4Pcs M12 Brake Master Cylinder Sight Glass Window with Gasket Kit, Universal for Motorcycle Scooter ATV Dirt Bike

Important Notes Before Ordering Thank you for choosing our sight glass kit! To ensure you get the right fit and avoid any disappointment, please note: What’s Included: The package contains 4 sight glass windows and 4 rubber gaskets only. The brake master cylinder shown in the photos is for installation reference and demonstration purposes, and is not included in the kit. Size Confirmation: Please carefully measure the diameter of your original sight glass opening before purchasing. This kit is designed for 12mm / M12 sight glass holes only. Installation Tip: For best sealing results, make sure the gasket is correctly positioned. Do not use excessive force during installation to avoid damaging the sight glass. If you have any questions about fitment or installation, please contact us before ordering. We are always happy to help!

• What You Get This kit includes 4 pieces of M12 brake master cylinder sight glass windows and 4 matching rubber gaskets. The brake master cylinder in images is for reference only and not included.
• Fitment Details Fits most motorcycle, scooter, ATV, and dirt bike brake master cylinders with 12mm sight glass openings.
• Leak-Proof Sealing The included gaskets provide a tight seal to prevent brake fluid leaks and ensure stable brake performance.
• Durable & Clear Lens Sturdy metal frame with transparent lens for easy viewing of brake fluid levels at any time.
• Easy Installation Direct replacement design. Please confirm your sight glass opening size is 12mm before ordering.