A butterfly restrictor is a protective device manufactured by the Douglas Sports company for use in American football. The purpose is to prevent stingers and neck injuries. The most notable wearer of a butterfly restrictor is
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Stinger (medicine) — In medicine, a stinger, also called a burner or nerve pinch injury , is a minor neurological injury suffered by athletes, mostly in high contact sports such as rugby, American football, wrestling, and roller derby. The injury is always a spine… … Wikipedia
Fuel injection — Fuel rail connected to the injectors that are mounted just above the intake manifold on a four cylinder engine. Fuel injection … Wikipedia
Chrysler Neon engine — The Chrysler Neon engine is a small straight 4 piston engine designed originally for the Dodge and Plymouth Neon compact car. It was loosely based on the Chrysler K engine and the Rover K engine, sharing the same 87.5 mm bore. The SOHC cylinder… … Wikipedia
Chrysler 1.8, 2.0 & 2.4 engine — The Chrysler 1.8, 2.0, and 2.4 are inline 4 engines designed originally for the Dodge and Plymouth Neon compact car. These engines were loosely based on their predecessors, the Chrysler 2.2 2.5 engine, sharing the same 87.5 mm bore. The DOHC head … Wikipedia
