Your cart is empty
Start ShoppingMIKUNI FBN34/100 Carburetor Damper Diaphragm - 34mm Rubber NBR for Fuel System Efficiency
Fits your
May not fit your
Description
Upgrade your carburetor's fuel delivery system with the MIKUNI FBN34/100 Damper Diaphragm. This high-performance rubber component ensures precise fuel metering, enhancing engine efficiency and power output for powersports applications.
Key Features
- Material: Nitrile Butadiene Rubber (NBR) for exceptional resistance to fuel, oil, and heat
- Dimensions: 34mm diameter for precise fitment in MIKUNI carburetor systems
- Weight: Lightweight 0.5 oz (14g) design for improved throttle response
- Compatibility: Direct replacement for MIKUNI carburetor damper systems
Why Choose This Product
Engineers design this diaphragm for maximum durability and consistent performance under demanding conditions. The NBR material withstands fuel and heat exposure, preventing degradation and maintaining sealing integrity. Its exact 34mm sizing ensures a perfect fit, eliminating leaks and optimizing fuel-air mixture. Riders benefit from smoother throttle control, enhanced power delivery, and reduced maintenance needs. Whether you're modifying a classic motorcycle or tuning a modern off-road vehicle, this diaphragm delivers reliable performance when it matters most.
Delivery
Checking availability...
Estimated arrival
Order within to ship today
Orders ship
Shipping to
Enter your ZIP code for delivery estimate
Price Match Guarantee
Found it cheaper?
Log in to submit a price match request.
Price
Quantity
Free Shipping $100+
14-Day Returns
Secure Checkout
Price Match
Complete the Build
This item
$5.13
In Cart
Upgrade your carburetor's fuel delivery system with the MIKUNI FBN34/100 Damper Diaphragm. This high-performance rubber component ensures precise fuel metering, enhancing engine efficiency and power output for powersports applications.
Key Features
- Material: Nitrile Butadiene Rubber (NBR) for exceptional resistance to fuel, oil, and heat
- Dimensions: 34mm diameter for precise fitment in MIKUNI carburetor systems
- Weight: Lightweight 0.5 oz (14g) design for improved throttle response
- Compatibility: Direct replacement for MIKUNI carburetor damper systems
Why Choose This Product
Engineers design this diaphragm for maximum durability and consistent performance under demanding conditions. The NBR material withstands fuel and heat exposure, preventing degradation and maintaining sealing integrity. Its exact 34mm sizing ensures a perfect fit, eliminating leaks and optimizing fuel-air mixture. Riders benefit from smoother throttle control, enhanced power delivery, and reduced maintenance needs. Whether you're modifying a classic motorcycle or tuning a modern off-road vehicle, this diaphragm delivers reliable performance when it matters most.| SKU | GM2AB1E32E |
|---|---|
| MPN | FBN34/100 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
0.0
0 reviews
0
Log in to write a review.
Reviews
No reviews yet. Be the first to review this product!
Featured Review
| Make | Model | Years |
|---|---|---|
| Suzuki | DR-Z400, RM250, RMZ250, RMZ450 | 1980-2005 |
| Kawasaki | KX250, KX450 | 1990-2010 |
| Yamaha | YZ250, YZ125 | 1985-2000 |
| Honda | CR250, CRF250R | 1995-2015 |
Frequently Asked Questions
FBN34/100 fits Mikuni BS34 and BS36 carburetors commonly found on Suzuki DR-Z400, Kawasaki KX models, and various 2-stroke/YZ/CR bikes from 1980-2010. Measure your carb slide diameter (34mm).
Symptoms include hanging throttle, sluggish return to idle, or bogging on deceleration. Remove carb slide - if diaphragm is torn, hardened, or sticky, it needs replacement.
Yes, FBN34/100 is an OEM Mikuni part number manufactured by Mikuni for their carburetors.
No, the damper diaphragm can be replaced individually. However, inspect gaskets, needle, and slide condition while carb is apart.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- Phillips screwdriver
- small flathead screwdriver
- needle nose pliers
Pro Tips
- Use carb cleaner to clean slide bore before installing new diaphragm
- Lubricate diaphragm with light oil during installation
- Inspect slide for wear while diaphragm is out
Common Mistakes to Avoid
- Damaging diaphragm during removal
- Not cleaning carburetor bore thoroughly
- Incorrect diaphragm orientation
Comparison vs Stock/OEM
This is the genuine OEM Mikuni replacement part
Improvements
- Exact factory specification
- Restores proper throttle response
- Prevents lean bogging on deceleration
Considerations
- None - identical to original equipment
Durability & Warranty
Expected Lifespan
2-5 years typical (20-50 hours riding)
Warranty
1 year Mikuni manufacturer warranty
Maintenance
Inspect annually or every 20 hours. Replace if hardened/cracked. Clean carb regularly to prevent fuel contamination.
What Others Are Saying
Reviews from across the web
