Regarding size selection: Please first measure the inner diameter of your car's exhaust pipe, compare the size of the following figure, and choose the appropriate size. Under the appropriate premise, try to choose a size one bigger.
Applicable model: car/motorcycle modification
Under the premise of appropriate installation size, try to choose a little larger.
Made of high quality aluminum, lightweight and durable.
Notes:Make sure the exhaust pipe is big and long enough to hold the turbo sound whistle and check and retighten the bolt regularly.
Installation: First loosen the bolt on the turbo sound whistle.Next, insert the turbo car whistle into the exhaust pipe.Lastly, tighten the bolt so as not to fall off while driving.
S/Applicable displacement: 1.1-1.6 Applicable exhaust pipe diameter: 32-43 mm
M/Applicable displacement: 1.6-2.0 Applicable exhaust pipe diameter: 37-48 mm
L/Applicable displacement: 2.0-2.4 Applicable exhaust pipe diameter: 44-55 mm
XL/Applicable displacement: 2.4 and above Applicable exhaust pipe diameter: 56-85 mm