Rebuild Kit for 1693.1Q Pro Shop Clamp

The Pro Shop Clamp 1693.1Q lives the same daily life as a shop's most-used tool: thousands of bike-to-bike cycles, hundreds of lever-actuated open-and-closes, and the slow accumulation of grit and dried-frame-cleaner residue in the ratchet mechanism. The Rebuild Kit for the 1693.1Q is the service item that resets the clamp's ratchet to like-new without replacing the entire clamp head.

If the QR ratchet has started to slip, ghost-grip, or feel notchy as it engages, the spares kit is usually the right answer before the next step (replacing the clamp head outright). The kit ships with the wear-prone internals of the ratchet mechanism: the parts that take the cyclic load every time a mechanic works the QR.

When to use it

Two signs the clamp is asking for the rebuild kit rather than a full replacement:

1. The QR release feels notchy or grabbing rather than smooth. The ratchet pawl spring or pawl face is worn; the rebuild kit's spring and pawl restore the smooth release.
2. The clamp doesn't hold pressure between bikes. The pressure-set mechanism has drifted; the rebuild kit's internals reset the mechanism to its factory tolerance.

If the clamp jaws themselves are cracked, the body is bent, or the QR button stem is stripped, the issue is past the rebuild kit's scope; replace the clamp head with a new 1693.1Q.

Compatibility

Fits the Unior Pro Shop Clamp 1693.1Q on Single Arm Pro Stands, Double Arm Pro Stands, and BikeGator+ Pro Shop QR portable stands. The rebuild kit is specific to the 1693.1Q quick-release mechanism; cam-style clamps (1693.1S, 1693.1) use a different mechanism and aren't covered.

Specs

• Article number: 1693.1Q-SP.1
• Compatibility: Unior Pro Shop Clamp 1693.1Q (all stands)
• Scope: ratchet mechanism internal wear parts
• Service interval: as needed, when the QR mechanism shows wear

Includes: rebuild-kit parts set for the 1693.1Q QR mechanism.

Built in Zreče, Slovenia

Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The 1693.1Q rebuild kit reflects the same long-service-life design assumption that runs through the rest of Unior's catalog: parts wear, the wear-prone parts are user-serviceable, and the rebuild kit costs a fraction of the clamp head replacement. The clamp is designed to outlive a workshop's first decade; the rebuild kit is what makes that outcome the typical one rather than the exception.

Pro tip from our mechanics

A QR clamp that's slipping under a heavy bike is the clamp asking for service, not the clamp asking to be retired. The rebuild kit is a fifteen-minute swap that restores the original feel. Shops running the 1693.1Q in daily service usually go through one rebuild kit every five to seven years of heavy use; lighter use, more like a decade. If you're shopping the QR clamp for a new stand rather than rebuilding an existing one, the buying guide compares the Pro Shop QR against the cam-style alternative directly: How to choose a bike repair stand →