Description: This Listing Includes ONE BRAND NEW Variator assembly kit for gy6 4 stroke 139qmb engines. This variator kit comes with high performance 5.5 gram roller weights. We recommend 5.5 gram roller weights for the 139qmb engines because it will help your scooter or moped speed up faster. You can find this variator kit on 49cc, 50cc, 60cc, 72cc, 82cc, 139qmb engines. These engines can be found on many power sports such as scooters, mopeds, ATV's, go karts, buggies, dirt bikes, and more! This Variator Kit Includes: 1 X Back variator plate 1 X Front variator plate 3 X Variator sliders 1 X Drive face spacer 1 X Drive face gear 1 X Cooling fan 1 X Kick starter rachet gear 1 X Set of high performance 5.5 gram roller weights (6 roller weights are in a set) Please see picture below of the bushing. Package Includes: 1x Variator Assembly Kit Payment : Shipping and Handling: Free USPS Priority Mail Shipping 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).