeeps
This is a must for any height lift . Don't bother with crossmember shims that do not correct the vibration after a Lift. I have an RC 2.5" Lift and the ride before this install was rough. I've tried correcting all the drivetrain angles but nothing helped. I managed to do this install without removing the NP231 Transfer case from the vehicle. I don't see any reason why you should. With all the youtube vids that I've watched . All had them remove it from the vehicle. Not necessary imo. Took me about 2 hours to remove and install. The ride now is back to stock non lifted jeep. I could not believe how smooth the ride is now. So don't waste your time on shims. Get this kit along with a new double cardan driveshaft and Enjoy the smooth ride again.
W**N
Fits 2000 Jeep cherokee XJ
Pretty easy to install and works perfectly. Dont forget that you will need a new rear driveshaft after doing this upgrade. Pro tip on the Jeep XJ after installing the new SYE, if you are at stock height or close to it as a temporary fix you can use the front driveshaft in the rear until you get a new one.
P**M
Great quality parts
Great quality parts in this kit and easy enough to install if you've watched a couple of YT videos. Its very important to note that because you're going from a slip yoke to a fixed yoke on the rear output you will need to order 4 yoke bolts to connect the new output yoke to your new driveshaft as they're not included in this kit, or with most new drive-shafts. Don't get caught short. They are the same size bolts that hold thr front driveshaft onto the front output yoke and cost about $15 for 4 on Amazon.
S**S
Much better than the pictures make it out to be!
I installed mine this weekend, it went together perfectly. When trying to order a new driveline, I went back to the amazon listing to see if it showed the yoke size. I noticed that in the picture the shaft is in the housing backwards. haha, whoops! Pay no attention to the pictures, the kit is great, and comes with everything you need. The biggest difficulty I had was removing the old spring clips. Those things are the devil even with spring clip pliers!
F**E
Fit perfect on my 1995 Jeep Wrangler YJ 4.0
Get a NP231 Transfer Case Rebuild Kit while you're at it ;) Everything fit perfectly. Worth it if you have a 4" lift or more. Just remember you'll also need a new rear driveshaft and hey, while you're at it, just fork over the money for a new front driveshaft. I suggest Tom Woods. Rebuild the transfer case, install this SYE kit, then measure for your new driveshaft. Lots of YouTube videos out there. I followed JeepSolid because he has a 3-part video on rebuilding an NP231. And then a video on installing this SYE.
O**Z
Cumple
R**E
I got this and went to Sharjah and made a custom driveshaft for my cherokee. Saved me lots of time and money on shipping a new driveshaft. Result: Removed 90% of driveline vibrations from the car. ✅ The 10% are because its a jeep. No vibes, no drives.
J**S
Installed this on my 2000 XJ with the NP231. Install was smooth, no issues. Didn’t come with instructions but loads of YT vids to watch. Slightly larger tolerances on the machining of the output shaft than the OEM I pulled but only a couple thou. Installed it last week and haven’t driven it much. Will update after a couple wheeling trips
R**Z
Todo excelente 👌 aun no lo monto en mi jeep wrangler yj 1994 pero todo parece estar bien
A**R
Works great and an easy install. Also works great with their driveshafts.
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