Token's Ninja bottom bracket solves the creaking issues of pressfit brackets, improving bearing life and adding stiffness to the bottom bracket.It incorporates Fusion technology; it is a combination of plastic and fibre that covers an alloy bottom bracket shell. The composite material allows it to be precisely machined and fit snugly in the frame so it doesn’t move in the frame. The bearings themselves are housed in the alloy shell and wrapped with the plastic and fibre. This fusion of the three materials provides the bearings a solid platform to sit on and extends their lives. The two sides have been extended to meet in the middled with a threaded interface, so the right and left sides lock together. This locks the frame, cranks and bottom bracket together and improves stiffness.   Features Designed to reduce creaking. Improves bearing life. Increases stiffness. Fusion technology combines plastic and fibre. Alloy shell. Threaded interface locks the drive side and non-drive side together. Designed for use with TREK BB90 / BB95 bottom brackets and 24mm axles chainset axles.   Will fit frames with the following BB TREK BB90. TREK BB95.