The successful Golf GTI (or, in the USA, simply "GTI") was continued with the Mk2 as a sporty 3- or 5-door hatchback. Like late Mk1 GTIs, it featured a fuel-injected 1.8 litre four developing 112 PS (82 kW; 110 hp). In 1986 (1987 for North America) a Golf GTI 16V was introduced; here the 1.8 litre engine put out 139 PS (102 kW; 137 hp) (or 129 PS (95 kW; 127 hp) for the catalyst version) and the model was marked by discreet red and black "16v" badges front and rear. US/Canadian GTIs were later equipped with 2.0 16 valve-engines, available in the Passat and Corrado outside North America. In 1990, like the Golf, the GTI was given a facelift, and the "Big Bumper" became standard on all GTIs. This was maintained through the rest of the Mk2 model era. In 1990 the GTi G60 was also introduced featuring the 8v 1.8 with a G60 supercharger this version is not to be confused with the very rare G60 Limited (see below).
Source: Wikipedia (original)