Replacement membrane from TOURMAX specifically designed for the master cylinder reservoir of Honda XR400R and XR650R. This diaphragm replaces the worn part of the reservoir, restores sealing, and compensates for fluid level variations during long off-road sessions. Designed for the maintenance of motocross and trail machines, it prevents air entry and limits contamination of the fluid by impurities.

• Compatibility: Honda XR400R / XR650R (check year and version before installation)
• Function: ensures the sealing of the master cylinder reservoir and compensates for fluid loss
• Packaging: delivered in a pack of 2 membranes
• Brand: TOURMAX — Manufacturer reference: RVD-109

Essential during a master cylinder revision or a complete circuit overhaul, this membrane is one of the consumables that should be regularly checked (look for cracks, hardening, or deformation). By replacing the worn diaphragm, you maintain the integrity of the reservoir and facilitate the bleeding and maintenance operations of the braking system. Installation should be planned as part of routine maintenance by a mechanic or a skilled DIYer.