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【4-Piston Brake】 2025 Upgrade Zoom Hydraulic Disc Brake Set Features with a 4-piston pistons, which makes the dual-side breaking force evenly and also increase the breaking force by 30% and the pads by 150%.

【4-Piston Brake】 2025 Upgrade Zoom Hydraulic Disc Brake Set Features with a 4-piston pistons, which makes the dual-side breaking force evenly and also increase the breaking force by 30% and the pads by 150%.