2021+ BMW S1000R Diagnostic Tool w/ Stage 1 (MAIL-IN ECU)



Unlock Your S1000R’s True Potential

Out of stock

Product Description



What Is Stage 1?

Introducing our inaugural flash for the 2021+ BMW S1000R! Utilizing our decade of experience and research into the BMW ECU’s has helped us A LOT to develop the 2021 Single R Stage 1 Flash. US and European model S1000RR’s have been restricted from the factory, with the US models having some of the worst restrictions we have ever seen on a BMW liter bike short of the 2017+ BMW K1600.

What’s Being Restricted?

  • Throttle Restriction – Throttle is restricted and has a lazy feel on tip-in riding along with loss of power in certain gears / RPM’s
  • Exhaust Valve – Restricted for noise and makes a loss in power
  • RPM Limiter – The stock RPM limiter is set to 12,000 RPM and cuts the powerband off too soon
  • Fueling – The 2021 BMW S1000R fueling is set rich from the factory and needs adjustment
  • Heat Management – The S1000R feels hot and runs hot

What Do We Do To Fix These Issues?

  • Throttle Restriction – We remove the throttle restrictions across the board to give you the riding experience and power you wanted from the factory
  • Exhaust Valve – We still utilize the stock exhaust valve to give you maximum power but also open it up when you need to make peak power gains and the sound you want
  • RPM Limiter – We moved the limiter from the stock 12,000RPM to 12,500RPM to maximize your powerband
  • Fueling – We program the S1000R to target a better AFR (Air/Fuel Ratio) to make a little more power along with fixing drivability and idle issues


  • 8% horsepower gain across the RPM range (see graph below)Horsepower gained from exhaust valve management
  • Cooler riding temps
  • Potential cold start, hot start issues solved. Idle is smooth and consistent
  • Improved throttle response in all gears
  • Longer powerband from increased RPM limiter
  • Better exhaust note (as bike is silent stock due to exhaust valve)

Dyno Graphs, Flashed vs Stock

Stock – (RED) 150whp / 78wtq
Flashed – (BLUE) 159whp / 82wtq
Flashed with MR12 race fuel – (GREEN) 165whp / 85wtq

**WHP and WTQ means the power the motorcycle is putting to the ground.  Manufacturers use HP and TQ and this refers to the power being outputted by the engine only and is not a true reading of power.  After the engine of the motorcycle outputs its power it has to travel through the transmission chain, etc before it gets to the ground.  Because of this drivetrain loss, the wheel horsepower number is always less than the manufacturer claimed horsepower.

**All in-house testing performed with 93 octane pump gas. Usage of a lower octane will yield smaller power gains.**

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Additional information

Weight15 lbs
Dimensions15 × 15 × 15 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
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