This rearmaster cylinder is a direct replacement part for Revvi 18 and 20 electric bikes. Ideal if you are looking to replace and old damaged master cylinder but the rest of the brake system is still intact or in good condition.

• OEM Replacement: Direct fit for Revvi 18″ & 20″ rear hydraulic brake systems

• Pre-Assembled: Includes reservoir and brake lever

• Restores Braking Feel: Ideal for fixing leaks, worn seals, or damaged levers

• Easy Installation: Direct replacement with no modifications needed