BOYESEN MN-RXB6 Quickshot Accelerator Cover Fuel Pump MN/RXB6

( Brand: Boyesen ), ( Manufacturer Part Number: MN/RXB6 ), ( Compatible Year: 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 ), ( Bundle Description: 1 Pc Genuine Boyesen Quickshot Accelerator Pump Cover ), ( Type: Quickshot Accelerator Pump Cover ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review BOYESEN Mn/rxb6 Quickshot Accelerator Pump Cover Yamaha Fuel Rk fits WR250F 2001–2012

The **Boyesen MN/RXB6 QuickShot Accelerator Pump Cover** is a meticulously engineered, high-performance upgrade designed specifically for the **2001 2012 Yamaha WR250F**, ensuring optimal fuel delivery and throttle response while protecting the delicate accelerator pump mechanism from wear and contamination. Crafted from durable, heat-resistant **polypropylene**, this precision-machined cover is engineered to fit snugly over the stock accelerator pump, providing a sealed environment that prevents dirt, debris, and moisture from infiltrating the fuel system. The cover features a **smooth, aerodynamic contour** that minimizes turbulence and maximizes airflow, allowing the pump to operate with greater efficiency and longevity. Unlike generic aftermarket solutions, the Boyesen QuickShot is built to exacting standards, ensuring a **perfect, interference-free fit** with the WR250F s carburetor, reducing the risk of leaks or improper sealing. This upgrade is particularly beneficial for riders who push their bikes hard, as it helps maintain consistent fuel pressure under high-throttle conditions, enhancing acceleration and overall engine performance. Whether used in off-road adventures, track days, or daily commuting, the Boyesen MN/RXB6 QuickShot Accelerator Pump Cover is a subtle yet impactful modification that reinforces reliability and extends the life of your Yamaha s fuel system. Its straightforward installation requiring no modifications to the carburetor makes it an ideal choice for both DIY enthusiasts and professional mechanics seeking a simple yet effective performance enhancement.

### Pros and Cons of buying a Boyesen MN/RXB6 QuickShot Accelerator Pump Cover for a 2001-2012 Yamaha WR250F Fuel Injection System

1. **Improved Fuel Flow and Performance** The QuickShot accelerator pump cover is designed to enhance fuel delivery by ensuring a steady and consistent flow of fuel into the intake tract. This can lead to better throttle response, smoother acceleration, and improved overall engine performance, especially in cold starts or when the engine is under load.

2. **Reduced Fuel Pump Wear** By improving fuel pressure and flow, the QuickShot can help reduce the strain on the stock fuel pump, potentially extending its lifespan. A well-functioning fuel system also means less risk of fuel starvation or hesitation during high-demand situations.

3. **Easier Installation** The design is straightforward, requiring minimal modification to the stock fuel system. It typically involves removing the existing accelerator pump cover and replacing it with the Boyesen unit, which can be done without extensive tools or mechanical expertise.

4. **Compatibility with Aftermarket Mods** If you plan to add other performance upgrades (such as a cold air intake, exhaust system, or ECU tune), the QuickShot can complement these modifications by ensuring the engine receives optimal fuel delivery, which is critical for maximizing gains from other parts.

5. **Cost-Effective Upgrade** Compared to more extensive fuel system overhauls (such as upgrading the fuel pump or injectors), the QuickShot is a relatively inexpensive modification that can yield noticeable improvements in drivability and power.

6. **Minimal Risk of Installation Errors** Since the installation is simple and doesn t involve complex wiring or major disassembly, the risk of mistakes during installation is low. This makes it a beginner-friendly upgrade.

7. **Potential for Better Cold Weather Performance** In colder climates, the stock accelerator pump cover can sometimes restrict fuel flow, leading to sluggish starts or hesitation. The QuickShot s design helps mitigate this issue by maintaining consistent fuel pressure even in low-temperature conditions.

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1. **Limited Power Gains** While the QuickShot can improve throttle response and smoothness, it is not a high-performance part that significantly increases horsepower or torque. Expect noticeable but modest improvements rather than dramatic power surges.

