Spears Racing have developed a new, innovative Motorcycle Velocity Stacks Kawasaki Ninja EX400,Ninja EX300,Suzuki SV650,Yamaha R3 and FZ07/MT07 . This patent pending revolutionary design is backed by real dyno testing and our Corbin Custom Design engineering staff. Our stacks will improve torque/HP and smooth out power delivery. This allows the rider a truer feel for the throttle which enables more accurate throttle input, improves confidence to get on the throttle sooner and boosts rider confidence.
Dyno proven gains don’t lie! Developed in house on simulation software, the race track and hours on the dyno.
Spears Racing will remain transparent on all of the knowledge that will make your Motorcycle Velocity Stacks experience to be the best, unlike the vagueness of most of the other companies in the Little bike world.
“Never Copy…Always Create your own”
**This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway, competition use only. Not road legal!**