Since I'm converting my 450R to a more desert/trail friendly machine one of the first changes I made was a gearing change. Going up 1 tooth on the front as apposed to several teeth in the rear made sense since the bikes stock gearing is setup for MX, which is way too close for trails or desert. The one tooth change in the front is fairly substantial. It is similar to making a 4 tooth change to the rear. The bike still pulls all 1st-5th gears without a problem. Top speed is higher which helps for valley crossing and 1st gear remains usable for extremely steep technical hill climbs. On my last trail ride I handled most hills in 2nd without having to downshift or bogging down in 2nd. 1st gear would be suited for National Hare and Hound 2nd loop uphills. Overall, it is a 5 star sprocket. It took about 5 minutes to install (I'm very mechanically inclined so may take others longer). Went on easy, perfect fitment, and didn't have to remove the chain. It is a good looking part, well machined. Packaging is very nice. Very durable and performs excellent. I definitely recommend this product.