There are 5 types of super4 out there in the market. The Project
Big 1 (PB1), Version R, Version S, Vtec and Vtec Spec 2. Version R
and S is the same only the headlight is different. Powercut at
13000+ rpm. Anything below 7k rpm, the bike feels heavy. But above
7k, is where the kick comes in. PB1 is the only one that comes with
a main stand officially. Coz Spec2 the frame allows owners to buy a
main stand to fix. Last heard $280 from HKL. PB1 is without
powercut. All the other versions comes with a 4-2-1 exhaust system
only PB1 is a 4-into-1 exhaust system. Vtec is lighter than the
previous models plus pickup is alot more faster than the previous
models, but if play dragging of gears, the other models will be
able to catch up. The engine oil amount for PB1, Version R and
Version S is max 3 litres with change of oil filter. Vtec and Spec
2 is 3.5 litres. A super 4 no matter how you mod, max output is
only 210km/h. Provided powercut removed and with proper jettings
and maybe a dyno jet kit. Vtec power cut steps in at 13500rpm.
Removal of powercut is good to get top speed, but not good for the
engine. Powercut at the RPM is to protect the engine. Spec2 and
Vtec biggest diff is that the VTEC kicks in at 6350 for Spec2 and
6750 for Vtec. These versions consumes more petrol due to the VTEC
technology. But if you dun run fast enough to open the Valves,
consumption is low.
Maintenace is good coz its a realiable bike. There is a large
market for Super4 so the parts are realitively cheap. Look wise,
there are also alot of add ons for the bike. But if you really out
to squeeze the top for your bike, get a CBR or other bikes. Coz
their top ends will be higher. Like about 240km/h.