Shimano Bike Cassette Sprockets (M9001, M810045, M810051, M8000, HG500, HG50)

CS-M9001 11-40T, XTR, FOR 3X11-SPEED, 11-13-15-17-19-21-24-27-31-35-40T Wide range 11sp cassette Rhythm step gear progression HG-X11 specific tooth profile Aluminum, titanium and steel cogs SPECS COMPATIBLE CHAIN: HG-X11SERIES: MF-TZ500NUMBER OF SPEEDS: 11FINISH: AnodizedWEIGHT: 330g   CS-M810045-12,DEORE XT, 10-45T, 12-SPEED(HYPERGLIDE+), 10-12-14-16-18-2 1-24-28-32-36-40-45T CS-M810051-12,DEORE XT, 10-51T, 12-SPEED(HYPERGLIDE+), 10-12-14-16-18-2 1-24-28-33-39-45-51T COMPATIBLE CHAIN: HG 12-SPEEDSERIES: XTNUMBER OF SPEEDS 12FINISH: Anodized   Deore XT CS-M8000 11 Speed Improved driving efficiency and stable shifting Shave bike weight off without sacrificing durability or reliability Optimal balance of lightweight and durability Ride anywhere with smooth and precise gear changes Combination of aluminum (40T) and steel gears Optimized gear combination and gear ratio Gear combination: 11-40T, 11-42T, *11-46T (new) *11-46T only compatible with 1x11-speed drivetrain 11-40T (for 3/2/1x11-speed) Wide cassette sprocket 11-40T 11-42T (for 2/1x11-speed) Rhythm step gear progression 11-46T (for 1x11-speed)   HG500 10 Speed 11-42T  Light weight spider construction Wide range and smooth gear steps optimized for a broad scope of riding styles DYNA-SYS compatible system for smooth/stable shifting and driving 11-42T High-efficiency drivetrain supports aggressive trail riding   CS-HG50-10, 10-SPEED 11-13-15-17-19-21-24-28-32-36T Series: TIAGRA/SORA CS-HG50-10 Cassette 10-speed SPECS COMPATIBLE CHAIN: HG-XFINISH: Cr plated