Aprilia engine tuning kits (new for 2006) by JK Tuning & Race Development We have engine tuning specs for most classes from superteen to open 125 production. The flat top piston and head kits have proved very impressive, both on the dyno and on track too, giving huge improvements to tourque output. The vforce reeds are a great investment, giving much improved throttle response and increased power delivery. We tested the latest vforce 3 but despite giving better results, the vforce 3 reed petals failed to meet the standards required for top level racing, so we opted to use the vforce 2. The hpi ignition is a really useful tool in that it can be programmed with 2 curves to tailor the power delivery.but above all we can get the very best out of the mods we make by setting the ignition curve for maximum output. Email for a free quote or advice. Back to Products & Services Back to Home