Your cart is empty
Start ShoppingMIKUNI Large Round Main Jet 87.5 - High-Performance Brass Jet for Powersports Engines
Fits your
May not fit your
Description
Upgrade your powersports engine's fuel delivery system with the MIKUNI Large Round Main Jet 87.5. This precision-crafted brass jet delivers consistent fuel flow for enhanced performance, responsiveness, and reliable operation in high-demand applications.
Key Features
- 87.5 Orifice Size: Optimized fuel flow for balanced engine performance and efficient combustion.
- Brass Construction: Durable, corrosion-resistant material ensures long-lasting reliability in harsh environments.
- Clip-On Design: 0.217" orifice diameter simplifies installation and adjustment for quick tuning.
- Lightweight Build: Minimal weight (0.01 lbs) reduces strain on engine components without compromising performance.
Why Choose This Product
Engineers and riders rely on MIKUNI jets for their precision engineering and compatibility with a wide range of powersports engines. This Large Round Main Jet offers superior fuel metering for improved throttle response, consistent power delivery, and smoother engine operation. The brass material resists wear and corrosion, while the clip-on style makes it easy to install or replace during maintenance. Whether you're tuning a motorcycle, ATV, or off-road vehicle, this jet ensures reliable performance under demanding conditions.
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
$19.80
In Cart
Upgrade your powersports engine's fuel delivery system with the MIKUNI Large Round Main Jet 87.5. This precision-crafted brass jet delivers consistent fuel flow for enhanced performance, responsiveness, and reliable operation in high-demand applications.
Key Features
- 87.5 Orifice Size: Optimized fuel flow for balanced engine performance and efficient combustion.
- Brass Construction: Durable, corrosion-resistant material ensures long-lasting reliability in harsh environments.
- Clip-On Design: 0.217" orifice diameter simplifies installation and adjustment for quick tuning.
- Lightweight Build: Minimal weight (0.01 lbs) reduces strain on engine components without compromising performance.
Why Choose This Product
Engineers and riders rely on MIKUNI jets for their precision engineering and compatibility with a wide range of powersports engines. This Large Round Main Jet offers superior fuel metering for improved throttle response, consistent power delivery, and smoother engine operation. The brass material resists wear and corrosion, while the clip-on style makes it easy to install or replace during maintenance. Whether you're tuning a motorcycle, ATV, or off-road vehicle, this jet ensures reliable performance under demanding conditions.
| SKU | GM08B8CC76 |
|---|---|
| MPN | FN100604-87.5 |
| Brand | MIKUNI |
| Category | Jets |
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 |
|---|---|---|
| Various Japanese | Keihin/PVM carbureted motorcycles, ATVs | 1980-2025 |
| Honda | XR series, TRX ATVs | 1990-2010 |
| Yamaha | PW/TT-R/WR dirt bikes | 1985-2020 |
Frequently Asked Questions
Fits Mikuni TM24, TM34, TM38, TM40, TM42, PVM series large round main jets. Confirm your carb model.
Use a jet kit or dyno tune; common for mid-range on stock 250-450cc bikes at sea level.
Yes, large round (FN series) for PVM/TM carbs; small round (VM series) for round-slide carbs.
Yes, if equipped with compatible Mikuni carb like Honda TRX or Yamaha Banshee.
Installation Guide
Difficulty
Easy
Est. Time
5 min
Tools Required
- Small flathead screwdriver
- Jet needle holder (optional)
Pro Tips
- Remove float bowl fully, clean jet and needle thoroughly. Test plug chop after install to verify fueling
Common Mistakes to Avoid
- Not cleaning carb passages before install
- Incorrect jet size selection causing lean/rich conditions
Comparison vs Stock/OEM
Direct OEM replacement or upgrade for Keihin/Mikuni factory carbs
Improvements
- Precision machined for consistent flow
- Better corrosion resistance
- Easier tuning increments
Considerations
- Precise sizing required; stock may be smaller/larger
Durability & Warranty
Expected Lifespan
Indefinite with proper cleaning (carb lifespan)
Warranty
Limited lifetime (Mikuni standard)
Maintenance
Clean with carb cleaner every service; inspect for wear/clogging
What Others Are Saying
Reviews from across the web
