The N-Gear Jump Stop clamps to the seat tube and prevents the chain from overshifting off the inner chainring when you shift to a lower gear. There are three versions; one each for 1 1/8" seat tubes, 1 1/4" seat tubes, and 1 3/8" seat tubes. The fixing bolt (a 4mm allen key, provided) faces forward, so all you need to remove from the frame would be a water bottle cage on the downtube to make mounting the Jump Stop easy. A competing device, the Third Eye Chain Watcher is a one-size-fits-all affair, and was the first device to offer overshift protection. But it is harder to install, and the part that the chain slides against is plastic, vs steel for the Jump Stop. I've stopped selling the Third Eye in favor of the N-Gear Jump Stop for those reasons.
Computer & Light mounting aid
The NOB is a small cylinder attached to a hose clamp, all made of nylon. When installed on any tube of your bike, you can mount a cycle computer, or many other things intended to mount on your handlebar, like a Lumotec headlight.
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This page updated: Thursday, December 9, 2010
Peter White Cycles