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Brand: SPA Design Racing Products
Superb quality, virtually no play, used by many F1 and F3 constructors!
The special asymmetric spline allows mating the hub in only one orientation. You will never end up with a cock-eyed steering wheel. Disconnect by pulling the spring-loaded outer collar to release the four locking balls.
Aluminum construction except for the 4130 steel center slug which gets welded and/or pinned to your steering shaft. The outside diameter of the slug is 29.5mm (1.16)"). Drill out the slug to slip over your steering shaft, or turn down the slug OD to slip into a matching bore in the steering column. If the steering shaft is also 29.5mm OD, you can drill one and turn down the other or just add a sleeve over both. The hub attaches to your 6-bolt Momo, OMP, or Sparco steering wheel (six 5mm bolts on a 70mm bolt circle). 23mm splines. FIA and SFI approved.
Note: This item is not compatible with the "Racetech" brand hub.