• Derailleurs (aka mechs) move bikes’ chains from one sprocket to another under the command of shifters (aka gear levers). This allows riders to maintain a steady pedalling speed in various riding conditions.
  • Electronic gear shifting is trickling down from the high-end groupsets as it becomes increasingly race-proven but mechanical/cable systems still dominate.
  • The front derailleur is becoming less fashionable as component manufacturers increase the number of rear sprockets via ever narrower chains and fewer chainrings.  For years more (gears) was more – now less is!  Confused?  Don’t be.
  • There are pros & cons to all bike transmission systems; experienced independent mechanics know what’s compatible with what, how to get any bike shifting smoothly and whether you really need that extra gear.  You are the engine.
  • Most front road derailleurs are bottom pull (BP).  Mountain/touring/hybrid front derailleurs vary between BP, top pull (TP) or more recently dual pull (DP).  These acronyms refer to the direction from which your cable pulls the derailleur.
  • This page also includes a few spare parts, other frame-mounted cable guides & mech hangers are here
  • Loads more spares in stock – just ask if you can’t see what you’re looking for or are unsure.
  • Prices do not include postage, contact me if you’re interested.
  • All items are are in very good used condition unless stated otherwise, and are listed in order of price – high to low.