BLOW-OFF VALVE SIMULATOR--This item is a exhaust noise maker, just need to clip it on you exhaust tip, it can make turbo sound while air rushes through exhaust pipe
COMPATIBLE VEHICLES--Excellent for car, truck, motorcycle, and dirt bike with straight exhaust tip, if the exhaust tip is extremely curved, then it might not work
MATERIAL--Well made with high quality aluminium alloy for great durability, it also features lightweight and long lasting