Hello, Welcome to our store. Quality is our top priority, and we provide excellent customer service. Dimensions: 12 x 7.5 x 3.5 cm / 4.72 x 2.95 x 1.38 in (L x W x H) Weight: 128 g Package Includes: - 1 x Exhaust Pipe Sound Simulator (Fake Blow-Off Valve) - 1 x Set of Screws - 1 x Spanner Sizing Guide: - S size: Suitable for engine displacement 1.0–1.6 L; exhaust pipe diameter 32–43 mm - M size: Suitable for engine displacement 1.6–2.0 L; exhaust pipe diameter 37–48 mm - L size: Suitable for engine displacement 2.0–2.4 L; exhaust pipe diameter 44–55 mm - XL size: Suitable for engine displacement above 2.4 L; exhaust pipe diameter 56–85 mm Product Name: Exhaust Pipe Sound Simulator Available Colors: Silver, Gold, Black, Blue, Purple Features: - Produces a clear, whistle-like sound - Universal fit for most vehicles with straight exhaust pipes - Easy to install - Sleek, modern design Important Notes: - This product is designed for straight exhaust pipes only — not compatible with bent or curved exhaust pipes. - The sound produced is similar to a flute or whistle — not a turbo blow-off or sports car sound. - Not intended to replicate OEM turbocharger functionality. Package Includes: 1 x Exhaust Pipe Sound Simulator (color selected at random unless specified).