Shimano CT-S500 Chain Tensioner Alfine BlackSHIMANO ALFINE Double Pulley Chain Tensioner Perfect for SHIMANO ALFINE equipped bicycles, the double pulley chain tensioner can accommodate a front chainring difference of 16 teeth and sprockets sized 18 to 20 teeth.

Responsive

maybe Super Bowl Sunday and then they were gone

Black Weight  40g Version 2

aluminium Headset ACROS ZS56 / ZS56

Reinforced collar over keyway for increased protection

Current heart rate: 0(30)～255bpm *1

If you have any troubles with the installation

75 Black Slick

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Durable 3mm bolts and precision matching faceplate

Shifts max

when you are fitting to a 73mm bottom bracket