Race Face Chester Mountain Bike Crankset

i would like to know if i am buying arms, chain rings, BB, bash guard? this for a 170mm 68BBthanksjuan

I've had this crankset/BB setup for about 3 months on my 650b SS. The crank itself is definitely strong and feels good, especially when laying the power down. However, the Bottom Bracket is a different story. One 27 mile race through damp trail and creeks has proven the end of the bearings. The left bearing has seized altogether and the right sounds like it's filled with sand (but it's most likely rust) :( Upon inspection looks like water has gotten behind the delicate plastic bearing covers and into the "sealed" bearings themselves. That's right, these bearings are suppose to be sealed....apparently not well enough.