Exclusive 3D mesh and Cool Flow Technology keeps seat up to 30% cooler Suspension for added comfort Protects new seats and covers old seats Our 12-3/4″ (325 mm) adjustable shocks with 10 mm eyes for 150cc and 250cc Hammerhead go-karts is your solution to a worn out suspension system on your Hammerhead. Now you can upgrade your kart’s old shocks with our set of two replacement 12-3/4″ adjustable shocks. Mounting a new set of shocks is more than just routine maintenance, it means a more comfortable ride. Bad shocks can damage tires or cause an abnormally jarring and rough ride. You can prevent these problems by replacing your damaged or worn out old shocks with this high-quality replacement adjustable go-kart shock. These 12-3/4″ (eye to eye) beauties are sold as a pair and are the the ‘kart doctor’s perscription for a smoother, less tooth-chattering, non-bone-rattling day at the track. Note: This size shock absorber is used as the front shock on all Hammerhead 150cc and 250cc models, including the R-150 UTV. In addition, Hammerhead uses this size as the rear shock on their Mudhead go-kart.