2. **Not a Standalone Solution for Poor Performance** If your WR250F is experiencing issues due to worn spark plugs, clogged air filters, a failing fuel pump, or other mechanical problems, the QuickShot alone won t resolve these underlying issues. It s best used as part of a broader maintenance or upgrade strategy.

3. **Requires Proper Tuning for Optimal Results** If you plan to pair the QuickShot with other performance parts (like a cold air intake or exhaust), you may need to adjust the ECU settings to compensate for the increased fuel flow. Without tuning, you could risk running rich or lean mixtures, which can harm the engine or reduce efficiency.

4. **Potential for Fuel System Contamination** If the stock fuel system is dirty or the fuel filter is clogged, the QuickShot may not perform as intended. It s advisable to clean or replace the fuel filter and ensure the fuel tank is clean before installing it.

5. **Minimal Impact on High-Speed Performance** The QuickShot primarily benefits low-to-mid-range throttle response. At high RPMs or wide-open throttle, the gains may be negligible unless combined with other modifications (such as a high-flow fuel pump or upgraded injectors).

6. **Not a Permanent Fix for Fuel Pump Issues** If your stock fuel pump is failing or struggling to maintain adequate pressure, the QuickShot will not compensate for this. In such cases, upgrading the fuel pump is necessary for reliable performance.

7. **Aftermarket Parts Reliability** While Boyesen is a reputable brand, as with any aftermarket part, there is a slight risk of receiving a defective or incompatible unit. Purchasing from a trusted dealer or seller can mitigate this risk.

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The Boyesen MN/RXB6 QuickShot accelerator pump cover is a practical and affordable upgrade for the 2001-2012 Yamaha WR250F, particularly if you re looking to enhance throttle response, smooth out acceleration, and reduce fuel pump strain. It s an easy-to-install part that can be a valuable addition to a broader performance or maintenance plan, especially when combined with other complementary upgrades (such as a clean fuel system, proper air filter, and ECU tuning if needed).

However, it is not a magic solution for poor engine performance or a high-power modification. If your bike is already running poorly due to neglected maintenance or failing components, addressing those issues first will yield better results. The QuickShot is best suited for riders who want subtle but noticeable improvements in drivability, cold starts, and fuel efficiency without significant mechanical work.

- You ve recently performed basic maintenance (oil change, air filter replacement, fuel filter cleaning/replacement).

- You re combining it with other performance parts (e.g., cold air intake, exhaust) and plan to tune the ECU accordingly.

- You want a simple, low-risk upgrade to improve throttle response and fuel system efficiency.

Avoid relying solely on the QuickShot if your bike has persistent performance issues, as deeper diagnostics or upgrades (such as a fuel pump replacement or injector cleaning) may be necessary. For most riders, the Boyesen QuickShot is a worthwhile addition to a well-maintained or upgraded WR250F, offering tangible benefits with minimal effort.

Details:

Boyesen Quickshot Accelerator Pump Cover for 2001 - 2012 Yamaha WR250F - Fuel rk: Status: In Stock.

part #: mnrxb6 prices

• $119.92-$124.98

specifications intakefuelmotorcycle:

• for models: Wr250f
• for makes: Yamaha
• for years: 2001-2012
• brand: Boyesen
• mpn: Mn/rxb6
• compatible year: 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001
• bundle description: 1 Pc Genuine Boyesen Quickshot Accelerator Pump Cover
• type: Quickshot Accelerator Pump Cover
• core charge: Free No Core Charge
• fitment type: Direct Replacement

shipping intakefuelmotorcycle:

• service: Standard
• class: Standard
• cost: $0.00
• type: Fixed
• transit: 5-6 Days

payments intakefuelmotorcycle:

• other
• credit card: Visa
• wallet: Google-pay

returns intakefuelmotorcycle:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

offer intakefuelmotorcycle:

• availability: In Stock
• quantity: 1
• started: February 13, 2026
• options: Ship-to-home
• sold: 0

seller intakefuelmotorcycle:

• city: Multiple warehouses
• rating: 98.7%
• # reviews: 17423

general intakefuelmotorcycle:

• condition: New
• Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Other Air Intake Fuel Delivery

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