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MASTER-CYLINDER BRAKE 1/2" MIRROR M
MC1R Master Cylinder 1/2" Bore R/H Mirror Thread Yamaha Style
The MC1R Master Cylinder is a high-quality aftermarket front brake master cylinder in classic Yamaha style, specifically designed with a right-hand (R/H) mirror thread. With a 1/2" bore, it delivers precise and reliable braking performance for dirt bikes and motocross applications.
Specifications
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Bore size: 1/2"
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Total length: 240mm
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Right-hand (R/H) mirror thread
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Early Yamaha style design
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Compatible replacement lever: LBY7
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Fits 7/8" (22.5mm) handlebars
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Suitable for single-disc applications
Features
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Aftermarket replacement for front brake systems
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Yamaha-style design for vintage and modern motorcycles
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Can accommodate a brake light switch
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Durable construction for consistent braking performance
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Easy installation on standard handlebars
Ideal For
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Motocross and dirt bike riders
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Riders replacing or upgrading Yamaha-style front brake systems
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Single-disc braking system applications
Durable, precise, and easy to install the MC1R Master Cylinder provides reliable control and performance for Yamaha-style single-disc front brake setups on dirt bikes and motocross motorcycles.



















