Park Tool Crown Race Setting System Extension

The Park Tool Crown Race Setting System Extension is designed to expand the capability of your existing CRS 15 crown race setting system. By adding extra length to the driver, this extension allows you to work with steering columns up to approximately 425 mm, making it ideal for modern suspension forks and frames with long head tubes. For professional and advanced home mechanics, it is a simple way to get more versatility from a trusted Park Tool headset service setup.

Extend your CRS 15 for longer steerer tubes

Used together with the CRS 15, the extension maintains the same precise, square contact on the steerer and crown race so installations remain accurate and repeatable. It is built from durable workshop grade material to withstand repeated hammer strikes and daily use in busy service areas. If you regularly see long travel forks or tall frame sizes, this add on makes it easier to handle those setups with confidence.

Key features

• Extends the working length of the CRS 15 crown race setting system
• Allows crown race setting on steerer tubes up to about 425 mm long
• Maintains precise, square crown race installation when used with CRS 15
• Durable construction suitable for professional workshop environments
• Ideal for modern suspension forks and frames with long head tubes

For mechanics who already rely on Park Tool headset tools, the Park Tool Crown Race Setting System Extension is a compact upgrade that increases compatibility and keeps crown race installations clean, controlled and repeatable.