2014-2020 BMW S1000R / S1000XR, BT Moto Velocity Stacks



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Product Description

Finally, after over a year of in-house research and development, a proper velocity stack for the 2014-2020 BMW S1000R / S1000XR.  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 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 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.

For this product to work as intended your motorcycle will require custom tuning. It’s roughly 7% at high RPM, interpolated to 18% more fuel at the RPM limiter as a baseline. The product will work with a stock motorcycle. DO NOT buy this product without also purchasing our revised flash, 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.


2014-2019 BMW S1000XR
2014-2020 BMW S1000R

RED = Stock Velocity Stacks (93 Pump Gas) – 163whpWHP / 91WTQ
BLUE = BT Moto Velocity Stacks (93 Pump Gas) – 179WHP / 93WTQ

You can see from the dyno chart below the peak gains are HUGE while the midrange loss is extremely minimal (2-3HP). 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. Peak torque is increased by 2 as well.

S1000R / XR Velocity Stack Dyno

BT Moto Stacks


INSTALL TIME: 1-1.5 hours


“Cuban Rider” on YouTube is a longtime customer of ours and wanted to test quantifiable and independent results from his own testing on his BMW S1000XR.


Additional information

Weight10 lbs
Dimensions10 × 10 × 10 in


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  • “ 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 BT Moto 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 BT Moto 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 BT Moto 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 BT Moto 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