PROX

PROX 99101-357 Keihin Hex Main Jet 148

Precision Fueling: Pro X Keihin Hex Main Jet The Pro X 99101-357 Series Keihin Hex Main Jet is a high-quality aftermarket jet designed for Keihin carburetors. Engineered for precision and reliability, this jet ensures optimal fuel delivery for enhanced engine performance. Perfect for motorcycle e...

$16.95*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

Precision Fueling: Pro X Keihin Hex Main Jet

The Pro X 99101-357 Series Keihin Hex Main Jet is a high-quality aftermarket jet designed for Keihin carburetors. Engineered for precision and reliability, this jet ensures optimal fuel delivery for enhanced engine performance. Perfect for motorcycle enthusiasts and professional mechanics alike, this jet provides consistent and dependable fueling.

Key Features:

  • High-quality aftermarket jet
  • Designed for Keihin carburetors
  • Ensures optimal fuel delivery

Detailed Specifications:

  • Brand: PROX
  • Model: 99101-357
  • Type: Keihin Hex Main Jet

Key Features

This product cannot be sold to residents in the state of California.

High quality aftermarket jets for Keihin carburetors.

Specifications

Brand
PROX
Product Type
Keihin Hex Main Jet
Jet Size
148

Pros & Cons

👍 Pros

  • Manufactured by PROX, known for producing high-quality aftermarket parts for powersports applications
  • Specifically designed as a Keihin Hex Main Jet 148, ensuring precise fit and function for compatible carburetors
  • Offers an exact replacement or tuning option for Keihin carburetors, aiding in engine performance optimization
  • As an aftermarket jet, it provides an alternative to original equipment manufacturer (OEM) parts, potentially at a different value
  • Useful for fine-tuning fuel mixtures in carburetors, which can impact engine response and efficiency

👎 Cons

  • This product cannot be sold to residents in the state of California, limiting its availability for some customers
  • As a carburetor jet, its installation requires mechanical knowledge and tools, not suitable for all users
  • Only compatible with Keihin carburetors, meaning it is not universally applicable to other carburetor brands
  • A main jet is a single component, and adjusting it often requires diagnostic expertise to achieve optimal engine tuning
  • Specific details on the materials or manufacturing process that differentiate it from other jets are not provided

Frequently Asked Questions

This PROX Keihin Hex Main Jet is a size 148.
This main jet is specifically designed for Keihin carburetors.
No, this product cannot be sold to residents in the state of California.
No, it is described as a high quality aftermarket jet for Keihin carburetors.
A main jet controls the fuel flow at mid-to-high RPMs in a carburetor, crucial for engine performance tuning.