FEATURES

• Fast and precise shifting performance optimized to take on any trail
  • Faster and shockless shifting
    • HYPERGLIDE+
  • Wide range 12-speed drivetrain with low sprocket combination -10-51T
• Silent drivetrain in all gear positions
  • Decreased rear derailleur and chain tension in low gear
  • New bumper added to rear derailleur pulley cage
    • Bump Stopper
  • Bigger 13T pulley
• Stable drivetrain on rough terrain
  • Low-profile design
    • SHIMANO SHADOW RD+

PRODUCT SPECIFICATIONS
MODEL NO    RD-M8100-SGS
SERIES    DEORE XT M8100 Series
Color    Series color | Series color
Average weight    284
Remarks    w/Bumper on pully cage
Rear speeds    12 - 12
Compatible chain    HG 12-speed
Top-normal spring type|SHIMANO SHADOW RD+    ✔
Mount|Direct attachment (conventional)    ✔
Max. front difference    0T
Total capacity    41T - 41T
Low sprocket|Max.    51T
Low sprocket|Min.    51T
Top sprocket|Max.    10T | 10T
Top sprocket|Min.    10T | 10T
Fluoric coated link bushings    7 | 7
Pulley|Guide pulley bearing    Sealed Bearing
Pulley|Tension pulley bearing    Sealed bearing
Pulley|Teeth    13T | 13T
Pulley|Sunken type pulley screw    ✔
B-axle|Hollow axle    ✔

For more info, visit the Shimano product page