Buy from a store
Choose fulfilment, a variant and a store offer to checkout.
⌘K
Shimano · Rear derailleur (mountain bike, 1x12)
A long-cage 12-speed SLX derailleur with a bumper on the cage.
$129.99
PriceIn stock, ready to ship
A Shimano SLX long-cage rear derailleur for 1x12-speed mountain bikes. SHADOW RD+ and a bumper on the pulley cage keep the chain settled, and it takes cassettes up to 51T.
Sold by Ashburton Cycles
Verified store
Price
$129.99
Speeds
12-speed, single chainring (1x12)
Cage
Long cage (SGS), up to 51T
Total capacity
41T
The Shimano SLX RD-M7100-SGS is a long-cage rear derailleur for 1x12-speed mountain bike drivetrains. It takes cassettes from 10T up to 51T, has a 41T total capacity, and weighs 313 g by Shimano's own figure.
SHIMANO SHADOW RD+ keeps the chain stable on rough ground, and Shimano added a bumper on the pulley cage that absorbs chain impact on aggressive terrain. Derailleur and chain tension are lower in the lowest gears, and the bigger 13T pulleys help efficiency and chain control.
Trail riders on a 1x12 Shimano mountain bike drivetrain who ride rough ground and want a quiet, settled chain.
Bumper on the pulley cage
Absorbs chain impact on aggressive terrain, according to Shimano.
SHADOW RD+ stabiliser
Reduces chain slap for a quiet drivetrain in every gear.
Lower tension in low gear
Shimano reduced the derailleur and chain tension in the lowest gear positions.
13T pulleys
Larger pulleys for better efficiency and chain control.
Every detail as listed by the manufacturer.
Shimano · Rear derailleur (mountain bike, 1x12)
A long-cage 12-speed SLX derailleur with a bumper on the cage.
$129.99
In stockSpeeds
12-speed, single chainring (1x12)
Cage
Long cage (SGS), up to 51T
Total capacity
41T
Weight
313 g (Shimano's average, with bumper)
A Shimano SLX long-cage rear derailleur for 1x12-speed mountain bikes. SHADOW RD+ and a bumper on the pulley cage keep the chain settled, and it takes cassettes up to 51T.
The Shimano SLX RD-M7100-SGS is a long-cage rear derailleur for 1x12-speed mountain bike drivetrains. It takes cassettes from 10T up to 51T, has a 41T total capacity, and weighs 313 g by Shimano's own figure.
SHIMANO SHADOW RD+ keeps the chain stable on rough ground, and Shimano added a bumper on the pulley cage that absorbs chain impact on aggressive terrain. Derailleur and chain tension are lower in the lowest gears, and the bigger 13T pulleys help efficiency and chain control.
Trail riders on a 1x12 Shimano mountain bike drivetrain who ride rough ground and want a quiet, settled chain.
Bumper on the pulley cage
Absorbs chain impact on aggressive terrain, according to Shimano.
SHADOW RD+ stabiliser
Reduces chain slap for a quiet drivetrain in every gear.
Lower tension in low gear
Shimano reduced the derailleur and chain tension in the lowest gear positions.
13T pulleys
Larger pulleys for better efficiency and chain control.