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The brake levers of the ST-R8170 are made of lightweight aluminum
low sprocket: 34T
HOOD SHAPE OPTIMIZED FOR FLARED HANDLEBARS - With a rounded profile
Using SHIMANO's new MICRO SPLINE freehub body and HYPERGLIDE+ tooth profile
SHIMANO GRX - Hydraulic Disc Brake Lever
SRAM X01 eagle chain 12s MTB bike chain Electronic Derailleur The brake levers of theDESCRIPTION It might look normal from the outside, but the engineering inside this incredible chain design makes possible a gear range previously found only in 2 chainring drivetrains. And it's also the biggest contributor to the Eagle drivetrain's ultra smooth, precise, durable and quiet performance. The Eagle chain's links have a smooth radius, with no sharp edges or chamfers, which yield a significant reduction in noise, friction and wear on
