hmm, i have sent a few emails to them but they dun reply. does anyone know the price of piston/linear? my turbo head is also slightly damaged, anyone knows if its the same as OS 12TZ, coz i remember OS Speed doesn't modify the turbo button.

thanks guys for the part no. i remember i saw it last time somewhere in HK on the OS SPeed linear and piston. so i will just get this part no. to confirm on it. thanks.

oh, u can use the piston/linear set on ur stock TZ, but it will be not as powerful as the OS Speed, since crankshaft, and body is also modded. but i think it will be more powerful than stock TZ if u were to replace just the piston/linear.