race in a separate category called the "specials", which is for cutdown and heavily modified racing scooters. The other scooter race categories include stock races with relatively unmodified larger scooters (152 to 250 cc) and "small frame" races for scooters with 136 cc or smaller engines. For races, scooters usually have to have accessories removed, such as center and side stands, mirrors, turn signals that stick out, and luggage racks. Scooter races often disallow performance-enhancing fuel additives such as octane booster. Related scooter types A cutdown scooter resembles a "naked scooter", which is a scooter designed without panels covering the engine and with little or no bodywork. The difference between the two types is that while a cutdown scooter started as a regular scooter with body panels and bodywork, before it was customized, a "naked scooter" is designed and manufactured as a "bare-bones" vehicle. In the 1960s, Lambretta models A through D were in this category. In the 1990s, Italjet produced a stripped-down scooter called the Dragster. In the 2000s Honda produced the Ruckus, which had the motor mounted in a skeleton-style metal frame. Another scooter type which is related to cutdowns is the "chopper", which is an extreme cutdown scooter with extra-long front forks. These bikes are mostly made using Lambrettas, because when the bodywork is removed from their tubular frame they resemble smaller custom style motorcycles. "Rats" are cutdowns which are made by putting together old parts to create a rough-looking, unpainted bike. In contrast to many other scooter enthusiasts, "rat" builders view blemishes and unrepaired dents as attractive. The "rat" approach to scooter customizing is similar to the rat rod style of hot rodding, in which old cars often have original paint with rust patches, or even just bare rusty metal. Major scooter rallies which give prizes to scooters sometimes put "chopper" and "rat" scooters in a separate category from the rest of the cutdowns. See also Hot rod Skinhead Scooterboy Kustom Kulture References Modified vehicles Skinhead Youth culture in the United Kingdom Custom motorcycles