Replacement reed block with plastk reeds. Rather than the usual metal reeds, this item uses plastic reeds. Metal membrane petals can cause massive damage if they break. Plastic petals get chewed up and spat out the exhaust. Suitable for all geared mopeds with Minarelli AM, Generic, KSR-Moto, Keeway, Motobi, Ride, CPI, 1E40MA, 1E40MB engines.