Tektro Gemini HD-M520 Hydraulic Disc Brake Set - Black - Choose Hose Length
Tektro Gemini HD-M520 Hydraulic Disc Brake Set. What is a a J-Kit?. The system is already bled and does not need to a re-bleed once fitted to your bike - so long as the hose is not cut. Open hydraulic system for consistent performance.