Shimano-MTB - #ThrowbackThursday - Back in 1992 XTR M900 was born. The ultimate in off-road component systems. The "R" was added to highlight that it is a "racing model" of Deore XT.
Shimano XTR M900 group | Retrobike
Shimano speeds up XTR delivery w/ non-series MT900 crank, groups available now - Bikerumor
Shimano XTR M900 1st Gen Hubset: 32H x 135mm - 8 Speed - HB-M900 / FH-M900 (Mint Rear + EXC Front) - Bike Recyclery