so three teeth of sprocket+ one tooth of driver+half link only wieghs out to a grams???thats funny...but not true...anyways im not saying its better than 25-9 as far as stress levels cus obviusly it would have slitly more....and it isnt a big inovation that would help too many kids out ther cus it isnt as reliable as running biger driver,sprocket and more chain........i myself as a street rider use the 8-22 setup only cus it tucks closer under my peg and out of the way of smashing on leges and coping...