PLM Power Driven Polaris Slingshot Header ManifoldPLM Private Label Mfg. Polaris Slingshot Ramhorn Header Manifold is the perfect upgrade to the stock manifold. For year model 2015 2019 Increase horsepower and torque 304 Stainless Steel One Year warranty CNC machined flanges Collector is 2. 5" 1 2 inch flange Thick 8 gauge schedule 40 pipe Ported runner and collector for better flow Dual O2 Senor bung Extra O2 Sensor can be used with wide band or other tuning O2 sensor Professionally TIG welded and