Welcome to our store. Quality is our top priority, with excellent service. Dimensions: 12 x 7.5 x 3.5 cm (4.72 x 2.95 x 1.38 in) Weight: 128 g Package Includes: 1 x Exhaust Pipe Turbo Sound Fake Blow-Off Simulator 1 x Screws 1 x Spanner Size Guide: S size fits engine displacement 1.0–1.6 L, exhaust pipe diameter 32–43 mm M size fits engine displacement 1.6–2.0 L, exhaust pipe diameter 37–48 mm L size fits engine displacement 2.0–2.4 L, exhaust pipe diameter 44–55 mm XL size fits engine displacement above 2.4 L, exhaust pipe diameter 56–85 mm Product Name: Exhaust Pipe Whistle Simulator Color Options: Silver, Gold, Black, Blue, Purple Features: - Produces a clear whistle-like sound - Compatible with most vehicle models - Easy to install - Sleek and stylish design - Designed for straight exhaust pipes only — not compatible with bent or curved exhaust pipes Note: This product produces a flute-like sound, not a sports car exhaust sound.