1. Carburetors & Throttlebodies ATV For Sale
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  3. RACE DRIVEN S-46104

RACE-DRIVEN S-46104 Carb Carburetor Repair Kit 191916001752

fits model: 500, 4x4, Scrambler. make: Polaris. year: 2003–2009.

S-46104 Race-driven Carb Kit For Polaris Scrambler 500 4x4 2003 - 2009 Carburetor Repair

( Brand: Race-driven ), ( Manufacturer Part Number: S-46104 ), ( Type: Carb Kits ), ( UPC: 191916001752 )

Review RACE DRIVEN Carb Kit Polaris Carburetor Repair fits SCRAMBLER 500 4X4 2003–2009

The **Race-Driven S-46104 Carb Kit** is a meticulously engineered, high-performance upgrade designed specifically for the **Polaris Scrambler 500 4x4 (2003 2009)** engines, delivering a precision-tuned solution for those seeking maximum power, reliability, and throttle response. This kit is crafted to address the demands of aggressive riding, off-road domination, and track performance, ensuring your Scrambler not only revs higher but also runs cleaner and more efficiently under extreme conditions. At its core, the S-46104 kit replaces the stock carburetor components with a set of **aftermarket, high-flow parts** that include a **new carburetor body, jets, needles, gaskets, and a precision-machined throttle body**, all designed to optimize fuel delivery and air intake for peak engine performance. The kit features **larger, more efficient jets** that enhance fuel atomization, reducing vapor lock and improving cold starts while preventing rich-running issues that plague stock setups. The **upgraded needles** are engineered for smoother, more responsive throttle action, eliminating the sluggishness often associated with stock carburetors under heavy load, whether you're tearing up trails, hitting the dunes, or pushing the limits on the track. Complementing these components is a **high-quality gasket set**, ensuring a leak-free seal that maintains vacuum integrity and prevents fuel leaks critical for both performance and longevity. The **throttle body** in this kit is machined for optimal airflow, reducing backpressure and allowing the engine to breathe more freely, which translates to better torque and higher RPM stability. Whether you're running a **stock engine or a modified powerplant**, this carb kit is built to handle the stress of aggressive riding, offering a **durable, long-lasting solution** that outperforms OEM components in durability and responsiveness. Ideal for both **street-legal scramblers and full-off-road applications**, the S-46104 kit is a must-have for riders who refuse to compromise on power, reliability, or control. With its **easy installation** and **proven track record**, this kit is the ultimate choice for those looking to unlock the full potential of their Polaris Scrambler 500 4x4.

### Pros and Cons of Buying a Race-Driven S-46104 Carb Kit for a Polaris Scrambler 500 4x4 (2003 2009)

#### **Pros:**

1. **Performance Gains** The S-46104 carb kit is designed for higher performance, offering improved throttle response, better top-end power, and a more aggressive powerband. This can make the engine feel more responsive, especially in off-road or racing conditions where quick acceleration is beneficial.

2. **Durability and Reliability** Race-driven carb kits are built to withstand higher stress levels, including increased RPMs and heat. The materials and construction are often more robust than stock components, reducing the risk of premature wear or failure under heavy use.

3. **Tunability** The kit typically includes adjustable components (such as jets, needles, and pilot screws), allowing you to fine-tune the carburetor for specific conditions whether you re running stock fuel, premium fuel, or even aftermarket fuel blends. This flexibility can help optimize power output and fuel efficiency based on your riding style and terrain.

4. **Compatibility with Modifications** If you ve made other engine modifications (e.g., headers, exhaust, or camshaft upgrades), the S-46104 kit can better match the increased airflow and power demands of those changes. It s a more cohesive upgrade path than sticking with stock carbs.

5. **Enhanced Throttle Control** The kit often includes features like improved idle circuits or smoother acceleration, which can make the bike more manageable in aggressive riding scenarios. This is particularly useful for scramblers, where sudden power delivery is common.

6. **Long-Term Cost Savings** While the upfront cost is higher than stock parts, the improved reliability and performance can reduce the likelihood of costly engine damage from rich mixtures, detonation, or carburetor failure over time.

7. **Aesthetic and Custom Appeal** For riders who enjoy building or customizing their bikes, installing a race kit adds a performance-oriented aesthetic and can make the bike feel more "built" or "tuned."

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#### **Cons:**

1. **Higher Upfront Cost** Race carb kits are significantly more expensive than OEM or aftermarket replacement carbs. The S-46104 kit will likely cost several hundred dollars, depending on the brand and whether it includes additional components (e.g., gaskets, clamps, or tuning guides).

2. **Learning Curve** Tuning a race carb requires knowledge of carburetion principles, fuel-air ratios, and how adjustments affect performance. Misfires, rough idling, or poor acceleration can occur if the carb isn t properly set up, which may require multiple adjustments or even professional help.

