This Splined Quick-Release Steering Wheel Hub has no pins or knobs to fumble with as with other types on the market. Simply squeeze the spring-loaded steel sleeve against the back of the hub to release the locking balls. The hub is tapped for three 5/16-24 bolts (included) on a 1.75" bolt circle for attaching the steering wheel. The hub portion is machined from lightweight anodized aluminum. The release sleeve is plated steel.
The steel inner slug uses multiple splines to provide a solid, precise fit that is very resistant to loosening under racing conditions. The 5/8" smooth bore is designed to be welded to your 5/8" OD steering shaft. (It is not designed to be a "bolt-on" for any OEM splined shaft.) If your shaft is smaller than 5/8" OD, you will need to fabricate a spacer sleeve to fit between the slug and your steering shaft.
Use our 6-Bolt to American Quick-Release Hub Adapter, Part No. 3419-040 (sold separately) to mount your Momo, OMP, or Sparco 6-bolt wheel to this hub.