Drive with the confidence that modern braking technology provides. Our complete Dual Circuit Master Cylinder Conversion Kit replaces outdated single-circuit systems, eliminating the single point of failure that can lead to a total brake loss. This is an essential upgrade for any 550 Spyder recreation driven on modern roads.
This comprehensive kit is centered around a reliable VW Type 3 / Super Beetle Dual Circuit Master Cylinder. Our kit includes everything you need for a clean and complete installation, from the correct dual-circuit reservoir, all necessary hoses, and brake light switch.
Kit Includes:
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Dual Circuit Master Cylinder
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Dual Circuit Brake Fluid Reservoir with Cap
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Integrated Brake Light Switch
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4ft Brake Fluid Hose
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M10 Plug
Step 1: Find Your Two Points
Look under your car and find these two spots:
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The Front Axle Beams
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The Mounting Wall - the flat surface where your master cylinder will be installed
(Look at the picture below to see exactly what to measure!)

Step 2: Measure the Distance
Measure the straight-line distance between the axle tubes and the mounting wall. This is your "A" measurement!
Step 3: Pick Your Part
Now match your measurement to the right part:
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If you measured 6 inches → You need SKU: BMCK1 / Part #: 19MC
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If you measured 7 inches or more → You need SKU: BMCK2 / Part #: 20MC
SKU:




