S&S fuel injectors offer high quality and excellent value high performance fuel injectors for Harley Davidson® V-Twin engines. Each injector is individually tested and flow-matched dynamically to within ±1% of listed specifications. - Optimized spray pattern for each application - Sold in sets of 2 injectors - Each injector is dynamically flow tested - Exact OEM style fitment - For OEM replacement to high performance applications depending on state of engine tune. Note: Fuel injectors must be able to provide the flow required for the maximum horsepower the engine is capable of producing. Too small injector may cause the engine to run lean; which may cause engine damage. A too large fuel injector will not improve horsepower or torque but may provide issues with idling; running rich; tuning and possible engine or catalytic converter damage.