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Shimano Alfine Chain TensionerAllows the use of an internally geared hub on a frame with vertical drop outs. Chain Tensioner Fits 18 20t rear sprocket 16 tooth chainwrap capacity 41. 8mm chainline Uses washers on on the mounting bolt for 5mm of chainline adjustability Compatible chain 3 32" About Shimano Established in Japan in 1921, Shimano is the worlds largest bicycle component manufacturer. Whether it be drive systems, brakes, pedals or shoes, Shimano stands for reliable

- Any sport

Free Stroke adjustment for even more fine tuning

textured levers

anti fling additive and a chunk of waterproofing to keep it all in place

Second lower rail allows for lower pannier mounting and better bike handling

Stiff tripod base and rubber-coated end caps create ultimate work stand stability

IGUS™ Bushing replacements for your SPIKE or OOZY pedals help to eliminate any play that develops over time

And nobody likes a squeaky interface

Quick Link™ System makes it easy to remove the reservoir from your pack by disconnecting the drink tube with an auto shut off to prevent leakage

More than twenty years later

Fits All Frames w/discs

Park Tool's poly-urea lubricant was developed specifically for bicycle maintenance and repair