Hole distance:80mm/3.14″;Outer diameter:104mm/4.1″(as the picture shows) Replacement for 43cc 49cc 50cc Mini Pocket Bike ATV Dirt Bike Gas Scooter Color:black,three mounting hole bolts,bolt hole diameter:5mm/0.19″ Please notice that there are different type of the inner cog.Please make sure the item’s shape,size match your machine before buying Warranty:We are always available to help our customers.Please message us for replacement or refund if you are not satisfied with the order Product Description pls confirm The size of the product meets your requirements before you purchase Note:please allow 0.5-1 inch difference due to manual measurement.1inch=2.54cm Size: Color:black Hole distance:80mm/3.14″ Outer diameter:104mm/4.1″ Bolt hole diameter:5mm/0.19″ Replacement for: For 43cc 49cc 50cc Mini Pocket Bike ATV Dirt Bike Gas Scooter Package Included: Starter x 1pc GOOFIT Keychain x 1pc About After-sales service: First of all,we sincerely apologize to you for returning exchange or refund caused by any reason.Please be assured,no matter what the problem.Please contact us first,we will do our best to solve any problem for you.We attach great importance to every customer.Your satisfaction will be our greatest impetus About GOOFIT: GOOFIT was established in 2000.We are a leading website selling,ATVs parts,Go Karts parts,Dirt Bikes parts pocket bike parts,Moped scooter parts online Company Culture: We are committed to providing the best products and services for our customers