Check the listing for details. Vintage Shimano XTR FC-M951 Crankarms 180mm For Triple / Singlespeed Octalink V1. Color: Gray, Condition: Used, Made in Japan. Listed at 44.99 USD. Used Shimano XTR FC-M951 crankarms in 180mm length. They have their share of wear marks and scratches but their functionality for a singlespeed application or for their original triple setup is still fine. They come with their lockring and snapring for installing chainrings. All the threads and splines are in excellent condition. No crankarm bolts or self extracting caps are included. 427g set weight. These require a Shimano XTR BB-M950 or BB-M952 bottom bracket with 5mm splines. Shimano BB-7700 or BB-6500 road bottom brackets also use V1 splines, but may result in improper chainlines depending on your application due to spindle length..Used Shimano XTR FC-M951 crankarms in 180mm length. They have their share of wear marks and scratches but their functionality for a singlespeed application or for their original triple setup is still fine. They come with their lockring and snapring for installing chainrings. All the threads and splines are in excellent condition. No crankarm bolts or self extracting caps are included. 427g set weight. These require a Shimano XTR BB-M950 or BB-M952 bottom bracket with 5mm splines. Shimano BB-7700 or BB-6500 road bottom brackets also use V1 splines, but may result in improper chainlines depending on your application due to spindle length..