Bikeradar - The world is for riding

1. 

   Campagnolo Centaur Rear Mech

   5

   $79.54

   There's no point trying to improve on something that works well, doesn't...
2. 

   SRAM Rival Rear Mech

   5

   £64.99

   The Rival has a look of quality that surpasses the similarly priced Ultegra...
3. 

   Shimano XT Shadow Rear Mech (08)

   5

   $109.95

   Tricky to set up but tough as they come
4. 

   SRAM Force rear derailleur

   45

   $17

   Top-notch shifting from the bros at SRAM.
5. 

   Shimano Ultegra SL RD-6600-G rear derailleur (08)

   45

   $110

   Flawless shifting where it matters most.
6. 

   Shimano RD-4500

   45

   $55.99

   The improvements to the new kit mean that this rear mech wouldn't look out...
7. 

   SRAM 2007 X-9 Rear Mech

   45

   £64.99

   The 2007 X-9 gear system looks a lot like the amazing 2006 X.0 set and it's...
8. 

   Shimano XTR Shadow Rear Mech (08)

   45

   $239.99

   Super-durable but needs tinker time
9. 

   SRAM X9 Rear derailleur

   4

   £65

   The SRAM X.9 rear mech loses the carbon fibre and titanium of the X.0, but...
10. 

    SRAM X.0 Rear Derailleur

    35

    £174.99

    Beefed up but inordinately expensive
11. 

    Campagnolo Xenon Rear Mech

    $45.73
12. 

    SRAM X7 Rear Derailleur

    £40

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