Grass Kinvaro T-57 lift stay — GKT57

Legacy product reference

This page preserves identification and support information for an earlier ROK catalog item. It is not a sales listing.

Product identification

The archived ROK item is the Kinvaro T-57 spring-operated lift-up lid stay, described with a 75-to-90-degree opening range and sold individually. The old listing marks it discontinued.

Compatibility and replacement notes

Spring force, flap dimensions and mounting geometry must match the original application. No replacement lift system has been confirmed for this SKU. Do not select a substitute only by opening angle.

Help identifying your part

When you contact ROK Hardware, include ROK SKU GKT57 and the following:

The mechanism markings, flap width and height, flap weight if known, and photographs of both mounting points.

Reference: ROK archived product information, reviewed October 26, 2026. Historical specifications describe the original item and do not establish compatibility with an unverified replacement.