Universal Coil Over Wrench Shock Spanner Adjustable C Shape Wrenches All Size

Measure the outer diameter of your coilover's adjustable collar — not the shock body itself. Use a caliper or wrap a tape measure around the collar and divide by π (3.14) to get the diameter. Then select the variant whose range includes that measurement. When your collar diameter falls near the boundary between two ranges, the smaller range typically provides a tighter, more controlled fit.

Yes. The C-shape design is not position-specific — it works on front strut coilovers and rear shock coilovers alike, provided the collar diameter falls within the selected size range. Clearance around the shock body may vary by vehicle; confirm there is enough room to swing the wrench handle before ordering.

Carbon steel provides the stiffness and tensile strength required for the torque levels involved in coilover preload adjustment on standard passenger vehicles and motorcycles. It is not stainless steel, so prolonged exposure to moisture without any protective coating may cause surface oxidation over time. Wipe the tool dry after use and store it in a dry environment to maintain its condition.

Yes, provided the collar has spanner holes or notches that match the pin engagement points on the jaw, and the outer diameter falls within the selected size range. The C-shape profile is well suited to any cylindrical threaded collar where a conventional wrench cannot wrap around the body. Confirm hole spacing and diameter compatibility before use.

The surface finish varies by size variant — refer to the variant options for specifics. Carbon steel tools benefit from a light coat of machine oil or tool wax when stored long-term, particularly in humid workshop environments. This simple step significantly extends the tool's service life.

Each order includes one (1) wrench in the size range you select. If you need multiple sizes — for example, to cover both front and rear coilovers on a vehicle with different collar diameters — add each size as a separate item to your cart.

A pin spanner wrench uses two fixed pins set at a specific hole spacing, making it size-specific. A C-shape spanner wrench uses an open jaw that engages the collar from the outside, allowing it to work across a range of collar diameters without requiring exact hole alignment. The C-shape design is generally faster to position and more forgiving when collar hole spacing varies between manufacturers.