Profile Black Jack

This is a very thick chain wheel (10mm), made for biking to the full extreme. It is very strong. This sprocket has its own bash guard made for it, so if you are looking to buy this make sure you check out the profile bash guard, designed to fit on the black jack. The only down side is that it will not work with a 3/32" chain. Other then that this is probably one of the best sprockets out there.

By Jesse Caps.

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The profile blackjack sprocket is great. Because it is 10mm thick, it is strong and is able to take plenty of abuse. I have had mine for nearly a year now and i have had no problems with it except i chipped a tooth on a ledge after a hard fall. it still works like new.so if you want a thick sprocket and don't care too much for a little extra weight, go with the blackjack.

By Mike Verrino.

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