YCF Size 35 Slow Jet for Nibbi Carburetors on Select YCF Dirt Bikes (2024-2025)
Size 35 slow jet designed for Nibbi carburetors on select YCF dirt bikes from 2024–2025. Compatible with both PE and PWK main jets for reliable, low-speed fuel control.
| Brand: YCF |
| Color: Gold |
| Hardparts: YCF |
Internal Reference:
YCF-LK-FLK-35
Product Information
Fine-tune your dirt bike’s performance with this YCF Size 35 Slow Jet made for Nibbi Carburetors. This slow-jet is designed for riders who demand smooth throttle response and reliable low-speed fueling, this precision-machined brass jet fits select YCF dirt bikes equipped with Nibbi carburetors (2024-2025).
This size 35 slow jet, also known as a pilot jet, controls the fuel mixture at idle and low-throttle openings, ensuring crisp response and stable engine performance. Manufactured to Nibbi specifications, it delivers consistent flow characteristics that help prevent bogging, hesitation, or stalling in off-idle conditions.
This jet is compatible with Nibbi carburetors that use PE and PWK main jets, allowing versatile fitment across YCF bike models. Whether you’re replacing a worn jet or dialing in your fuel system after altitude or exhaust changes, this slow jet provides the accuracy and quality your bike deserves.
Features & Benefits
- Size 35 jet for stable idle and smooth low-throttle control
- Compatible with both PE and PWK main jets for versatile tuning options
- Precision-machined brass ensures consistent fuel flow
- Designed to improve throttle response and prevent lean hesitation
- Reliable for performance for track, trail, and everyday riding
- Durable finish provides corrosion resistance from fuel exposure
What's Included
- (1) YCF Size 35 Slow Jet for Nibbi Carburetors on Select YCF Dirt Bikes (2024-2025)
Fitment
- START 125SE (2024–2025)
- START 125S (2024)
- START 125 (2024–2025)
- PILOT 125 (2024–2025)
- PILOT 150E (2024–2025)
- FACTORY SP2 150 (2024–2025)
- BIGY 125 (2024–2025)
- BIGY 150 (2024–2025)
- BIGY 150E FACTORY (2024)
- BIGY 150E FACTORY XL (2024–2025)
- LITE 125 (2024–2025)
- SM 125 (2024–2025)
- SM 155 (2024–2025)
- SUNDAY S124E (2025)
- SUNDAY S147E (2025)
- GP 107A (2024)
- GP 157 (2025)
Specifications
- Material: Brass
- Function: Controls fuel & air mixture while engine is idling
- Dimensions: M6 x 0.75mm thread size, 1" (28mm) length, 5mm head diameter
- Application: MX, enduro, track, trial, pit bike
FAQ - Common Buyer Questions
Q: What does a "slow jet" do in a carburetor?
A: The slow (pilot) jet controls fuel delivery at idle and low throttle openings, crucial for maintaining smooth idle, clean starts, and steady low-speed response.
Q: Do I need to re-tune my carburetor after installation?
A: Minor fuel-screw or idle-speed adjustments may be needed to optimize your bike's performance, depending o conditions such as temperature, altitude, and exhaust setup.
Q: Can I use this jet for racing or recreational riding?
A: Absolutely. The precise metering supports consistent throttle response for both competition and everyday use.
