I just dropped these in my Rad Wagon 4, installation was a breeze! Need to use the spacers that come on the existing Rad Wagon brakes and use the included shorter bolts for the front caliper - 45 minutes done and done.

The feedback that others have provided seem to be spot on - here's my hot take.

My daily trip to drop off kids at school is about 3.5 miles each way with an elevation drop of 1000' on the way to school - I'm on those brakes pretty hard for at least 1/3rd of the trip to school with almost 300lbs on the bike.

When I was able to get the stock brakes adjusted perfectly, I'd say they probably perform equally as well as the Juin Tech M1s.

There were a few downsides with stock.

I had to adjust the stock brakes on the weekly to keep up that level of performance, such a pain. Not to mention the rear wheel protective shield that comes stock on the bike prevents you from easily accessing the rear brakes fixed pad adjustment bolt... So either take off the protective shield and risk kid clothes entanglement in chains/wheels or spend an hour removing and reattaching the plastic shield (seems like it wasn't intended to be removed so frequently if at all) so you can make the adjustment - in my case weekly... 

I also found that the stock brakes were super noisy - especially at the end of a hot downhill ride! Quite possible this could be due to less than perfect adjustment...

For me, even if the performance is identical between stock and the Juin Tech, not having to mess around with weekly brake adjustments is completely worth the spend.

As for full hydraulic vs hybrid (cable pull) hydraulic system, I can't really say. My guess is that a full hydraulic system is more like a next-level upgrade providing a better brake feel compared to hybrid. Seems like 4 piston hydraulic brakes would provide more stopping capability - perhaps they are more common in full hydraulic systems - the ones I saw were twice the price at around $350...

I've only got about 20 miles on the Juin Tech M1s so if the performance changes I'll be sure to pop back in here and give an update.

Hi All,

I'm a new Rad Wagon 4 owner living in the hills of Oakland CA. With the standard controller, the bike had a hard time making it up a few steeper hills on my ride home. 

After seeing a youtube video on the 35A controller upgrade, I decided to take the plunge and make the switch.

The hardest part of the install was designing and 3D printing a bracket to mount the controller to the bike, but now I have a really clean solution. I printed it out of Carbon Fiber reinforced Nylon which is pretty tough stuff... Only time will tell how well it holds up!

Outside of that, controller installation was as easy as it gets and I found the general riding experience comparable to the stock controller - only with more torque. I can now conquer the steep hills that were a struggle before, even with the 2 kiddos on the back. There's probably some more tuning to do on the controller settings, as I've found myself using PA2 instead of PA3 that I was using before... All comes down to personal preference here.

Given that the new controller sends more power to the motor, I'm sure it will impact the battery range, however, range isn't really my main concern - getting back up those steep inclines are! - I consider it a successful upgrade.