Spears Racing/kawasaki EX250 Jet kit :Spears Racing has been using the Dynojet kits for carbureted motorcycles for decades, you might read or hear of the word(s) Stage 1,Stage 2 or Stage 3 this is typically the terms that a lot of shops and riders/racers will use, this kit is for Racing and it will allow your Ninja 250 2008/2012 to obtain the maximum RWHP and torque (depending on your exhaust and air intake)
Spears Racing /Dynojet Carburetor Jet Kits can provide you with a simple and affordable solution to all your carburetion problems. This Kits increase power and smoothness throughout the entire rev range, while optimizing your air fuel ,remember that if your bike has the best Air/Fuel it will make the best RWHP for the current configuration.
Each kawasaki EX250 Jet kit includes comprehensive instructions which show step-by-step installation, and testing procedures to ensure a perfect setup every time. This kit has been tested and is used by several street and racers within the USA. This is backed by free telephone support to Spears customers.