18mm - 240mm Coilover Wrench, Hook Wrenches Tools Shock Spanner Wrench C-Shape

Measure the outer diameter (OD) of your coilover's threaded collar or lock ring in millimeters. Select the wrench size whose range includes that measurement. For example, if your collar OD is 62mm, choose the 55–62mm variant. When in doubt, consult your coilover manufacturer's spec sheet for collar dimensions.

Yes, provided the ring diameter falls within the selected wrench's size range. Many coilovers use the same diameter for both rings, but some designs differ between upper and lower. Measure both rings before ordering if you need to adjust both.

Carbon steel provides good rigidity for standard coilover adjustment tasks. For severely corroded collars, apply penetrating oil and allow adequate soak time before applying torque. Avoid using a breaker bar extension beyond what the wrench handle geometry allows, as this can stress the hook engagement point.

Yes. Many motorcycle rear shock preload adjusters use threaded collars in the 18–52mm range. Select the size that matches your shock's adjuster ring OD. The C-shape profile works well in the confined space around most rear shock mounts.

This wrench is compatible with any coilover or shock absorber that uses a standard notched threaded collar within the 18–240mm diameter range. Most aftermarket coilover brands — including KW, BC Racing, Tein, and similar — use standard collar designs. Always verify your specific collar OD against the selected size range before purchasing.

Each listing is for one (1) individual wrench in the size range you select. This allows you to purchase only the size(s) relevant to your vehicle without paying for sizes you won't use. If you work on multiple vehicles with different collar diameters, simply add the additional sizes to your cart separately.

After use, wipe the wrench clean of grease, brake fluid, and road grime. Store in a dry toolbox or hang on a pegboard away from moisture. A light coat of machine oil on the contact surfaces will extend the finish life, especially if the tool is stored in a garage environment with humidity fluctuations.