Warp9 Sprocket - Surron/Talaria: Crafted from robust aluminum 7075-T6, this sprocket comes in a sleek black finish. Additional chain links are not included. For optimal performance, refer to the table below for the required chain length based on your specific model: Talaria MX3, MX4, Surron Light Bee, or E-Ride Pro-SS. Sprocket sizes range from 42 to 64 teeth, with corresponding chain sizes from 104 to 116 links.