PanDair 420 Chain with Front&Rear Sprockets Sprocket Kit for 110cc 125cc Dirt Pit Bike Chinese ATV Taotao

【Sprocket Kit】100% brand new and high quality,Durable. 【Parameter】Material:Metal ;Chain Size: 420;Ront Sprocket Teeth: 13;Rear Sprocket Teeth: 37; Fitment Type:Direct Replacement. 【Front Sprocket】Teeth: 13;Diameter of Centre Hole : around 1.7cm (17mm);Distance Between Mount Hole(centre to centre) : around 3.0cm (30mm). 【Rear Sprocket】Teeth: 37;Diameter of Sprocket / Cog : around 15.4cm (154mm);Diameter of Centre Hole : around 7.6cm (76mm);Distance Between Mount Hole(centre to centre) : around 6.5cm (65mm). 【Fits 】For the reference:ATVs, gokarts and dirt bikes.