I've been running the N-Gear Jump Stop for the last year on my 1x9 and it's worked great for what it is meant for. I've never dropped a chain on the inside but without a bash guard or chain guide its popped off the outside a number of times even using a single speed chainring. My cheapo solution was to modify the N-Stop, rode it today over some pretty rocky terrain and it worked perfect. Will give an update as I get more miles on it.
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Thread: Cheapest, lightest chain guide?
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