High-performance replacement exhaust mounting hardware kit engineered for two-stroke expansion chambers. Designed to provide a secure, leak-free seal at the cylinder spigot while withstanding extreme thermal expansion and relentless engine vibration across various motocross and off-road applications.
Specs & Details
- Manufacturer Part Number: 78-1098
- Alternative Part Number: FMF 010068
- Component Type: Exhaust Spring & O-Ring Kit / Mounting Hardware
- Material & Construction: High-temperature fluoroelastomer (Viton) O-rings and heavy-duty steel tension springs
Two-Stroke Vehicle Fitment
| Make | Model | Engine Type | Compatible Application |
| Universal | Universal / Various Off-Road & Motocross | Two-Stroke (125cc–500cc) | FMF Expansion Chamber Spigot Mounts |
TSO Garage Note
An essential maintenance item to keep on the workbench. Fresh high-temp O-rings eliminate messy exhaust drool at the cylinder port, while new heavy-duty springs ensure your expansion chamber stays firmly anchored under harsh motocross and trail abuse.
