Help with uncapping my bike - Trek Allant +6

edeitsch54321

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I have the Trek Allant +6 and I am looking to uncap the speed. I am aware of the premise behind removing the speed limitations, but unsure on what chip I would specifically need. Any help would be massively appreciated as I don't want to sped £100's just to have bought the wrong thing.

I will list the Motor / Computer specs below:


Bosch Kiox 300, smart system

Bosch Performance Line CX, 20 mph (25 km/h in Europe)
 
I think going at this, you need to search mostly by your motor. You've got the Bosch performance line cx, 5th generation. There are some videos to watch and then there are the people selling different modifiers. I think your best bet is the rim magnet method. This isn't my specialty, but I'll list some of the options here for you to look into.
Screenshot_20250725-164017_Chrome.jpg
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So here’s a cautionary note. If you alter your Bosch mid drive and return to a Bosch dealer for service, the service interface will identify the modification and lock out the motor. Game over. Presumably this is also how it works with Bosch’s Flow app and updating your system. I haven’t run into this yet but we’ve been warned to watch for it.

If you modifications can be”removed” prior to interfacing with the service system you could be fine, but be warned, Bosch is pretty unforgiving about this stuff. If you don’t plan on getting factory updates, fine… go to town. However, if a Bosch powered bike comes into our show we often check for upgrades as a normal part of a service, so you’d want to ask your friendly tech to keep his phone away from your bike while he works on it. ( yes, we use our smartphones to check your drives while they are in the shop. We also adjust your SRAM and Shimano derailleurs with them on bikes with electronic shifting. My own Bosch powered lump even sends me a text when an update is available )

Kind of like buying a new luxury car and finding out a year later that there’s a subscription fee to cover certain options like your heated seats

Or air bags.
 
This is why cheap Chinese ebike makers are never going to go out of business. They may wash their hands of you, once the bike has left their warehouse, but at least you know you own the bike and can do as you please.
Yeah, I’m sorta torn between the two. If you buy from a big make you get proper parts and service back up and a proper dealer builds your bike so you can, in theory, assume it’s going to perform well the day your butt first hits the saddle. An online make drops it at your doorstep for half the price and then you are often on your own. Some even state you should have it built professionally in the warranty to avoid liability.

I can see where, if you are comfortable working on these things and reasonably competent with the tools, purchasing an online bike makes a lot of sense. Building up an e-bike isn’t nearly as complicated as building a high end road bike. The savings can easily cover the cost of parts if you get into some trouble down the road. The Chinese are pretty much building all of our bikes anyway. 86% of what’s sold in America is made in China and a lot of the rest are built in other Asian countries in Chinese owned facilities. ( Cambodia and Vietnam as the labour is cheaper than in China ) My own Bosch mid drive bike is only “assembled” in USA, with virtually all of its components actually made off shore.
 
This is why cheap Chinese ebike makers are never going to go out of business. They may wash their hands of you, once the bike has left their warehouse, but at least you know you own the bike and can do as you please.
And there inexpensive to replace. I got a spare befang HM already laced in my wheel size for less than the cost of lunch all week ($100). My original motor just turned over to 4K and still working as usual.

I wonder how sales are going. Everywhere I look theres either a Chinese scooter or Ebike. How can those companies do it with the asking prices of the big tickets. There are fall sales popping up and one I had my eye on did come down in price. Now its only 12k and some change lol.
 
I have a buddy in the bike club who has a Domane+ road bike.

He found some circuit that just wires in that lies to the speed sensor; says it's going slower than it is, so he's no longer capped at 28 mph. He's an older ex-velodrome racer with a pacemaker, but he wants to ride with the younger guys on the fast rides. IIRC, he had to order it from Australia.

If you found this, you could remove it before bringing the bike in for service.

Bosch is likely careful with this to show due diligence re. compliance with more strict EU/UK regulations.

I would normally just recommend getting a moped or Speed Pedelec, but that comes with a significant extra cost in the UK, so I understand.
 
With a kit like like mine you just have to go in through the '3311' controller and change some settings. +/- will open settings then enter p16. Its easy enough to learn your model. New or better ways will continue to come up as time goes on. If there's will there will be someone finding the ways to hi jack speed governors in to the future. E tech is in its infancy and I like where its been going.

What might be neat is getting inside one with a laptop and personally tailoring it however you like, and change it or create short cuts to access things faster. Unless your stepping on anyone's toes legally or anything.

I'd speed mine up as soon as I double capacity. I can usually tell when the "speed monitor" engages.
 
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