BOLT MC Hardware YZEX125CC Exhaust O-Ring Spring Coupler Kit - 2-Stroke

The BOLT MC Hardware YZEX125CC is a complete two-stroke exhaust hardware kit designed to restore a proper, leak-free seal throughout the exhaust system. This kit replaces worn or damaged expansion chamber seals and springs with model-specific components built to OEM fit standards.

Kit Includes:

• Viton® Rubber Pipe O-Rings — Model-specific green Viton® rubber O-rings provide superior heat and chemical resistance compared to standard rubber seals
• Pipe-to-Silencer Coupler/Sleeve — Replacement coupler restores a snug, airtight connection between the expansion chamber and silencer
• Exhaust Pipe Springs — Replacement springs secure the expansion chamber and maintain proper pipe alignment

Viton® rubber is widely used in high-heat exhaust applications due to its excellent resistance to elevated temperatures and exhaust gases, making it a reliable long-term replacement over standard rubber O-rings. This is a direct OEM-style replacement kit — no modifications required for installation.