Product Description: brand new high quality Made of high quality material, durable Plastic gears for kids electric rc car 550 and 390 gearbox ride toy car Children's electric car large, medium and small gear motorcycle 390/550 motor motor gearbox gear stroller accessories Type: Children's electric car gear Dimensions: as picture shown Model: (optional) 550 5P set 550 5P large gear 550 5P middle gear 550 5P small gear 390 gear A set 390 A large gear 390 A middle gear 390 A small gear 390 gear B set 390 B large gear 390 B middle gear 390 B small gear 550 gear A set 550 A large gear 550 A middle gear 550 A small gear 550 gear B set 550 B large gear, 550 B middle gear 550 B small gear Package includes: (optional) Listing 1: 1 * set of gears Listing 2: 1 * gear 【High-Quality Plastic Gears】Made of durable and high-quality material, these plastic gears are designed for use in children's electric cars with 550 and 390 gearboxes. 【Compatible with Various Models】These gears are suitable for children's electric cars with large, medium, and small gear motorcycles equipped with 390/550 motors. They serve as essential accessories for the gearbox. 【Multiple Options】Choose from different gear sets and sizes according to your specific model and requirements. Options include 550 5P set, 550 5P large gear, 550 5P middle gear, 550 5P small gear, 390 gear A set, 390 A large gear, 390 A middle gear, and more. 【Multiple Options】Choose from different gear sets and sizes according to your specific model and requirements. Options include 550 5P set, 550 5P large gear, 550 5P middle gear, 550 5P small gear, 390 gear A set, 390 A large gear, 390 A middle gear, and more. 【Easy to Install】With the provided dimensions, these gears can be easily installed in the corresponding gearboxes.