SHIMANO CT-S500L Alfine Bicycle Chain TensionerPerfect 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. Product Specifications MODEL NO CT S500 SERIES ALFINE S7000 S700 Series Color Silver Black Compatible cassette sprocket CS S500 Max. rear sprocket 20T Min. rear sprocket 18T Dropout Vertical drop end type Structure Double pulley Compatible chain CN HG93 CN HG73 CN HG53 Max. front

accommodating various sizes of spoke holes

5-layer laminated materials

By infusing air directly into the grip material

* Replacement chainring​​

high-end finish to the classic clog silhouette

Placement: Measure around the largest part of your head

It's wider in the rear than typical race saddles for good support of a woman's sit bones

2-in-1 Sizing: Includes a Footboard Sizer to adjust the fit—keep it in for a snug

min-width: 400px

Foodsafe HDPE Bottle

and dropper Seatposts

Technology: D3O® GRIP™ Material Science