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Road    Chain Guides

N-Gear Jump Stop

The N-Gear Jump Stop chain guide is a clever device that prevents the chain from dropping when shifting to the small chainring. Just think of all the race mishaps and damaged to frames that could have been avoided with this simple device. Jump Stop allows the front derailleur to be set for maximum performance on downshifts without the worry of dropping the chain.

Features

  • 30 grams
  • Made in USA
  • Stainless steel
  • Perfect downshifts every time
  • Includes complete instructions
  • Select size from 28.6mm, 31.8mm or 34.9mm
  • Prevents chain drop when shifting to small chainring
  • $10.95
    Item #: 567370 Weight: 30g
    Qty

    REVIEWS

    Average Rating:

    11/2/2012

     Anonymous : 

    Simple instal and it works well!! It fit onto a Specialized Crux. The seat tubes are slightly square on a Crux, and this kit conformed to the square tubes . I used a longer bolt from the hardware store to make it work, but this thing works when nothing else could

    5/15/2011 1:16:30 PM

     Anonymous : 

    Great design. Very clean and mounted easily. My derailleur clamp bolt is on the left side and the drooping finger chain guides wouldn’t fit. Looks much more robust than any of the plastic ones and seems like it would function better than the finger designs. My 10 speed Campy triple on my Seven road bike worked great until their new narrower chain design they introduced last year. I couldn’t get the front derailleur to shift reliably without dumping the new chain to the inside. With the jump stop I can power through downshifts to the triple ring. I’ve had one overshift and was able to reengage the chain by just pedaling. I think I can tweak the adjustment to be even better.

    Triples are way underrated. I think they have higher and lower gears with smaller jumps than any sort of double. My old knees would keep me off the hills without a triple, and if I had used one earlier I might have avoided some of my surgeries!