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BT Moto Velocity Stack / Funnel for 2015-2019 BMW S1000RR

$299.95

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Add a Brentuning T-Shirt

SKU: BTM-STAK-K46-1519.
Category: .

Product Description

PLEASE NOTE

**Custom fueling adjustments with a fuel controller (like power commander, etc) are REQUIRED to receive advertised gains with this product**


Finally after a year of in-house research and development, a proper velocity stack for the 2010-2019 BMW S1000RR.  While an extremely popular modification with Japanese bikes, BMW bikes always missed the mark with their adjustable factory geometry, and intricate airbox from the factory.

As some may notice BMW has changed the airbox several times over the past decade and offered a racing airbox for their HP4 Race series and WBSK bikes.  Some of these changes were introduced for more midrange, top-end, race use and so on. After studying the differences of all these units, before and after data, and dyno data logging, we were able to create a scalable solution for race use with the factory airbox.

We studied the current market and tested other 3rd party velocity stacks and found flaws that needed addressing. What we found was the current market offerings are pretty disappointing. They appear to be made without any sort of testing or consideration for long-term durability.  These 3rd party stacks utilize the OEM rubber grommets and tend to collapse under extreme RPM’s and high airflow. Due to this we avoided this rubber gasket design.  The 3rd party stacks were also designed too wide and rubbed/hit the adjustable stacks connecting arm for the servo motor and locked the adjustable stack at a “neither open nor closed” function. As a result some 3rd party stacks actually lost horsepower over the stock configuration.  The other 3rd party stacks appeared to lose power and did not alter the air/fuel ratio at all. This is a telltale sign that it did not change airflow. Our in-house dyno confirmed our suspicions as these stacks did not make more power than the stock configuration.

Our lower funnel kit gives the BMW S1000RR that little extra midrange and top end that could be the difference between first and second place when stacked up to an equally modded S1000RR.  This is a must have for full bolt-on bikes, or race engines. The shorter tuned stack gives the bike a unique and more aggressive induction sound and helps keep breathing easy at higher RPM’s.

For this product to work as intended your motorcycle will require custom tuning. It’s roughly 7% at 12,000 RPM, interpolated to 18% more fuel at the RPM limiter as a baseline. The product will work with a stock motorcycles, flashed or unflashed, a piggyback fuel tuned bike, etc. DO NOT buy this product without AFR (air/fuel ratio) verification or custom tuning (extra fee).  Power gains are determined by proper AFR, so do your due diligence and not a “set and forget” it. Ideally for or those who are flashed and do their own fuel tweaking.

BLUE = Stock Velocity Stacks, full bolt-on, VP100 fuel – 206whp / 94wtq full bolt-on 2017 BMW S1000RR
RED = BT Moto Velocity Stacks, full bolt-on, VP100 fuel – 209whp / 93wtq full bolt-on 2017 BMW S1000RR

You can see from the dyno chart below the peak gains are minimal but that’s not the whole story. See the BT Moto stack power curve, there’s a significant amount of powerband where the stacks make more power, most notably the top end. The velocity stacks also smooth out the known power dip around 11,500 RPM. Peak torque is reduced by 1 but overall makes more torque over most of the RPM range.

BT Moto Stacks

INSTALLATION VIDEO

INSTALL TIME: 1-1.5 hours


***DISCLAIMER: FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE***

Additional information

Weight 10 lbs
Dimensions 10 × 10 × 10 in

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SATISFIED CLIENTS MAKE US HAPPY

  • “ Bike is running awesome and no out of the ordinary popping under load during downshifts at high rpm. My hats off to your team for making me feel like I have a personal tuner at my disposal. Really appreciate the quick turnaround to get me straight. I can definitely feel the extra power! ”

    Andy Young - Maryland Aug 28, 2018
  • “ This product is amazing.  I feel like I have a better version of my bike.  Like it should have come this way.  The throttle smoothness and even power band make it a joy to ride.  I no longer feel as if I'm riding a wild bronco lol. Thank you again, I didn't think that a L-twin could behave this well.  Also, your customer service is the best.  I could always reach you by email or phone.  I will tell everyone I know about this fantastic addition.  Keep up the great work, guys! ”

    Dan Martinez May 01, 2017
  • “ I have a 2015 S1000RR and was extremely skeptical when I heard about BrenTuning and the power they got out of an ECU flash.  After speaking with the team at BrenTuning, all my hesitations were put to rest and I haven't stop winning first place trophies since! BELIEVE THE HYPE! ”

    Troy Gleason - California Jul 10, 2016
  • “ Bren and his team did an awesome job on my bmw s1000rr. Went from 179rwhp an 83 rwtq to 206 rwhp and 93rwtq. Customer service was great and I highly recommend them for any of y'all that want to make that power!! ”

    Paul Jackson - Texas Jul 10, 2016
  • “ Purchased the tune for my 2015 BMW S1000RR. Was skeptical at first and initially had a bunch of questions. Chris was very patient with me and answered them all. Had some problems after receiving my ecu back and Chris was very helpful in getting all my issues worked out. Bike runs fantastic. Definitely worth it. Thank you again guys for dealing with my questions and taking care of everything before and after the purchase. Fantastic customer service. ”

    Cody Hunsucker - Tennessee Jul 10, 2016
  • “ After doing some research it was obvious that Brentuning was the best option for tuning of my S1000RR. I wont go into details but after multiple overnighting of parts to me at no additional charge, I'm really impressed and satisfied with the end result and I haven't even tried out my race fuel tune yet! To top if off I received a random care package of goodies from Chris today. The customer service at Brentuning is probably the best I've received from any business I've dealt with. Their email response times are unreal as well, lol. Literally sometimes instantly, kinda weird. lol. I would recommend any and everyone to Brentuning for your S1000RR tuning solution. If anyone has any questions or are hesitant before purchasing, feel free to shoot me a message and I'll help / assist / give you a more detailed opinion on my experience as well. ”

    Trey Hull - Texas Jul 10, 2016
  • “ I have the Bren Tuning ECU flash on my 2015 BMW S1000RR and it is unbelievable how fast this bike is. This tune is the best thing I got for my bikes. I have also did the Bren Tune for my 2014 BMW S1000r for which it just made this bike really nice. Bren Tuning is the best. ”

    Darnell Edwards - Maryland Jul 10, 2016
Competition use only parts are clearly labeled as competition use only in the product listing page and may only be used according to the guidelines posted on our Emissions Notice to Customers in California page