Steel 6 Degree Shims

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Description

These steel 6 degree tapered shims are 2 1/4" wide and machined specially for WILD HORSES to fit the unique Bronco size springs. These are not cast, and will hold up under extreme conditions. They include both 3/8" and 7/16" center bolts. WILD HORSES rear springs use the larger 7/16" bolts. Most stock and aftermarket rear springs will use 3/8" center bolts.

Tapered shims are used to help correct rear pinion angle, especially after changes are made to the rear springs or rear axle housings. Often when installing a rear suspension lift, the rear pinion angle will move downward. This may be just visible or you may feel a vibration in the driveshaft, especially under deceleration. We've found 6° to be the perfect correction for most modified Broncos. With the double-cardan style rear driveshaft found on all 66 to 77 Broncos, the proper angle is about 1 or 2 degrees below the driveshaft centerline. This angle can only be checked with the full working weight of the vehicle on the suspension. It can't be checked while still in the air, or with only partial weight of a vehicle still in the process of restoration. Bolt these shims on the spring pack above the perches of the rear housing with the thin edge pointing forward.

Note: don't use information for other vehicles that state a zero angle is required for double-cardan shafts. Broncos with leaf spring suspensions work best with this 1 to 2 degree minimal downward offset.

WARNING: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
www.P65Warnings.ca.gov
Steel 6 Degree Shims
Item #: 1188

Product Reviews

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Satisfied Customer
Jul 5, 2019  |  By Timothy Strojny
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A must when using stock driveshaft.

6 degree shims
Mar 28, 2019  |  By Dave
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These are excellent steel shims that are well made. I was dreading the install but with the help of an energy drink, I had these installed in less than 2 hours.

Easy install
Mar 3, 2019  |  By Chuck Meyer
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Haven't been able to drive her at speed yet, but the directions were great and the install was quick and easy!

6 degree steel shims
Dec 7, 2018  |  By Roger Spade
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everything worked like it should. vibration gone

6 degree pinion angles shims
Apr 16, 2018  |  By Jon
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I installed a 2.5 lift on my 70 Bronco and wasn't comfortable with the increase in drive shaft angle. After some measurements I figured the 6 degree shims would work best. The Wild Horses kit was the most complete kit I could find and the most affordable. The install was smooth as could be expected and the instructions were clear as water. I couldn't be happier with the product.

Missing Parts
Apr 15, 2018  |  By Michelle Lomier
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Product seemed to be great but when I received them but I only received the 3/8" bolts and our leaf springs had a 1/4" hole so getting the holes to accept the 3/8" bolt without having the option for the 7'16" bolts was a nightmare...... I had to use about $50 in drill bits to accomplish the job.

Seem very strong!!!
Mar 21, 2018  |  By Ryan Randolph
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These shims are steel so they can be permanent. I used them on a 2.5 inch lift with a longer transmission, so they helped with by pinion angle.

Why didn't I do this sooner?
Nov 8, 2017  |  By Mike
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Even with a 2 1/2 in lift it helped with the rear end vibration.

Shims
Sep 25, 2017  |  By Andy Mailman
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Excellent fit. Removed my driveline vibration after installing new springs.

Steel 6 degree shims
Sep 3, 2017  |  By Robert M Skidgell
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Install was easy, came with 2 different size threaded center pins for universal applications, best price from vendors.

Bronco parts
Jul 29, 2016  |  By Lance opperude
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Always great product, alway fast shipping...talk with them on the phone, very helpful and polite.

Worked Perfectly
May 22, 2015  |  By Matt D
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After installing a 2.5" suspension lift, I had a small vibration from the rear driveshaft. I measured the pinion angle and it was too steep so I ordered these. Installation was quick and easy and they got rid of the vibration.

6 degree shims
Aug 21, 2014  |  By Tim H.
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These shims virtually eliminated the rear driveline vibration in my bronco.

6 degree shims
Aug 3, 2014  |  By bud
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excellent product

awesome parts
Jul 17, 2014  |  By Jim Mangiameli
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Just received rear 5.5in.leaf springs and 6degree shims and the extreme u-bolt kit,and I couldn't be happier,these parts rock,thanks WildHorses,Jim.

6 degrees was perfect
Mar 17, 2014  |  By Paul
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With running a ZF and 3.5 SL, the pinion to driveshaft angle was severe, +9 deg. These 6 deg shims did the trick! Now its 3-4 deg.

Heavy Duty
Mar 17, 2014  |  By PaveBronco
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Wont corrode and fall appart like those other Pot metal ones.

shims
Aug 14, 2013  |  By dunacn1
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Contacted Paul at WH with my symptom, he immediately knew I needed shims for my leaf springs. Where the customer service excelled was after the sale when I was provided detailed install instructions and a follow-up to see how it went!

Shims
Feb 11, 2013  |  By Dmh
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Much better quality then I took off

MOSQUITO COUNTY STEVE
Mar 1, 2012  |  By MOSQUITO COUNTY STEVE
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COOLER THAN "DANG IT" I WISH I HAD DONE THESE 6 DEGREE SHIMS 20 YEARS AGO. NO MORE BRONCO CLUNK OR VIBRATION. IF YOU HAVE THE BRONCO DRIVESHAFT CLUNK/VIBRATION THEN DO THIS IMMEDIATLEY. YOU WILL NOT BE SORRY! '73 WAGON, BUITL WINDSOR, HEAVY BUMPERS & WINCH, WH 3.5" LIFT.

MOSQUITO COUNTY STEVE
Feb 21, 2012  |  By MOSQUITO COUNTY STEVE
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GREAT PRODUCT AS USUAL. IF RE-DRILLING SPRINGS TO THE 7/16ths SIZE, IT IS VERY DIFFICULT.

OZZY
Oct 16, 2011  |  By David Card
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I needed my pins fast. you guys got them to me just like you said by Wednesday. I left the next mourning for an event in NH. And while checking the pin I broke 3 weeks earlier, I noticed that the other side had broke, I had not even gotten on the trail, and needed a new pin. It all worked out, then I split my steering box for the second time, still had a blast.

Great Shims
Jul 26, 2011  |  By Jeff Dias
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Bronco was chewing up U Joints. Theses shims worked great. Truck has 3 1/2" lift.

6 Degree Axle Shims
Jul 11, 2010  |  By BDiefAZ
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Great product, excellent quality, and solved driveline vibration issue on my Bronco with 3" lift. I would reccomend this product, my only regret is that I did not install these sooner.

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