A wheel stud is a short threaded rod that screws into the hub of your kart. The wheel slides over it and a nut tightens everything down so your wheels stay on securely.Racers keep a few spares in their toolbox because these studs can stretch, strip threads, or simply disappear at the track. This 8mm version is made from steel with a 1.25 thread pitch and measures 37mm overall for reliable wheel mounting on most karts. Thread Size: 8mm x 1.25 Overall Length: 37mm Material: Steel Color: Silver Universal fit for karts using 8mm wheel studs More from Aftermarket Aftermarket Exhaust Gasket for OHV Clone Engines Stainless Steel 23.6mm Exhaust Valve for Clone Engines Aftermarket 12T #35 Driver for SMC/Buller/Premier Clutches Precision 15T #35 Aftermarket Driver for Bully Clutches Product Highlights 01This wheel stud threads directly into the kart hub so the wheel can slide on and be secured with a nut. 02Thread size is 8mm x 1.25 with an overall length of 37mm. 03Made from steel for everyday use on practice and race karts. 04Silver finish helps identify thread condition at a glance. 05Universal fit for any kart hub that accepts 8mm wheel studs. 06Racers keep spares because studs can stretch or strip threads during normal use. 07Simple bolt-in design requires no special tools for replacement.