This RWC exclusive pairs the best quality bottom bracket with the best BB cup wrench available.

The bottom bracket (MTB for 68mm & 73mm BB shells):

(BKC-6802) ENDURO XD-15 Pro BBs feature XD-15 15degree Angular Contact cartridge bearings pressed into precision machined aluminum cups that simply thread directly into the BB shell. Utilizing the same XD-15 steel as our XD-15 Corsa bearing, Enduro XD-15 Pro bearings offer a 15degree angular contact sealed bearing in a standard-sized cartridge. XD-15 Pro bearings feature deep-groove raceways allowing for maximum sized Grade 3 Silicon Nitride ceramic balls for for increased contact area and improved performance and longevity. Enduro XD-15 bottom brackets are manufactured to the highest standards at the Enduro Bearings production facility in California, USA. Enduoro XD-15 bearings combine corrosion-proof, cryogenically treated nitrogen steel races with Silicon Nitride Grade 3 ceramic balls in a proprietary process that results in the ultimate high performance bearing setup.

The cup wrench:

The RWC Outboard BB Cup Tool offers several advantages over other bottom bracket tools for external BB cups:

-The open design allows you to confirm full engagement of the cup notches (unlike a centered socket tool, which is "blind.")

-The wrench is reversible to account for differences in cup notches--some notches are shallow and towards the front, others cut far into the cup. The reversible design allows you to select the position that gets the best "bite" on the cups, and also centers the wrench to prevent slippage.

-Unlike a stamped steel wrench, our "crow's foot" design allows the use of a torque wrench (simply snap onto the torque wrench at a 90 degree angle to the handle).

Fits almost all external BB cups for cranksets with 24mm spindles, such as:

-Shimano HT2 cups (standard, not "mini"--see product pictures)
-Real World Cycling HT2 and GXP bottom bracket cups
-Enduro HT2 and GXP bottom bracket cups
-RaceFace BB cups for 24mm spindled cranks
-Rotor BB1
-SRAM/TruVativ GXP external cup
-Bontrager "GXP" type external cups
-FSA Mega EXO cups
-Chris King Threadfit 24
-Campagnolo UT/PT threaded cups