Metaldyne Performance Group Inc. manufactures and sells components for use in powertrain and safety-critical platforms in the United States, Europe, Asia, and internationally. The company operates through three segments: HHI, Metaldyne, and Grede. The HHI segment manufactures engineered metal-based components, including transmission components, driveline components, wheel hubs, axle ring and pinion gears, sprockets, balance shaft gears, timing drive systems, variable valve timing (VVT) components, transfer case components, and wheel bearings. The Metaldyne segment manufactures engineered metal-based powertrain products comprising connecting rods, VVT components, balance shaft systems and crankshaft dampers, differential gears and pinions, differential assemblies, valve bodies, hollow and solid shafts, clutch modules, and assembled end covers. The Grede segment manufactures cast, machined, and assembled components, such as turbocharger housings, differential carriers and cases, scrolls and covers, brake calipers and housings, knuckles, control arms, and axle components. The company also provides safety-critical products comprise components for chassis, suspension, steering, and brake applications. It serves vehicle original equipment manufacturers and tier I suppliers in the light, commercial, and industrial vehicle and equipment markets. Metaldyne Performance Group Inc. was founded in 2010 and is headquartered in Southfield, Michigan.