EC21 Product Catalogs - qw dirt bike http://www.ec21.com/ec-market/qw dirt bike.html Dirt Bike QW-DB-08Bhttp://sophia317.en.ec21.com/Dirt_Bike_QW_DB_08B--3298809_3298588.html Features & Specs Engine: 125CC,4-stroke Single cylinder Air cooled. Bore&stroke: 125cc: 56.5 x 49.5 Starter: Kick star20090107