Product Description
The Genuine Front Master Cylinder (1100684/B) is the official replacement unit for Royal Enfield’s 350cc J-Series motorcycles. This complete assembly is designed to provide a consistent and firm lever feel, matching the original factory calibration for bore size and internal seal performance. The black-coated finish is specifically matched to the styling of modern trims like the Hunter 350 Dapper or the Meteor 350.
Key Features:
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J-Series Optimized: Engineered specifically for the hydraulic requirements of the 350cc J-platform braking system.
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Complete Assembly: Includes the master cylinder body, integrated fluid reservoir with sight glass, reservoir cap, and internal piston/seal kit.
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Precise Brake Control: Restores the original factory “bite” and modulation, eliminating the spongy feel caused by worn or leaking internal seals.
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OEM Build Quality: Manufactured to strict factory tolerances, ensuring high resistance to weather, heat, and vibration.
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Integrated Sight Glass: Features a transparent window for quick, easy monitoring of DOT 4 brake fluid levels.
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Plug-and-Play Fitment: Designed as a direct bolt-on for standard 22mm (7/8″) handlebars with a standard 10mm banjo bolt connection.
Product Specifications:
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Brand: Royal Enfield
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Part Number: 1100684/B
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Finish: Matte/Gloss Black
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Fluid Type: DOT 4 (as specified on the reservoir cap)
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Bore Size: Approximately 14mm
Vehicle Compatibility:
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Royal Enfield Classic 350 (Reborn) (2021–2026+)
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Royal Enfield Meteor 350 (All Variants: Fireball, Stellar, Supernova)
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Royal Enfield Hunter 350 (Dapper and Rebel Trims)
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Royal Enfield Bullet 350 (New Gen) (2023+ J-Series Models)











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