HKB Sports is a Japan-based specialist in high-quality steering wheel boss kits, engineered to deliver seamless, plug-and-play installation of aftermarket wheels across a broad range of vehicles.

Manufactured in Japan from cast aluminum to exacting tolerances, each HKB boss kit features a dual 6-bolt pattern—70 mm for Momo/Sparco/OMP wheels and 74 mm for Nardi/Personal designs—so drivers can mount virtually any 6-hole steering wheel with confidence.

Every kit includes all necessary hardware—horn adapters, airbag resistors (where applicable), and high-strength Allen bolts—and installs using OEM-specified torque (20–23 ft·lb) for rock-solid engagement under spirited driving. With multi-PCD compatibility, corrosion-resistant finishes, and “made in Japan” quality, HKB boss kits give enthusiasts a direct-bolt upgrade that enhances cockpit feel and driving enjoyment without custom modifications.