Is it possible to do so?
It is not possible to fit the Yamaha R1 headlight on the R15. It can actually be tried at a modification shop but would not be a good option as the size of the chassis, nut-bolt positions and all the stuff is different in both the bikes. You can easily get your R15 custom wrapped with your favorite shade and make it look outstanding out of the regular ones. R15 retails for INR 1,15,241 for the single long seat version (R15-S) and INR 1,18,373 for the version 2.0.