Shimano Hollowtech IIFSA Mega ExoRace Face X-TypeRotor 3D, Agilis, Rex 3Sram GXPMSRP: 129,00 €BB91-42 SKU: bb-91-42 BB91-42 GXP : BB91-42 Leave this field blank TabInfoPressfit 91 bottom bracket can be used with Specialized MTB frames (Bottom Bracket 84.5x42mm) only. MediaRob: "I have a 2010 specialized stumpjumper that has a shimano bb91-42a BB. I have xtr cranks. Do you guys make a bottom bracket I can use with my cranks so I can ditch the crappy shimano one?I must have searched for hours. You guys are the only people who make this bb besides shimano."Embedded video for BB91-42 Testimonials Click here to share your C-Bear experience. Q&A Click here to ask a Question about this product.