E-Thirteen E-Spec Plus Rear Wheel - XD Driver - Black - 12x148mm Boost - 6 Bolt - 35mm - Rear - 27.5 Inch netsuite-webdata-created The zero degree rise makes

The zero degree rise makes it easier to set your bar height with the use of stem spacers and the 35mm clamp allows for the use of larger diameter bars

Osprey's Hydraulics Reservoir Cleaning Kit is the answer

but it's completely redesigned to be extremely sensitive too

Caliper Design: Monoblock 2-piston caliper

E-Thirteen E-Spec Plus Rear Wheel - XD Driver - Black - 12x148mm Boost - 6 Bolt - 35mm - Rear - 27.5 Inch netsuite-webdata-created The zero degree rise makesE*thirteen has designed the new e*spec Plus wheels to meet the higher weight and increased torque loads demanded by E Bikes, but that's not to say they can't be used on regular mountain bikes. The e*spec Plus is a truly robust wheel, in a package that's light enough to be used for Enduro racing. The rear wheel is built around a new hub design that increases the dynamic load capacity by 53% and decreases axle deflection by 37% which are all nice