SHIMANO GRX 1700mm Left rear oil filling set JKIT oil hose connected to caliper side ST-RX815L/BR-RX810R JKIT/Lever, caliper, hose, filled,

ST-RX815L/BR-RX810R 1700mm Left rear ST-RX815-L Shimano GRX - DI2 - Hydraulic disc brake - Dual control lever - 2x11 speed Improved grip performance on rough roads and descents Warpage to prevent slipping and slipping when gripping Upright bracket head shape Bracket shape to prevent upward slippage Anti-slip bracket texture and brake lever coating Improved braking efficiency reduces fatigue during long rides Improved braking input performance Brake lever axis higher than before and brake lever shape that fits comfortably in your hand BR-RX810-R No hesitation on rough roads Excellent heat dissipation function Ice Technology Flat Mount Designed for ease of assembly and maintenance Excellent tool access Easy hose joint system (J-Kit) Simple wheel changes Clean bleeding system One-way bleeding