Searching for a high-performance harley davidson flywheel upgrade? Darkhorse Motor Company manufactures precision flywheels as part of its Man O’War crankshaft assemblies, engineered for balance, smoothness, and durability. Each flywheel goes through static and dynamic balancing to reduce vibration and enhance engine response. Whether for Twin Cam or Milwaukee‑8 platforms, our flywheels are built to OE or performance standards. With expert blueprinting and trusted reliability, Darkhorse delivers components that support consistent horsepower gains and long-term operability in real-world riding conditions