Black-Ops Alloy Chainring 39T BlackEach Black-Ops Alloy Chainring is CNC-machined from high-strength 6061-T6 aluminum. This lightweight chainring is the ideal drop-in upgrade to replace heavy, stamped-steel sprockets on vintage BMX bikes, beach cruisers, and wheelie bikes. Engineered specifically for standard 1-piece cranks and robust 1/2’’ x 1/8’’ single-speed chains, it delivers silky-smooth power transfer and crisp responsiveness. Available in a 33T or 39T configuration, it gives you the precise gear ratio needed to dial in your acceleration and top-end speed while significantly dropping rotational weight.888571089798
