Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back > Reviews > Transfer Case > SYE Kits > JB Conversions NP231J - HD Standard Length SYE

WIN a Rough Country Forged Track Bar - ExtremeTerrain!FREE, FREE, FREE EVENT!! Save big on Lockers now till ApriJKS Grand Cherokee WJ, Adjustable Front Trackbar 1"-6

JB Conversions NP231J - HD Standard Length SYE Reviews, Ratings, Specs & Prices
Review Categories
  Differential Guards
  Rocker Guards
  Roll Cages
  Skid Plates
Audio, CB, & Electrical
  Audio Players
  CB & Ham Radios
  Axle Shafts
  Body Lifts
  Consoles, Security & Storage
  Exterior Accessories
  Fender Flares
  Lighting, Lenses & Bulbs
  Roof Racks & Cargo Areas
  Internal Parts
  Motor Mounts
  Throttle Body
  Winch Cable and Hooks
  Complete Lift Kits
  Control Arms
  Steering Stabilizers
  Track Bars
Tires & Wheels
Transfer Case
  SYE Kits
  Transfer Cases
Previous Product SYE Kits Next Product

JB Conversions NP231J - HD Standard Length SYE

Email This Bookmark Print This Review      Find On: |

Product Information

MSRP: $750.00
Average Price: $252.14
Manufacturer: JB Conversions
Yes: 15 / No: 0

Standard Length Slip-Yoke Eliminator kit.


Login or Register to Add Review

Registered User
indeepwithajeep's Reviews
05-18-2015, 01:32 PM
Price: $230.00
Pros: Strong Well engineered Added seal kit Quality parts used
Cons: None
Recommended? Yes

Comments: Well thought out and engineered kit. It also comes with quality seal kit for the transfer case which is nice since you have it apart already.


Hell on Wheels
The_Goob's Reviews
11-07-2014, 10:14 PM
Price: $125.00
Pros: install wasnt hard, does intended job
Cons: no
Recommended? Yes

Comments: Pretty self explanatory. A nice SYE to get better driveline angles.

Registered User
love2offroad's Reviews
10-05-2013, 01:41 AM
Price: $199.99
Pros: Just put it on so I'll let you know
Cons: None at this time
Recommended? Yes

Comments: I just put it on and waiting on a drive shaft so haven't used it yet


Registered User
chinookgod's Reviews
08-13-2012, 07:22 PM
Price: $300.00
Pros: does the job
Cons: none
Recommended? Yes

Comments: just what you would need for any life above 4". great at drive angle reduction


Registered User
cfmiller58's Reviews
01-26-2012, 10:44 PM
Price: $180.00
Pros: Easy to install with case still in jeep
Cons: none
Recommended? Yes

Comments: Easy to follow directions and quality manufacturing.


Registered User
Cavguy1965's Reviews
03-03-2011, 05:22 AM
Price: $199.00
Pros: Easy to install, stronger than stock
Cons: none so far
Recommended? Yes

Comments: Put this in when I did the AX-15 trans swap. So far so good!

Registered User
Hamms's Reviews
12-20-2010, 02:15 AM
Price: $200.00
Pros: Shorter JB conversion yoke 32 spline output shaft
Cons: None
Recommended? Yes

Comments: Top notch quality, a must to install a double-cardan drive shaft and a end to drive line vibrations.


Registered User
+Crusader+'s Reviews

09-28-2009, 06:49 AM
Price: $299.00
Pros: Works perfect, quality parts.
Cons: Instructions are 8 out of 10.
Recommended? Yes

Comments: After some research on which was the "best" kit to buy, I picked up the JB offering from Tom Wood's and it is one of the last of the narrow shaft designs. That saved me from having to remove the factory needle bearings in the transfer case like you have to do with 99% of the kits out there. The others work fine, just this one was less work, and I prefer needle bearings myself.

Install was easy, but I got a tad confused reading the instructions as they were universal and geared more towards a TJ. Doesn't take much thought to work through it though. Make sure you use RTV silicone on the splines of both input and output shafts where the yokes slip on. That will minimize the possibility of leaks and was a tip from the pros at TW. Anyhow, the parts fit PERFECT and are well made, but best of all this kit increased my driveshaft length, and got rid of all my vibrations (with TW driveshaft).

Get rid of that TC drop kit ASAP.


Registered User
Sidewinder's Reviews
09-23-2009, 06:11 PM
Price: $199.00
Pros: pretty easy to install. works well
Cons: none
Recommended? Yes

Comments: Good price. Good product


She's my density...
Leans93's Reviews

01-19-2009, 10:14 PM
JB Conversions NP231J - HD Standard Length SYE
Price: $200.00
Recommended? Yes

Comments: Working great so far! Bearings were easy to remove. Kit came complete except one snap ring was too thick so I had to reuse my old one. Otherwise install was a breeze.

Deadman 94 xj
Registered User
Deadman 94 xj's Reviews

11-26-2008, 06:07 AM
JB Conversions NP231J - HD Standard Length SYE
Price: $250.00
Recommended? Yes

Comments: No leaks. it has held up great to the abuse.......................................

Registered User
YJ_Auzzy's Reviews

09-26-2008, 09:23 AM
JB Conversions NP231J - HD Standard Length SYE
Price: $750.00
Recommended? Yes

Comments: takes the vibes out and allows ya to raise your skid pate back up and all that good stuff!! definently recomended. got both drivelines built for high angles and high stress by a local company.

Registered User
than90yj's Reviews

07-04-2008, 11:17 PM
JB Conversions NP231J - HD Standard Length SYE
Recommended? Yes

Comments: Pleased with this kit so far. Great service from JB Conversions. Would recommend this kit to anyone needing a solid yolk and CV shaft at an affordable price.

Registered User
hoghandler's Reviews

05-20-2008, 03:17 AM
JB Conversions NP231J - HD Standard Length SYE
Price: $185.00
Recommended? Yes

Comments: Rides way better than stock, got rid of all vibe i had when i installed the new cv driveshaft with it

Matt Graham

Registered User
Matt Graham's Reviews

04-10-2008, 09:42 PM
JB Conversions NP231J - HD Standard Length SYE
Price: $213.00
Recommended? Yes

Comments: Great. Install was fairly straight forward, although I'm glad I had somebody there that had done it before. JBC was very helpful over the phone. Instructions were good. I was very pleased with the kit. $213 shipped.

Similar Threads
ThreadForumRepliesLast Post
OMIX-ADA Mega Short SYE NP231J SYE Kits 2 10-17-2013 07:26 PM
JB Conversions NP231J HD Super Short SYE SYE Kits 18 01-04-2011 10:20 PM
J.B. Conversions Inc. NP231 HD w Super Short SYE SYE Kits 8 01-03-2011 05:01 PM

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. is not in any way associated with Jeep or the Chrysler Corp.