MOMO, Sparco and OMP steering wheels, boss kits and quick releases share a 6×70 mm bolt pattern, so the brands mix freely. How the parts fit together, and the exceptions.

MOMO, Sparco and OMP steering wheels, boss kits and quick releases share a 6×70 mm bolt pattern, so the brands mix freely. How the parts fit together, and the exceptions.

Why an aftermarket steering wheel or quick release needs a boss kit, how MOMO, OMP and Sparco parts mix, and when a weld-on hub is used instead.

In early April 2025 we added B-G Racing steering wheel boss kits for Citroen, Dodge and Ferrari, drilled for 6 x 70 mm and 6 x 74 mm wheels.

A customer’s fully restored Ford Escort Mk1 in Nitrous Blue Pearl, with a Dunnell Zetec, Quaife sequential gearbox and an OMP Carbon S steering wheel we supplied.

In November 2024 the OMP Carbon S went on display in our showroom: a 320mm flat dish competition wheel with carbon spokes, a suede rim and a yellow top marker.