BT Moto (BrenTune) Stage 2 with Velocity Stacks for the Aprilia RSV4 1100 / Factory (2026+)

BT MOTO VELOCITY STACKS AND MAP UPGRADE

2026-2027 APRILIA RSV4 (ALL MODELS)

Through careful testing of the stock ECU on our recently acquired 2026 Aprilia RSV4 Factory 1100, we have decoded an otherwise NEW stout 222HP powerplant and ecu for even more rider enjoyment. Stage 2 takes our already potent Stage 1 Tune and turns it up to 11 with a airflow modification and calibration to suit (velocity stack + map)

With full in-person datalogging in our closed dyno cell, we were able to find what the engine really liked and disliked and what it wanted for airflow modifications. Through careful logging of ignition timing, per cylinder fueling and thermal management limiters, we were able to write an excellent calibration for these airflow mods.

ALL THE BENEFITS OF STAGE1 PLUS STAGE 2

• Designed for airflow modifications, filter, velocity stack and a slip on at minimum.  Best with a complete Akrapovic or SC system for full maximization - increased power across the curve.
  
• +7hp over the curve on 91 or VP fuel
• 215whp on pump and 222+whp on VP fuel
• 200+MPH capable on GPS - 3.6 60-130MPH, 3.4 100-150MPH recorded on full weight (SEE VIDEO)

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2026+ Aprilia RSV4 Velocity Stack Kit

With the success and amazing feedback we've gotten from our 21-24 Aprilia velocity stacks, we wanted to take advantage of the new 52MM throttle bodies that are begging for more air. Our custom revised velocity stacks and revised tuning not only give a very decent top-end power increase, but also doesn't lose any power in the low or midrange of the RPM. Our easy to install, custom velocity stacks don't shift the powerband over and decrease power down low. We managed to make more power where it matters without sacrificing that torquey punch we've grown to love on the RSV4.

Experimenting with many designs, we found a design that works perfectly for this bike. We spent months testing and developing these stack designs. We have found this design makes the best power for the RSV4 (dyno results below). With our custom stack tuning, there's no need to worry about your bike having rideability issues either.

BENEFITS

• Custom velocity stack designed for YOUR 2026+ airbox. No one size fits all approach. These are designed for the 2026 new airbox and throttle bodies, a completely different design from our 2021+ style.
• OEM fitment and ability to go back to stock whenever you'd like. Plug and play
• Gain 3+HP by itself, more with map (depending on bike and mods) at higher RPM's (with BT Moto Flash).
  
• 215mph and 220whp capable on VP fuel with Stage 2.

BT MOTO APRILIA VELOCITY STACKS

Custom composite with our logo and torqueing specs etched into them, the BT Moto Velocity Stacks have been carefully engineered and designed to maximize power in the higher RPM range while not losing power in the low RPM range.

Made for an OEM fit, the BT Moto velocity stacks bolt to the airbox to ensure tight fitment while also being easy to install. These are plug-and-play and require no additional modifications to your airbox to fit. Simply remove your factory velocity stacks and install. Coupled with our custom flash, the combination makes an extremely easy install and tune that can be done in your own garage, with basic tools and minimal mechanical knowledge.

​2026 APRILIA RSV4 STAGE 2 DYNO TESTING

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STOCK TUNING, 91 PUMP GAS VS STAGE 2 WITH VP RACE FUEL

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STAGE 1 VS STAGE 2, BOTH ON 91 Pump gas

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STAGE 1 vs STAGE 2, BOTH ON VP RACE FUEL

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**All runs performed same day, back to back on an independent DynoJet**

**Testing performed with California ACN 91 octane pump gas unless otherwise specified. Usage of a lower octane will yield smaller power gains. Higher octane larger gains**

• NO DOWNTIME - No need to send in your ECU or remove it from your bike at all. You order the handheld, it get's delivered to you nearly instantly, and you flash your bike on your time easily. You never miss a day of riding and no effort removing the ECU. Any issues, you can revert back to the full stock state.
• READ AND CLEAR CHECK ENGINE LIGHTS - Full code reading diagnostics included in the device.
• STORE MULTIPLE MAPS - When you send in your ECU, you only get one map. You might be thinking, "why would I need more than one map?". Storing multiple maps means you're able to flash for different configurations. If you're a serious track competitor, we can work with you to get you different mapping for different tracks. If, for example, you're add modifications to your stock bike, we can email you a file that takes the new exhaust into account with the changes you need to optimize your bike's new modifications with no mailing needed.
• GO BACK TO STOCK ANYTIME - Not only can you store multiple files, you can also flash the original, stock file back into the bike at any time and for any reason for service, sales, and more.
• ABILITY TO TUNE FUTURE BIKES - Customers swap bikes all the time! With our handheld tuner, you are able to put the first bike back to stock, then reset the device and use the same device on your next bike, with a simple and low cost transfer fee.
• ANY ISSUES? We can resolve nearly anything remotely really quick with our engineering staff.