Velocity Stacks Yamaha YZF-R3 Superbike/Supersport 2015/Current


The OEM Air box on the Yamaha R3 contains two different length velocity stacks, one long, one short and  a small intake tracks which limits the air intake into the engine,again remember this is a commuter designed motorcycle.


Spears Racing have developed new, innovative Yamaha YZF-R3 Velocity Stacks.  This innovative  revolutionary 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.
The OEM Air box of the stock “commuter bike” Yamaha R3 contains two different length velocity stacks, one long, one short and two small intake tracks which severely limit the air intake into the engine.  This kit replaces both stacks with our own Spears Racing shorter velocity stacks and instructions to modify your current OEM air box.  These shorter velocity stacks not only allow more air into the engine, but they also smooth out the increased flow of air to really maximize the benefit.
The performance difference with the Spears Racing Yamaha YZF-R3 Velocity Stacks compared to the stock is dramatic.

Here’s a dyno comparison with a stock motor(OEM), stock air box vs stock motor with a BMC air filter,M4 exhaust and a power commander five (PCV) vs stock motor with a BMC filter, M4 exhaust and a power commander five (PCV) modified air box (See Install ) with Spears Racing’s velocity stacks. You can see the power band carries strong through the complete power and starts a separation from the stock run at 9800 RPM’s and continues to make more power to the red line instead of falling off at 10,700 and we don’t lose any important midrange power. The increase from 10,500 to the rev limiter is massive both with RWHP and Torque.


“Never Copy…Always Create your own”


These dyno runs were done with 30PSI in rear tire
This ECU is not flashed or any hidden items to show false readings.


Dyno proven gains don’t lie! Developed in house on simulation software, the race track and hours on the dyno.


**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!**


Yamaha YZF-R3 Velocity Stacks Kit Contains:

2ea. Air box manifolds
2ea. Spears Velocity Stacks
1ea. Silicone 1oz. Tube