For vehicles with small displacement, you should choose a large size and a large displacement. You can choose a small one, because the principle of whistle sound is by airflow. The displacement is large. The bigger the whistle, the easier it is to make a sound. No. Displacement for 1.0-1.6, exhaust pipe diameter 32-43 mm M is suitable for 1.6-2.0 displacement, exhaust pipe diameter 37-48 mm L is suitable for 2.0-2.4 Displacement, exhaust pipe diameter 44-55 mm XL number is suitable for displacement above 2.4, exhaust pipe diameter 56-85 mm [Product introduction] Product name: exhaust pipe whistle car sound whistle Ring throat drum modified imitation turbine pressure relief sound product color: silver

Dimensions: S
Product Size: Approx. 10.3X3.1X1.9cm
Net Weight: Approx. 68g

Size: M
Item Type: Silencer
Product Size: Approx. 10X3X2.4 cm
Net Weight: Approx.74g

Dimensions: L
Product Size: Approx. 11X3X2.9 cm
Net Weight: Approx.98g

Dimensions: XL
Product Size: Approx. 11.4 X 3.4 X 3.1 cm
Note:
Please allow 1-3mm errors due to manual measurement.
Due to different displays and different colors, the picture may not reflect the actual color of the item. Thank you for understanding.