2021 Kawasaki ZX-10R Stage 1 w/ Diagnostic Tool

(1 customer review)



I understand that BT Moto will get fueling as close to my spec as they can and err on the safe side. Changes may need to be made on the customer side to optimize fueling. This will need to be done via a piggy back fuel module. (Required)

I Have Verified My ECU Part Number is Supported (in description) (Required)

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Product Description




The 2021 ZX-10R / RR is one of the most requested products we’ve had this year. Customers are very excited to see this bike unlocked and we were the first to finish this project for the community. Being the first to unlock the 2021 is never enough for us. We want to make sure that people are not only satisfied with our flashes, we want them to be amazed with the results. After taking some time to develop our mapping, we think we have something everyone will be happy with.


  • Fueling Adjusted (per gear)
  • Ignition Adjusted (per gear)
  • Throttle Derestricted (per gear)
  • Lower Fan-On Temp
  • Increased RPM Limiter
  • Removed Top Speed Limiter
  • Exhaust Valve Management


  • FUELING –  With custom tuning we can target better AFR (air/fuel ratio) plots to enhance not only racing performance, but also cruising and partial throttle inputs.
  • IGNITION – Optimized to make the most power while still being safe and reliable.
  • THROTTLE DERESTRICTION – Giving you the ability to utilize 100% of the throttle is paramount in track situations where you need all the power you can get on demand. The factory file has a “dead spot” on the top end that kills the bikes power curve when it should be making the most. This also means any kind of straight line acceleration also suffers. We remove these factory restrictions to ensure a smooth and predictable throttle, all the way to redline.
  • LOWER FAN-ON TEMP – Let’s face it, this bike rides a little on the hot side. To help not only the riders enjoyment but also keep the engine slightly cooler, we’ve lowered the fan-on temps.
  • INCREASED RPM LIMITER (at customer request) – The stock RPM limiter is set to 13,800 RPM. We have been testing 14,400 RPM with zero negative side effects. We set the RPM limiter for 14,400 RPM in all gears. This helps you stay in the powerband longer and reduces the need to shift at the track.
  • INCREASED TOP SPEED LIMITER – Removed so you can let the bike run free in any track environment.
  • EXHAUST VALVE MANAGEMENT – Improved and optimized for peak performance and sound.


  • YOUR BIKE MUST HAVE ONE OF THESE ECU NUMBERS: (21175-1647, 21175-1662, 21175-1684, 21175-1643, 21175-1724, 21175-1650, 21175-1652, 21175-1655, 21175-1653, 21175-1646, 21175-1654 and Race ECU).
  • If your bike has a different ECU number EMAIL US BEFORE PURCHASE. Your ECU number can be found on the ECU itself in the tail of the bike. We found the ECU number we listed is almost all 2021 ZX-10R’s. We will be working to add more and will update this page when we do.
  • Due to the sensitive nature of the ZX-10R’s AFR (air/fuel ratio) and the platforms almost endless aftermarket options, the file we deliver you may need the fueling to be adjusted to meet your bikes individual needs. In this instance of extreme racing or wanting every last horsepower, we recommend a piggyback fuel controller and wideband or an “auto-tuner” that can aid you in correcting your fuel maps under real life condition (if needed).  We do not offer custom fuel maps with this product because of the basic fuel model and pending CARB approval.
  • Our tuning only applies to ONE MODE “F” OR Full power. This mode will be the highest power mode. Please note that all other modes will run like stock and will not be derestricted. We have done this at the request of the community in general.


Our flashing removes factory restrictions allowing the ZX10 to show its full capability. You can see an insane amount of power added to the top end of ZX10 as well as significant midrange gains. This is like a completely different motorcycle now!

This ZX10 came in with slip on exhaust and a filter. All testing done with same mods and all testing performed on 93 pump gas, same day. You can see how lean the factory mapping is, and how restricted the top end rpm throttle bodies are.

Factory Tuning – 168whp / 77wtq
BT Moto Flashed – 193whp / 81wtq



Thoroughly tested by our own engineers, not just for its function but also durability.  We purposefully dropped this thing about 100 times just to make sure if you accidentally dropped it, it would still be a usable device.

So why buy it when you can just send in your ECU for flashing and spend less? Let’s see the breakdown.

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, you flash your bike.  You never miss a day of riding and no effort removing the ECU.

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 fuels.  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 an exhaust 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.

GO BACK TO STOCK ANYTIME – Not only can you store multiple race maps, you can also flash the original, stock file back into the bike at any time and for any reason.


Additional information

Weight2 lbs
Dimensions10 × 11 × 11 in

1 review for 2021 Kawasaki ZX-10R Stage 1 w/ Diagnostic Tool

  1. Peter Agoglia

    Great tune, big thanks to BT-Moto in unlocking ZX-10RR ECU

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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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