From the development team that builds 400 horsepower Pro Stock engines, the Vance & Hines Raceshop introduces the 30+ HP Kit for Harley-Davidson models. Injecting white-knuckle performance across the entire powerband, the 30+ HP Kit is the result of assembling the best selection of bolt-on components. And the Fuelpak FP3, the brains of the 30+ HP Kit, is what enables these components to get the most out of your motor. Oversized 450 slip-ons with carbon fiber end caps Bigger is better. The Vance & Hines OverSized 450 slip-on with Carbon Fiber End Caps with massive 4.5-inch diameter mufflers. Finished with equally large new Carbon Fiber End Caps, the OverSized 450 fits and looks the part on baggers with extended skirts. The OverSized 450 slip-on line also puts out a big deep-toned rumble thanks to its large fiberglass wrapped 2.5-inch perforated core baffles. Carbon Fiber VO2 air intake kit The all new Carbon Fiber VO2 Air Filter Kit; engineered and manufactured entirely in-house with precision formed Carbon Fiber cover for a distinctive design that is a perfect match for the all new Oversized 450 Carbon exhaust system. Includes a high-flow washable and reusable air filter Fuelpak FP3 with raceshop mapping The Fuelpak FP3 with raceshop mapping. Connecting wirelessly by Bluetooth to iPhone or Android Smartphones, Fuelpak FP3 uses Flash technology to recalibrate engine parameters and mapping for exhaust systems and other performance upgrades downloaded from the expansive library of calibrations developed by Vance & Hines Dual head pipes Power Duals is your ticket to style, quality and performance. More than just individual head pipes, Power Duals integrates an exclusive Vance & Hines Power Chamber hidden behind a contoured heat shield that generates more horsepower and torque than stock 575 Camshaft se "Bolt-In" Camshafts, Silent Ramp Profile to Eliminate Valvetrain Noise, Includes High Performance Inner Cam Bearings & Gasket Set Adjustable pushrods Hardened and Tempered 4130 Chromoly, Designed for High-Stress and Extreme Spring Pressures,7/16" x 0.095" Single Taper 5/16" x 24 TPI, Witness Markings for Quick Install and Precise Adjustment Vance & Hines inscribed timing cover