If you attach it to the front derailleur clamp, you no longer have to worry about the chain falling inwards when shifting onto the small chainring. Even when the limit screw of the front derailleur is completely open, the chain is guided cleanly onto the chainring by the catcher. Installation works in most cases, but requires a longer M5 bolt than the manufacturer intended for certain clamps. A thicker spacer disc may also have to be inserted for very steep seat angles. For front derailleurs with an integrated mounting clamp, a version is available that is mounted directly on the seat tube. However, it only fits round tubes.
PLUS: lightweight; fits any pipe shape
MINUS: expensive
Reference/InfoShocker Distribution, phone 09941/179882, www.shocker-distribution.com
Price: 50 Euro
Photo: Ronny Kiaulehn
