Prokomon Motorcycle Carburetor Synchronizer Tool — 4-Gauge Vacuum Balancer for 2- & 4-Cylinder Bikes, Damping Control

This handheld vacuum sync set is built to let mechanics and home tuners quickly identify and correct uneven carburetor performance. The kit bundles four precision gauges with damping control, hoses, brass extensions and connectors so you can measure each intake throat individually or balance them together. Designed for motorcycles and small engines with two or four carburetors, the Prokomon tool speeds troubleshooting of timing, valve and mixture-related symptoms without complex engine teardown.

How will this tool help me diagnose carburetor problems?

The Prokomon synchronizer converts intake vacuum into readable gauge movement so you can spot cylinders that are out of sync. It highlights differences caused by incorrect timing, leaking manifolds, stuck valves or mismatched fuel mixtures so you can narrow down the root cause quickly.

• Four gauges let you compare all cylinders simultaneously for 4-cylinder engines or use pairs for two-cylinder bikes.
• Damping control on each gauge reduces needle flutter for steady readings.
• Precision calibration enables accurate comparisons between ports.
• Includes eight hoses and brass extensions to reach common carb and intake fittings.

What comes in the Prokomon carb synchronizer kit and how do I set it up?

The kit arrives with everything needed to connect to carburetor vacuum ports and begin measurements immediately. Setup is straightforward: attach the threaded brass extensions to the carb ports, connect hoses to the gauges, and use the four-way connectors if you want to balance multiple cylinders together.

• One four-gauge vacuum balancer with calibration and damping controls.
• Eight vacuum hoses and four connectors for flexible routing and combining readings.
• Eight threaded brass carburetor extensions to suit common port threads.
• Small screwdriver for zeroing and minor adjustments on the gauge faces.

Can I use this on both two- and four-cylinder motorcycles?

Yes — the Prokomon unit is configured to support either engine layout. Use two gauges for twin engines or all four gauges for four-cylinder bikes; connectors allow pairing or single-gauge operation depending on your procedure.

• 2-cylinder: use two gauges for left/right bank comparison or pair gauges for parallel checks.
• 4-cylinder: monitor all intake throats at once to achieve balanced vacuum across the engine.
• Flexible hose lengths and brass fittings adapt to tight engine bays.
• Useful for inline-fours, parallel twins, and many classic motorcycle setups.

Who is this for? The Prokomon carburetor synchronizer is aimed at motorcycle owners, independent mechanics and DIY tuners who want a reliable, low-cost way to diagnose and balance carburetors and intake systems. It’s particularly helpful for riders maintaining carbureted classic bikes, small displacement sport or cruiser engines, and anyone wanting more consistent idle and throttle response without professional shop visits. Note: gauges are mechanical and may require a small zeroing adjustment out of the box; follow the included instructions and use the screwdriver for calibration if the needle is not at zero.