Review on 🏍️ ALPHA MOTO Motorcycle Vacuum Carburetor Synchronizer Carb Sync Gauge | Honda Suzuki Kawasaki Yamaha CB KZ GS XS 550 650 750 850 900 | Video Demo | Made in Taiwan by Mike Gruwell

they have proven themselves. My only complaint is that the last time I used my kit, the threaded part that screws into the block came loose from the tube that you connect the rubber hose to. I just applied schnitzel gel to it and twisted the 2 parts together. that should be the solution. I would recommend that you do not over tighten the steel tubing in the block. That's what I did and why they went their separate ways. The 4 gauges work very well and have adjustments to keep the needles steady when the engine is running.