Having your thumb brake or finger brake installed in conjunction with your rear master cylinder has never been easier!⁠
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The tear drop junction valve replaces the Plastic tube adapter (Pictured) on the rear master cylinder.

Once installed the junction valve is a threaded M10x1.00 inlet ready to feed the Thumbrake direct. The junction valve is a through port allowing a dual operation setup..

The tear drop type is for brembo and nissin type masters with the plastic tube mount type with bolt shaped as a tear drop as pictured

RTX452 is a Teardrop shape with a M4 bolt this is used in some Brembo, Nissin and aftermarket master cylinders

Note: Image depicts Silver however this item is Black