Garry, they are good. Although any minute now you'll get people coming here with all manner of denial!
I've used them and I swear by them. They are easier on your chain, last longer than the alloy ones and they cost... well you know that bit.
I've had a trader at my track tell me to my face they are rubbish and would never use them. I went and whipped the one I had on my kart and showed her a "rubbish" sprocket which showed hardly any wear after 2 Saturdays and one Sunday! She couldn't believe it!
The only downside to them is that you HAVE to use 6 bolts rather than only 3 as most use on the alloy sprockets. And you can't simply jump from alloy to extron as they are thicker and the carrier needs aligning.
If you are into saving money and weight, and more importantly if you are disciplined and don't mind the extra work you'll be pleased with the purchase.
Dan
|
|