TK878EX is an excellent quality bottom bracket for Shimano and SRAM GXP cranks ( optional R23 or R383 24mm/22mm adapter, available in the Accessories tab ).
The bottom bracket is designed so that the bearings rest directly on the crank axle. The seal is made with patented X-Seals technology, which keeps water out of the bearings, which is very important when operating in harsh conditions. The bearings (premium) are very precisely made, filled with excellent bone waterproof grease. This slide is great for MTB bikes.
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