The all new 99.1cc engine develops a class leading 8.5bhp at 9000rpm and 7.35Nm of torque at 6500rpm. The advantages of a multi-valve engine having two small inlet valves instead of one large and heavy valve which at very high rpm is likely to bounce and hit the piston. The major advantages are that you can have very low valve angles so there is less of a chance for the fresh charge to escape out of the exhaust especially in a four-valve head since you have the spark plug located right in the middle of the combustion chamber. The multi-valve cylinder head always makes for better burning then any two-valver can ever deliver. With better combustion of fuel and air you get more power with less wastage of fuel and therefore better mileage. By extension, being a more efficient engine means it is also better for the environment.

The adoption of a Keihin PC18 carburettor is another key to the engine's Performance The gearbox felt like a dream on both motorcycles. The Energy has a four-speed box and the Adreno has an additional cog. The gear ratios are really well matched to the power curve of the engine and to top it all the shift quality on both the bikes I found to be extremely light and slick. I did not encounter a single false neutral during the Performance testing and none of our team ever complained once of a missed gear or such.