hello i have an HPI E10 rtr drift Tureno and was wondering is it hard to upgrade or replace the motor ????

you can upgrade. but there are limitations. a 17 turn works good, but watch your temps. the smallest pinion you can use is a 20t and the only spur made is a 65t. maybe someone else will chime in that has overcome this

before you upgrade your motor make sure your esc, (speed control) can handle the motor you plan to upgrade to.

im running the e10 now i have put a rebal esc and 17t motor you will have to upgrade your barings, driveshaft ,spur,and motor mount thats the main stuff you need to upgrade as far as changing it all out its not to hard hardest thing is to soder it all

alright thanks for the info you were all a big help

Jeremy