







🚴♂️ Upgrade your ride with unstoppable stopping power!
The EXNAVI 4 Piston Hydraulic Brake Repair Parts Upgrade Kit is a premium ceramic piston replacement designed exclusively for select Shimano brake calipers. Featuring automotive-grade phenolic resin, it offers exceptional heat resistance above 400°C and a turbofan airflow design for optimal cooling. This kit solves common issues like piston cracking and oil leakage, ensuring durable, reliable braking performance for serious cyclists.








| Item Package Dimensions L x W x H | 4.17 x 1.77 x 0.35 inches |
| Package Weight | 0.01 Kilograms |
| Item Dimensions LxWxH | 0.65 x 0.65 x 0.35 inches |
| Item Weight | 0.01 Ounces |
| Brand Name | EXNAVI |
| Material | phenolic |
| Manufacturer | EXNAVI |
| Part Number | EX-2021CA1 |
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