SyncPro™ Carb Tuner

  • Precise four channel vacuum indicator designed specifically for intake synchronization of engines with multiple carburetors or throttle bodies (maximum vacuum rating for this tool is 40cm Hg)
  • Mercury-free design
  • For use with any 2, 3 or 4 cylinder four stroke motorcycles
  • Spill proof design allows tool to be stored in a horizontal or vertical position
  • Easy to read scale for precise synchronization
  • Unaffected by ambient pressure changes
  • Includes hang hook to clip onto the handlebars for easy use
  • Rugged, impact resistant ABS enclosure with convenient storage area for adapters
  • Rubber feet on enclosure bottom helps prevent sliding
  • Includes hoses, 5mm adapters, in-line restrictors and instructions
  • 5mm adapters are used on many Honda and Suzuki models
  • Optional 6mm adapters are available for use on most Yamaha models
  • Most Kawasaki models do not need adapters
  • Patented design
  • Accessories: 08-0168 6mm short adapters(set of 4); 08-0013 5mm brass adapters(set of 4); 08-0040 6mm brass adapters Yamaha (set of 4); 08-0014 replacement hose set, 08-0426 Restrictor Jet (set of 4)

Part No. 08-0411


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Replacement Products

SyncPRO™ manometer fluid cannot replace mercury
and vice-versa

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For further information, go to

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Customer Reviews

Works perfectly
I used the Motion Pro carb synch on my throttle bodies in my 2007 Yamaha FZ6. The tool works perfectly. I don't know how another poster got bubbles---you don't want to rev too much and suck the fluid out. Maybe that was the problem? No adaptors were needed for my application. Once you have done it, it's about a 1/2 hour operation. You should calibrate the tool (5-10 mins) the first time (instructions printed on backside on tool)
by Staacy on October 8, 2008

rid your gauge of air bubbles
Hi.. I too have a Motion Pro manometer (an Hg type) and have experienced these little bubbles. .they're either air or suspended gasoline that condense from vapor introduction. purge the tubes with air until the fluid and air bubbles are gone from the metering tubes. this is basically like resetting them. they'll never migrate out of the tubes due to specific gravity and surface tension, but will once moved to the fluid tank. whether you chose to blow into the rubber line or use a VERY low (in both pressure and flow) compressed air burst, is up to you.
by Jim on November 16, 2008

Carb Tuner
Greetings. I ride my bike very day. I choose not to own a car anymore. That's my wife's baby. Now I've rebuilt and balanced more car and bike engines than I can remember. My biggest problem was getting the carbs balanced properly. I seek perfection. My mates joke that I've got a sensitive arse that knows when a motor is out of sync. Naturally they bring their motors to me for servicing and balancing. I recently purchased your Sync Pro balancer for my 1250 ABS Bandit. Over 20 years I've used the vacuum guages, home made balancers and recently the Morgan Carbtune . Your balancer is by far the superior device. What makes your balancer the best is the fact that " you balance the balancer before use". I previously found my vacuum guages better than anything else because you could balance them first even though this is not in the instructions of that balancer. I would use the same procedure as yours using 3 t-pieces designed for aquarium air hoses. Your device is however far more sensitive and accurate and I am now riding a Bandit that's as smooth as a sewing machine. The power increase is immediately evident and the fuel comsumption drop is at least 15%. Well done gentle men!!! I'm the happiest biker on the planet!! PS. Include in your instructions that after the first balancing, the bike should be riden for +- one week, then re-balance the balancer and then immediately the bike. An unbalanced engine has uneven build-up of carbon residues which result in un-even compression. When the bike is balanced the carbons clear resulting again in minor imbalance. The rebalance after a week starts to set this right. Then do it again a month later and you have a perfectly functioning machine. Keep it up Gents!!! Regards from me in Australia. You can quote me!!
by on January 7, 2010

syncpro carb tuner
great tool did good job helping me get my old z1 & kzs running good again
on March 13, 2019

Awsome tool
This is an awesome tool and a must have for any one who loves to work on motorcycles.
on June 21, 2019

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