• Warning!!

    Riding a tuned or deristricted EMTB is not a trivial offence and can have serious legal consequences. Also, many manufacturers can detect the use of a tuning device or deristricting method and may decline a repair under warranty if it was modified from the intended original specification. Deristricting EMTB's can also add increased loads for motors and batteries. Riding above the local law limit may reclassify the bike as a low-powered bike, requiring insurance, registration and a number plate.

    Be aware of your local country laws. Many laws prohibit use of modified EMTB's. It is your responsibility to check local laws. Ignoring it, has potential implications to trail access, and risk of prosecution in the event of an accident.

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    We advise members great caution. EMTB Forums accepts no liability for any content or advice given here. 


What motor is easy to deristrict?

SteveD

New Member
Dec 9, 2022
8
0
Belgium
What motor is easy to deristrict on a new emtb?
I know there are solutions for every motor. But i am worried about the fact that the manufacturer software can detect redistriction.
Bosh motors are probably the worst option.
Is the Yamaha motor a good option?
Any advise is welcome.
 

Sander23

Active member
Aug 28, 2020
692
428
Belgium
My bosch cx gen 4 works perfectly derestricted for 2500 km with bikespeed rs as long that I don't update my firmware above the version they have tested it on
 

Alexbn921

Well-known member
Sep 27, 2021
545
506
East Bay CA
No company will warranty a motor if it's de-restricted. Changing the cutoff speed has zero effect on engine life.

That's why you take off your de-restrictor before warranting the motor.
 

Stihldog

Handheld Power Tool
Subscriber
Jun 10, 2020
2,894
4,085
Coquitlam, BC
No company will warranty a motor if it's de-restricted. Changing the cutoff speed has zero effect on engine life.

That's why you take off your de-restrictor before warranting the motor.
Isn’t there a way that they can detect maximum speed under peddling assist through the programming or during an update?
 
Dec 5, 2022
53
46
Brisbane
No company will warranty a motor if it's de-restricted. Changing the cutoff speed has zero effect on engine life.

That's why you take off your de-restrictor before warranting the motor.

Is there a way to de restrict the ep8 and convert it back prior to warranty? I dont care about complete de-restrict, but 35km/h would be nice.
 

Alexbn921

Well-known member
Sep 27, 2021
545
506
East Bay CA
I personally wouldn't use a dongle. Any mechanical gear reduction magnet will work and is undetectable as long as you don't hook it up to your phones gps.
Shimano has an app that works too. Don't know too much about it.
I'm not offering legal advice and everyone has their own threshold for how far they push the limits.
I also wouldn't try and alter the max power or wire in a diy battery.
 

SwampNut

Well-known member
Oct 26, 2022
272
337
Peoria, AZ USA
1672267183950.jpeg
 

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