Shift Happens, and we're here to help!

• While the OEM Brass rings worked fine in the day, they did not do well under aggressive driving situations for long.

• Most non OEM Brass rings are not very good, to put it mildly. They are made of a different material (softer) and the tolerances are horrible. I am speaking in general terms of course but if you are reading this you are well aware of these issues.

• Our Steel Synchro rings are built to exacting tolerances that are consistent. There is no rocking on the cones in fact, putting a slight pressure on the ring onto the cone of the gear will lock it on.

• Our Steel rings have the same coefficient of expansion as the gears themselves unlike Brass rings that expand more, making the tolerances worse at operating temperatures.

• The steel rings do not crack, deform or wear like brass one do.

• The Carbon Friction surface covers the cone on the gear 100% for a better coefficient of friction. OEM rings only touch the gear cone about 40% at best.

• The ID of the OEM rings uses points that are threadlike and wear rapidly. When the points are worn the ring does not have the braking power to adequately slow or speed up the engaging gear making the transmission balky or hard to shift.

• The steel / Carbon combination does not compress like the brass rings do.

• Note; More and more OEM transmission manufactures are using steel / carbon rings in new cars. Yeah, it wasn't my idea; I just saw a need and am trying to fill it.

• Do not use Red Line products at this time, there have been a few failures reported from those using MTL. We have been working with a Redline engineer and have come to the conclusion that some of the esters in the Redline products may cause delamination of the carbon from the steel.

• Good question, the honest answer is, I don't know yet. It is suggested the World Class T5 that comes with brass, fiber lined rings uses ATF which I can go with however; they are using a rollerized mainshaft unlike most older transmissions. I have had shaft / gear galling issues over the years while using GL4 type oil so I wouldn't recommend using ATF in a non rollerized mainshaft transmission.

• I do like Swepco 201 gear oil, its a good GL4 type, non-foaming formula that I have used in everything from Hewland to the lowly Triumph transmissions with good results for almost 50 years. I first learned about Swepco oil from the guys at Gurneys shop, they were still running Indy cars at the time.

• Any GL4 (non synthetic) gear oil will work fine.

You will notice immediately that you transmission shifts smoother and is way less fussy and, that your problem spots like downshifting into first gear are not only doable but shift with ease.

We are constantly working on more models and, yes we can do special orders. Please email us for more information.