I feel the Acerbis chain block I purchased for a 1996 CR250R was an excellent value. Sure, there are better looking and fancier blocks on the market, but do you really need to spend 25 or 30 more dollars for an item which does exactly the same thing?
You will not be disappointed with this product!!!!
Acerbis always makes a good product, With a O-ring chain on My 07crf450r using a clip type master link I had to remove some material from guide so it wouldn't catch on the master link. Takes some trial and error. but other than that it fits fine.