Flat & Finished Yokomo Differential Ring Set (2) by TKO

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Frederick, MD

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This product was added to our catalog on April 9, 2015.

This is an optional TKO Flat and Finished Yokomo Differential Ring Set, intended for use with the Yokomo YZ-2 and B-Max series vehicles equipped with a ball differential using the Yokomo B2-506 diff rings (YOKB2-506).

TKO's Flat and Finished Diff Rings use their Totally Flat Technology to produce the Finest Diff Rings available. Using the TKO proprietary process these rings are produced with the faces flat to within 2 microns and are parallel to within 1 micron with a #7 finish (one micron is 40 millionths of an inch - 0.0000040). After processing, the rings are checked with an optical flat and monochromatic light; the ultimate measurement for flatness.

Note: Wipe rings with alcohol or motor spray before installing.

Tyson Blood
Verified Owner
Thursday, Feb 8 2018 (2 weeks ago)
TKO Flat & Finished Yokomo Differential Ring Set (2)
These rings my be the flattest rings on the planet, but they don't seat properly around the outdrives. the inner circle of the rings are too large and don't fit around the inner part of the outdrive so when you put your diff together the rings aren't parallel causing the diff to not work correctly. Ordered two sets, first set couldn't figure out why my car was way off and the diff wasn't working properly and second set I figured out why they weren't working. I'm sure if your able to seat them properly before putting diff together they will work great, so be careful installing these onto your outdrives and before you put your diff together. Make sure they are seated all the way down.

I suppose you could sand or dremel the inside hole a smidge to make it fit better.)