Adjustable 340mm (from center hole to center hole) Aluminum shock absorber primarily used for (but not exclusively) 50cc to 300cc ATVs, dirt bikes, go-karts and scooters as well as many other common models of powersport and mobility products. This shock has nine (9) coils with an 11mm diameter. Please note that shock color(s) may not be exactly as pictured. Mounting holes approximately 10.3mm in diameter.