Universal Motorcycle Vacuum Carburetor Synchronizer Synchronization Balancer Carb Sync Balancing Gauge Compatible with Honda Yamaha Kawasaki Suzuki GS KZ XS CB 550 650 750 850 900 BMW

Yamaha boat worked as advertised

Went into this reading the reviews and assuming like many things that with a bit of care it would probably be alright. Carefully Loctited in metering jets, gently adjusted gauges so they were synced, then tried to use it on my good running 2014 FJR1300 motorcycle to dial in the throttle bodies as part of a normal service. Nope, it is complete and utter junk. Needles nowhere near each other and bouncing all over. Even when you switch the lines the needles don't change general area but remain wildly uncalibrated. . This thing is total garbage and sadly I didn't get a chance to test it until after the return window closed, so I am out the cost of this useless paper weight. Might be ok for some sort of steampunk cosplay, definitely of no use at all for any mechanical purpose.

Upon having trouble with my gauges the company reached out to me. They took care of the problem quickly and cheerfully. I would recommend them for use in the future. These were a great buy for the money.

Works as it should, only needed two gauges due to having two carbs. Unfortunately one of them did not work the greatest but was able to get the job done.

Good tool - worked very well.

We've never met but I know you. Yes, you. It's probably not your day job, but you're a decent DIY mechanic. "mechanically inclined" as they say. You just serviced the carbs on your 4 cylinder motorcycle. Might be a Magna, might be a KZ1000. Maybe an R1. You did it by the book. You cleaned everything, replaced all wear items. You torqued to spec. You know that one of the last steps after reinstalling your carbs is to sync them, so now you're shopping for a carb sync set, and you just came across this one.The user reviews don't paint a rosy picture, but it's one of the cheapest after all. The reviews say the gauges 1. Aren't zeroed to the same place out of the box, and2. They go all catawampus and are impossible to read as soon as the engine is started.Well, you take internet reviews with a grain of salt. Some people have had success with this particular product after all. And it's not like you have to sync carburetors very often. Maybe once every several years. At that price point, it's worth the risk.It's not.It's all true.I was able to get the needles to stay readable by clamping the tubes with a parallel-jaw wood clamp just enough to dampen the bouncing. It doesn't really matter though, because the gauges aren't zeroed, so who knows what the readings mean.Or buy them anyway. I mean, what's the worst that could happen? You got this. YOLO.

Guages are trash, when's for 30 seconds before breaking. Nice vacuum line and bracket though. I would never buy from this company again

Gauges bounce even with the plastic dampening valves that come in the kit. One gauge lost calibration after use and no longer sits a “0”. Very difficult to use. I recommend buying a more expensive reliable set.