Two machined aluminum cups thread together ensuring the bottom bracket remains stable in the frame Directly replaces all OEM BB86/92 bottom brackets Overall width is still the same as all other BB86 bottom brackets Improves bearing life and remedies creaking Note: Use only bottom bracket tools compatible with 16-notch MegoEvo BB`s 86/92mm BB86 Shimano HTII 24mm Alloy 98g Black