Todays project is the Shigura brake conversion.
Since the master cylinder seal went out on my Magura's and replacement parts are a month out, I ordered a set of Shimano XTR levers to replace them with. Plus the Magura levers being made out of plastic, are in my mind the weakest link in that brake system. Not to mention I'm not the biggest fan of how there lever blades feel, but after 800 miles I did get used to them.
This consists of pairing Shimano levers with Magura calipers. The premise here is that the Shimano (4 piston compatible levers) have a longer but smaller diameter master cylinder bore than the Magura levers. This compared with the very large Magura 4 caliper pistons creates a much more favorable hydraulic ratio. In short, it theoretically gives you more power. I this case I am using the new XTR BL-M9120 Levers. In reality any of the XX2X or XX1X series of levers from Shimano will work as they are all 4 piston capable.
Everything on the Magura Caliper end stays the same.

You must use the Shimano hose barbs and olives. L to R is Magura, Sram and Shimano. The Magura barb has the longest head of the 3, Shimano has the thinest. Plus Shimano olives are a full MM shorter than the Sram and Magura offerings. In a pinch you could probably get by with mixing up the Magura / Sram olives (just dont cross contaminate those fluids), but Shimano needs its only barbs and Olives.

Here is a selection of various hose nuts, L to R matura native, Magura that goes into their lever banjo swivel, Shimano external thread, and Sram. The Magrua, Sram and Shimano internal style all use the same threads and are roughly the same length. These are interchangeabe.

These new Shimano levers are I-spec EV so they are close enough of a fit, you can use them with the Sram matchmaker system, no adapter needed. Thats a Sram match maker nut in the Shimano stock lever mount.

With the proper barb and olive on the hose, the brake line gets torqued to 6NM. I then bled the system, using a syringe at the caliper and a Shimano funnel at the lever, I pushed all new fluid threw the system. Pulled suction with lever, then pushed through and repeated a few times. Closed off the caliper bleed port, and then finished bleeding the lever with the funnel.

To compare the two systems, I left the stock Magura system on the font and went for a ride.
All I can say is WOW, the Shigura system has a stupid amount of power over the stock Magura. The stock Maura's never made me wish for more power, as they where plenty strong enough to stop the E-bike on even the steepest terrain here in Bellingham. However the Shigura setup blows it out of the water. The rear brake is now so strong, it makes the Magura front feel like its useless. The rear Shigura system is so strong, it will full stop the bike on its own, and make you want to catapult over the front. So you need to get comfortable with its power. For reference with the E-bike in trail mode, you can still pedal (with a bunch of resistance) against the stock Magura front brake. You can not pedal against the Shigura rear brake.
The modulation feels great. However, the Shigura setup, has that same vague bite point partway not the lever travel that all Shimano's are known for. I've ridden enough Shimano systems, I am used to it. I do prefer the very firm bite point of the Codes tho, but this system is way stronger than the stock codes, stock Magura,s or even the stock Saints. I will be converting the front next.