Description: This Listing Includes ONE BRAND NEW Kick start gear + idle gear + spring for 49cc 50cc 139qmb motors. The 139qmb motor is the most popular 49cc 50cc 4 stroke motor on scooters and mopeds. We do not know specific models that this part fits on, so please go by the picture to make sure this is what you are looking for. Thank you! Please see pictures below for measurements. Package Includes: 1x Kick start gear 1x Kick start gear Spring 1x Idle gear Shipping and Handling: Fast N Free USPS First Class Mail Shipping Product will be shipped out within 24 hours after payment cleared. Return / Refund Return is accepted within 30 days after the buyer receipt the item If this item is damaged or defected upon receipt, customer has up to 30 days from date of receipt for exchange of a new one. Include your name, address, item, daytime telephone, and if you are requesting a refund or exchange. After getting the returned item, we will refund the customer at the item's price (excluding the shipping costs to and from).