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SuperMiata SPM863BK
Supermiata 863 Suspension Bushing Kit 90-05 MX5 Miata
Price: $369.00
Shipping Feb 2022


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Detailed Description

863 Bushing Kit "863BK"
89-05 Miata control arms


The Supermiata SAE 863 Sintered Iron Bronze Bushing Kit replaces all control arm bushings.

Why sintered Iron-Bronze?
  You might be familiar with traditional urethane bushings which rotate on a steel pin. The addition of the 863 bushing in between the urethane bushing and steel pin greatly reduces friction over a urethane on steel kit. So much so that the difference can be felt immediately. Expect to increase damping adjustment on your shocks to compensate for the large decreass in friction compared to a plain urethane or rubber bushing kit. A sintered bushing kit is the next best thing to a pure spherical bearing kit but costs less and will last many times longer due to the superior weather sealing.

What is SAE 863?
SAE 863 describes the iron-bronze alloy material, also known as "Super Oilite" or iron-copper. It is a sintered (powdered) metal that is cast into the shape of the bearing. This material is often confused with C863 bronze or SAE 841 bronze, both of which are less suited to use in suspension bearings than SAE 863.

"I already have a urethane bushing kit"
No problem. Select the lower cost Upgrade Kit and we'll send you everything you need to upgrade your existing Energy, Prothane, Powerflex or Super Pro urethane bushing kit to SAE863 bearings.

The only part that really wears in our sintered bronze bearing kit is the bronze inserts. They will last many years with just a small application of grease every year or two. You can remove for service or add zerk fittings to re-grease while still on the car. We recommend a silcone based water resistant grease like the following:

Super Lube 92150 / 92003 silcone grease
Prothane grease
Energy Suspension Formula 5
3M 08946 silicone paste
Ski-Doo XPS

Kit includes
All front and rear control arm bushings, bearings
85A durometer urethane bushings, orange
Sintered iron bronze oilite SAE 863 bearings
4130 CrMo steel pins
5 year warranty

Installing Zerk fittings

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