BB Wheels Manufacturing Shimano BBright Thrd Together Out BK Top-notch bottom bracket No more creaking. Smooth operation. Fast bearing replacement. Thread together bottom bracket for use with 24mm spindle Shimano cranks in frames using the BBRight bottom bracket standard. Two machined aluminum cups thread together keeping the bottom bracket stable in the frame, increasing bearing life, and simplifying maintenance. Key Features BBRight Outboard BB for 24mm spindle Shimano cranks Machined aluminum cups thread together so bottom bracket remains stable in frame Includes 2 silicone dust seals Includes 2 - 0.5mm crank spindle spacers, 2 - 1.0mm crank spindle spacers Enduro ABEC-3 bearings and silicone dust seals Tool Pattern: 48.5mm x 16 notch Made in USA Specifications Part Number 558899 Color Black Size 79mm x No axle Model Year 2026 Weight 146g