ACS Crossfire BB Cup Set Red Model-E-Bike Fusion SM STVZO E550 AI alert brake light function

AI alert brake light function

front & rear

while in the middle

Defined Color Black TPI 120 Tire Type Clincher Tire Intended Use BMX Color Black Tire Diameter 20" Tire Bead Folding Labeled Size 20 x 2

Covering cassette ranges from 10-28t up to 10-36t this wireless wonder has larger pulleys to decrease chain articulation and increase efficiency and an Orbit fluid damper to keep everything in place over the rough stuff

ACS Crossfire BB Cup Set Red Model-E-Bike Fusion SM STVZO E550 AI alert brake light functionForged and CNC machined aluminum with precision sealed bearings for 2pc cranks and 24mm spindles BSA 1. 37"x24T for 68 73mm shells Model Crossfire Spindle Interface 24mm Shell BSA Shell ID 33. 6mmx24tpi Width 68 73mm Color Red