3. **Fuel Requirements** Higher-performance carbs often demand higher-octane fuel (e.g., 91 or premium) to prevent detonation. If you re used to running regular fuel, switching to premium may increase operating costs, especially if you ride frequently.

4. **Potential for Over-Powering** If the rest of the drivetrain (clutch, transmission, or rear end) isn t upgraded to match the increased power, you may experience premature wear or reduced reliability. For example, a stock clutch might struggle with the extra torque from a tuned carb.

5. **Maintenance and Wear** Race carbs are built to handle more stress, but they still require regular maintenance, such as cleaning jets, checking for leaks, and ensuring proper needle valve alignment. Neglecting maintenance can lead to performance issues or failure.

6. **Legal and Insurance Considerations** In some regions, modified carburetion may violate emissions or noise regulations, especially if the bike is used on public trails or highways. Additionally, some insurance providers may not cover modified bikes in the event of an accident, so check your policy.

7. **Not Necessary for Casual Riding** If you primarily use your Scrambler for light off-roading or casual riding without aggressive power demands, the performance gains from a race carb kit may not be worth the cost and effort. Stock or lightly modified carbs might suffice for your needs.

8. **Potential for Backfiring or Exhaust Issues** A poorly tuned race carb can cause backfiring, especially if the exhaust system isn t compatible with the increased airflow. This may require additional modifications (e.g., a cat-back exhaust or muffler) to mitigate.

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### **Conclusion:**

The **Race-Driven S-46104 Carb Kit** is a significant upgrade for a Polaris Scrambler 500 4x4 (2003 2009) if you re looking to extract more power, improve throttle response, and future-proof your engine for other modifications. It s ideal for riders who:

- Plan to push the bike hard in racing, trail riding, or aggressive off-roading.

- Are willing to invest time in learning carburetion tuning.

- Have (or plan to upgrade) the drivetrain, exhaust, and fuel system to complement the increased power.

- Prefer a more "built" or performance-oriented bike over stock reliability.

However, it s **not the best choice** if:

- You primarily use the bike for casual riding or light trail work.

- You lack the knowledge or patience to tune the carb properly.

- You re on a tight budget or unwilling to invest in supporting modifications (e.g., fuel, exhaust, or drivetrain upgrades).

- Your local regulations restrict performance modifications.

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### **Recommendation:** 1. **If you re serious about performance:**

- Proceed with the S-46104 kit, but pair it with complementary upgrades like a **high-flow exhaust**, **clutch upgrade**, and **premium fuel**. Consider consulting a local Polaris mechanic or carb specialist for tuning assistance.

- Start with a **basic tuning guide** (often included with the kit) and gradually adjust the carb to avoid rich mixtures that can damage the engine.

2. **If you want performance but want to minimize risk:**

- Opt for a **mid-range aftermarket carb kit** (e.g., a lightly modified OEM-style carb or a brand like **Walbro** or **Keihin**) that offers better performance than stock without the complexity of a race kit. These are often easier to tune and more affordable.

3. **If you re unsure or on a budget:**

- Focus on **lower-cost, high-impact modifications** first, such as **exhaust headers**, **air filters**, or **tune-ups**, before committing to a carb upgrade. Sometimes, a well-maintained stock carb with a few adjustments can yield noticeable gains without the expense.

4. **If you re racing or competing:**

- The S-46104 kit is a strong choice, but ensure your bike is fully supported by other components (e.g., clutch, transmission, and suspension) to handle the increased power safely.

Ultimately, the decision depends on your riding goals, budget, and willingness to invest time in tuning. For most **2003 2009 Scrambler 500 4x4 owners**, the race carb kit is a **premium upgrade** one that s best suited for enthusiasts who prioritize performance over simplicity. For casual riders, a more modest carb upgrade or other modifications may be a more practical starting point.

Details:

See picture for parts included. Customer Driven Quality Race-Driven. Carb Kit for Polaris Scrambler 500 4X4 2003 - 2009 Carburetor Repair Kit: 27.45: Race-Driven OEM Replacement.

part #: s46104 price

  • $27.45

specifications carbthrotatv:

  • for models: 500, 4x4, Scrambler
  • for makes: Polaris
  • for years: 2003-2009
  • brand: Race-driven
  • mpn: S-46104
  • type: Carb Kits
  • upc: 191916001752

general carbthrotatv:

  • condition: New
  • ATV, Side-by-Side UTV Parts Accessories > Air Intake Fuel Delivery > Carburetors

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  • city: Escanaba, Michigan
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offer carbthrotatv:

  • started: February 26, 2026
  • sold: 0
  • availability: In Stock
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for models: 500, 4x4, scrambler, for makes: polaris, for years: 2003-2009, type: carb kits,
category: atv parts > atv, side-by-side utv parts accessories > air intake fuel delivery > carburetors, sku: 16761777622922663,
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