improving the OVERALL performance of our snipers is not dependent on one part alone. its always THE SUM OF ITS PARTS. installing the low speed primary gear TOGETHER with a good transmission ratio will give you gains in performance on your intended purpose. like what chie said, it will produce a better low end (that i need in drag), not much top end. depends on distance traveled. in drag you want your motorcycle quick of the block then reaches 4th gear at the finish, there you manipulate transmission ratio (there are alot of ratios coming out). thats why up to now i am still searching for the ratios i need. is this primary gear good for long rides (often asked) personally i will install it in my daily driver but i will still manipulate the transmission suitable for touring still using the benefit of the increased torque due to low speed ratio this ikk primary gear provides. i am not after top speed always but a balance in the power of the motorcycle.