
PROX 99101-357 Keihin Hex Main Jet 155
Precision Fuel Delivery for Optimal PerformanceThe Pro X 99101-357 Series Keihin Hex Main Jet is designed to provide precise fuel delivery for Keihin carburetors. Compatible with Beta 400 RR models from 2005-2014 and other machines, this high-quality aftermarket jet ensures optimal engine perform...
*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.
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Overview
Precision Fuel Delivery for Optimal Performance
The Pro X 99101-357 Series Keihin Hex Main Jet is designed to provide precise fuel delivery for Keihin carburetors. Compatible with Beta 400 RR models from 2005-2014 and other machines, this high-quality aftermarket jet ensures optimal engine performance and throttle response.
Specifications:
- Style: 99101-357
- Size: 155
- Carburetor Compatibility: Keihin
Key Features
This product cannot be sold to residents in the state of California.
High quality aftermarket jets for Keihin carburetors.
Specifications
Pros & Cons
👍 Pros
- This PROX Keihin Hex Main Jet 155 is a high-quality aftermarket component for compatible carburetors.
- Designed for Keihin carburetors, it provides a specific and necessary replacement part.
- The jet is engineered to precise specifications, ensuring proper fuel delivery for engine tuning.
👎 Cons
- This product cannot be sold to residents in the state of California, limiting its availability.
- The "155" sizing indicates a specific tuning requirement, making it unsuitable for general purpose use without knowing the correct application.
- Installation requires knowledge of carburetor tuning and mechanics, which may not be suitable for all users.