Steering and Components› Steering Wheels and Components

HKB Sport

Boss Kit Hub Adapter

$10.32

SKU: ON-07

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Non-Returnable Item
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Overview

The HKB Sport ON-07 is a boss kit hub adapter designed for steering wheel installation. Manufactured in Japan from cast or billet aluminum, it features a double drilled PCD with 12 holes for broad compatibility with various aftermarket steering wheels. This adapter is intended for sports and competition applications.
Show original supplier description
The HKB Sport ON-07 Boss Kit Hub Adapter is engineered for the precise installation of aftermarket steering wheels. Crafted in Japan from durable cast or billet aluminum, it meets strict quality assurance standards set by ASEA and NAPAC. The adapter boasts a double-drilled bolt pattern (12 holes) for compatibility with a wide range of steering wheels, including Nardi/Personal and Momo/Sparco/OMP. Ensure proper installation by removing all grease from the steering shaft and mounting the boss kit flush before applying torque, with a maximum torque specification of 3-3.5 kg/m. Incorrect installation, especially on tapered tooth designs, can lead to stress cracks under torque load. It is not compatible with vehicles equipped with airbags (exceptions apply, see full compatibility list), cruise control, steering wheel switches, Super Hicas, or super sonic suspension, depending on the specific model and year. For example, it is not compatible with vehicles equipped with airbags on Avenir models from 5/90~8/95 or Safari models from 11/87~. Certain models, such as the A31 Cefiro, may require the ON-97 boss kit, and compatibility should always be confirmed with the manufacturer. The seller advises that compatibility is based on JDM cars only and does not guarantee fitment, recommending buyers conduct their own research before purchase. After-sale support does not include installation assistance.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandHKB Sport
Part NumberON-07
CategorySteering and Components
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Shipping

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