Spears Racing know as the industry leader in Lightweight race motorcycle parts has put their years of experience in building race engines for racers and teams all over the world .

This section of products that Spears Racing feels is an addition to allowing your motorcycle engine to produce more RWHP and Torque.

These products are what Spears Racing feels will be the best bang for your buck, from the Patent Pending Design “Snap Stacks”Ninja 400 Velocity Stacks   Velocity Stacks to there precision machined Bored Throttle Bodies.

This is a ongoing challenge for most of the motorcycle racers, but remember we are dealing with a commuter style motorcycle that was designed on a budget and its intentions were to do a few miles a day.

The system that allows air and fuel into the engine is known as the Intake System. This system is comprised of the air filter, the intake manifold, and either a carburetor or a throttle body along with pressurized fuel injectors depending on the engine configuration.

More air means more oxygen, proper mixture, good combustion, better fuel economy and greater performance

The function of the air intake system is to allow air to reach your motorcycle’s engine. Oxygen in the air is one of the necessary ingredients for the engine combustion process. A good intake system allows for clean and continuous airflow into the engine

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