Knobtown Cycle proudly offers the MIKUNI CARBS RS38 4CYL SET. Your Kansas City motorcycle parts experts for over 40 years.
Product Description
CARBS RS38 4CYL SET
- Designed for inline four-cylinder performance to offer higher horsepower gains with the world's top motorcycle road race and drag race teams
- Offer smooth, controllable throttle response with precise fuel-metering demands with high-volume fuel/air required by race engines
- Flat throttle valve design provides the strongest signal for precise and instantaneous throttle response
- Accelerator pump spray nozzle shoots fuel directly into the intake tract for immediate engine response
- Check carb spacing to verify fitments; use spacing chart on how to check spacing
- Float bowl vent allows atmospheric pressure into float bowl for fuel flow
- Include adjustable accelerator pump and adjustable idle screw
- Adjustable throttle return spring allows spring return pressure
- Includes enrichment starter system for easier cold starting
- Jet needle has easy adjustment slots for quick tuning
- Use Genuine Mikuni jets and parts for best results
- Made in Japan
- Jetting may need to be changed per application, see chart for included jetting.
- Larger-diameter spigot O.D.'s may require different mounting flanges.
Part Locations
| Location |
Available |
| Wisconsin (WI) |
2 |
| New York (NY) |
0 |
| Texas (TX) |
0 |
| Nevada (NV) |
0 |
| North Carolina (NC) |
0 |
| National Total |
2 |
Stock levels last updated: December 23, 2025 12:38 AM
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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