YOUNGLMotorcycle Vacuum Carburetor Synchronizer, Carburetor Synchronizer Stabilizer, Universal Motorcycle Synchronization Balancer Carb Sync Balancing Gauge Kit

goood

Used it it was widely out of calibration. The carbs had been synchronized 2years ago so when I started the bike they should have been close to eachother, however they where split bad. As I made adjustments the bike ran worse. I used a friend set of gauges and brought it right in.

Had to open one up to calibrate it to match the other 3.

I had to set it 3 tines. Then the hose started breaking on me. Don't buy you'll be so aggravated trying to use it.

Great kit , only one small problem, came with 2 x5mm connecters and 2 x6 mm connecters , need 4 for any 4 cyl motorcycle of the same size, will have to buy a set of 5mm and 6mm to be able to work , thanks as it was the cheapest kit

The tubing was very pour quality. After attaching to the manometer, I pull the tubing back off and it immediately snapped. And then connected a piece to my motorcycle to do the testing. The bike was on for roughly 60 to 90 seconds. The tubing had melted on one side, the other side broke when taking it off the carburetor. I was not able to complete the calibration and will have to find suitable replacement tubing.

Item doesn't calibrate properly wouldn't recommend item worst item purchased ever would rate them zero stars but won't let me

Only comes with 2 of each size adapter. To use all 4 gauges, I would have to buy a separate set of adapters. Thought I was missing something, but apparently that’s what I’m supposed to do.

This unit has 2 each 5mm and 2 each 6mm adapters, therefore you cannot sync a 4 carb system as you need 4 adapters with the same thread size to do a 4 carb system. The additional adapters are 30 to 40 bucks if purchased separately. Please DO NOT PURCHASE THIS, go and find one with a case and all the adapters, cheaper in the end, and easier to store. Cannot comment on quality as it's unusable without the extra adapters.Update used twice now the gauges are buggered no adjust and way off I mean like half the dial off unusable, synced 2 motorcycled before they gave up and now too late to return, would not recommend this item. Also the hose are pathetic they collapse and break as soon as they get any heat into them at all.