Product Description
Choose the MOTION PRO TOOL MERC FREE CARB SYNC from Knobtown Cycle, Kansas City’s go-to shop for motorcycle parts.
Key Features
- 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 40 cm Hg)
- Rugged, impact resistant ABS enclosure with convenient storage area for adapters
- Spill-proof design means the tool can be stored in a horizontal or vertical position
- For use with any two-, three- or four-cylinder four stroke motorcycles
- Includes hoses, 5 mm adapters, in-line restrictors and instructions
- 5 mm adapters are used on many Honda and Suzuki models
- Includes hang hook to clip onto the handlebars for easy use
- Rubber feet on enclosure bottom helps prevent sliding
- Easy to read scale for precise synchronization
- Unaffected by ambient pressure changes
- Mercury-free design
- For use on many Honda and Suzuki models, most Kawasaki models do not need adapters.
Product Specifications
- Part Number: 38040003
- Brand: MOTION PRO
- Weight: 1.60 lbs
Available at Knobtown Cycle
Shop online or visit our Kansas City showroom. Fast shipping available on all orders! Free Ship to Store!
Part Locations
| Location |
Available |
| Wisconsin (WI) |
20+ |
| New York (NY) |
20+ |
| Texas (TX) |
1 |
| Nevada (NV) |
3 |
| North Carolina (NC) |
9 |
| National Total |
20+ |
Stock levels last updated: January 30, 2026 8:09 PM
Professional Installation Available
Knobtown Cycle offers professional installation services. Contact us via a service request to learn more.
Thank you for Shopping at Knobtown Cycle!
When you shop with us, you’re not just buying motorcycle parts — you’re supporting a small, family-run business rooted right here in the heartland of America. Every order helps us keep riders on the road and fuels our passion for serving the motorcycle community.
From all of us at Knobtown Cycle, thank you for choosing local and riding with us.
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