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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22
SLX BR-M666
gravel-worthiness
Our Performance Bundle offers a noticeable improvement in your drivetrain at a competitive price
Previous generations might have used the short version
Replacing your stock pulleys with a ceramic 12-tooth top pulley and a 19-tooth bottom pulley
Shimano Speed Kolossos Oversized Derailleur Cage - GRX 2x (11- and 12-speed, mechanical & Di2) Color:Black SLX BR-M666Kogel Speed Kolossos for Shimano GRX 2x (11 & 12 Speed, Mechanical & Di2): The Fastest Oversized Derailleur Cage for Gravel Gravel doesnt mean slow. The all new Kogel Speed Kolossos for Shimano GRX 2x (11 & 12 speed, Mechanical & Di2) is designed to bring unmatched efficiency and performance to mixed terrain riding. Whether you're racing gravel, tackling epic adventures, or just looking for a smoother, more efficient drivetrain, this oversized
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