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Shimano Alfine CT-S500 Chain Tensioner

Item #: RD292Y00
USD$19.99
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Shimano Alfine CT-S500 Chain Tensioner

Shimano Alfine CT-S500 Chain Tensioner
    Allows the use of an internally geared hub on a frame with vertical drop-outs.
    • Chain Tensioner
    • 20 tooth max 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"
    4.4 / 5.0
    7 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    3
    4
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    I'M VERY PLEASED...
    I'M VERY PLEASED WITH THE EASY INSTALLMENT AND AJUSTMENT OF THE CHAIN LINE USING THE WASHER SHIM PROVIDED,AND THE OVER ALL SLEAK APPERANCE OF THIS PRODUCT
    March 21, 2011
    Location:
    Northriverside, Il. Usa
    Used for a 42/32/24 x 20 Drivetrain
    Love this product made by Shimano. The spring is strong. Works with any chain type. Works better than the 3 x more expensive Yess model that does the same thing. Uses shims to set up chainline and this might take two or three trys to get right.
    August 3, 2012
    Location:
    Germany
    excellent for single speed
    this is a great for making any geared bike a single speed. it allows you to run an oval front chainring and switch rear cogs without adjusting the chain.
    March 28, 2017
    Purchased
    7 months ago
    Single Speed Conversion
    I converted my MTN bike to a single speed commuter/around campus bike. Very happy with look, install, price, and quality of this product.

    I am running a 32 front and 13 tooth rear with 26in wheels. I plan to put a large front gear.
    July 28, 2016
    Location:
    Newtown, United Kingdom
    Alpine tensioner review
    Arrived in two days!

    PROS: Quiet, Easy To Install, Durable

    CONS: Heavy
    October 16, 2016
    Location:
    Maine
    Solid product!!
    I use the tensioner on a road bike I converted to a single speed. The tensioner runs very smoothly making only a little bit of noise. I had it installed at my LBS but it was very easy for them to set up the tensioner for a straight chain line.

    PROS: Lightweight, Durable, Enhances Pedaling Efficiency

    CONS: Difficult To Install
    April 7, 2014
    Location:
    Washington, DC
    Works with 8 and 10 inch travel bikes
    Have been using this tensioner on my 2009 Yeti 303R DH for two and a half seasons (75-100 park days) without a single issue.
    My father has been running this tensioner on a 2009 Santa Cruz V10 for one and a half seasons without a single issue (30-50 park days).
    We both did need to purchase a bolt and nut assembly to prevent the tensioner from wrecking our derailleur hangers, but it hasn't needed another look since being set up like this.
    Yesterday I watched my friend take my bike, ride over a metal skinny, flip the rear tire off and loudly bang my tensioner on the metal rail. The tensioner was unfased.

    PROS: Durable
    July 2, 2014
    Location:
    Vancouver, BC

    Q & A

    Start typing your question and we'll check if it was already asked and answered. Learn More
    Browse 1 question Browse 1 question and 4 answers
    How do I adjust this tensioner?
    Leanne D on Jun 9, 2017
    BEST ANSWER: Tension? You don't, but it's nice and strong and will last. Laterally? It has spacers included but may or may not get you to where you want.

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    Free Shipping Offer

    Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

    Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.