More teeth on the front sprocket the less power you have but also have lower RPMs at any given speed. I run a 16 tooth, I like the grunt and can still go well over 100 MPH. I do ride long distance and it doesn't hurt that at all for me.
The X ring is better as far as sealing lube in and dirt/water out. O ring has a single sealing surface the X ring has 2. I run the X ring and do not lube or clean it at all. Last chain was changed at about 25,000 miles with no0 visible wear on the rear sprocket and only slight wear on the front. The chain was still OK too but I just changed it for peace of mind. I like the Triumph stuff.
I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!
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