The Park Tool 837 1 1/8″ Stepped Cup #3 is a precision replacement tool designed for use with the CRS-1 Crown Race Setter, part of Park Tool’s headset service lineup. This stepped cup provides the correct diameter and surface needed to install 1 1/8″ crown races cleanly, squarely, and without damaging the fork steerer or headset components.
Manufactured to Park Tool’s exacting standards from durable, hardened materials, the 837 stepped cup ensures reliable installation every time. Its stepped design matches the contour of standard 1 1/8″ headset race profiles, helping distribute impact forces evenly during installation and reducing the risk of misalignment or damage.
837 - 1-1/8" stepped cup #3 CRS-1
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The Park Tool 837 1 1/8″ Stepped Cup #3 is a precision replacement tool designed for use with the CRS-1 Crown Race Setter, part of Park Tool’s headset service lineup. This stepped cup provides the correct diameter and surface needed to install 1 1/8″ crown races cleanly, squarely, and without damaging the fork steerer or headset components.
Manufactured to Park Tool’s exacting standards from durable, hardened materials, the 837 stepped cup ensures reliable installation every time. Its stepped design matches the contour of standard 1 1/8″ headset race profiles, helping distribute impact forces evenly during installation and reducing the risk of misalignment or damage.