The Shimano Deore XT Groupset is the original trusted mountain bike groupset, beloved by mountain bikers worldwide. No matter the trail or ride, XT delivers reliable shifting, superior braking, and easy maintenance. Engineered for high performance, this groupset is a dependable workhorse for all your mountain biking needs. This kit now includes the new Deore XT M8200 cassette. Shimano Deore XT Groupset Includes: Shimano Deore XT M8100 Series Crank Arms Model: Hub Spacing: Chainline: Q-factor: Weight: FC-M8100 135/142mm or 141/148mm (Boost) 52mm 172mm 620 grams FC-M8120 141/148mm (Boost) 55mm 178mm 628 grams FC-M8130 157mm (Superboost) 56.5mm 181mm 636 grams Shimano Deore XT SM-CRM85 Chainring Available sizes: 28t, 30t, 32t, 34t, 36t Shimano CS-M8200-12 Cassette Cogs: 10-51t: 10-12-14-16-18-21-24-28-33-39-45-51 Freehub Interface: Microspline Average Weight: 10-51t: 458 grams Shimano SL-M8100-IR Shift Lever Mount: I-SPEC EV Max Multiple Shifts: 4 Shifter Type: Rapidfire Plus Average Weight: 120 grams Shimano RD-M8100 Rear Derailleur Cage Length: SGS/Long Max Low Sprocket: 51t Min Low Sprocket: 45t Pulley Size: 13t Average Weight: 284 grams Shimano CN-M8100 Chain # of Links: 138 Roller Link Plate: Sil-Tec Quick Link included