Pricing has nothing to do with good exhaust brands. If your modding ur blaster just to say you spent so much money on it....give it away to someone that will actually ride the damn thing like it should.
Now if u want to mod it for the power..there are lots of pipes out there,just depends on what u plan to do with ur quad and how far u want to modd it. Alot off ppl like the TOMMEY exhaust or the SHEARER..there both great pipes. Theres alot FMF,Pro Circut,Factory Seven(my choice)..ect ect. All depens what u wanna do with the blasty tho.