BOYESEN MN-7X6J Pro Reeds Fuel Eb MN/7X6J 350L

( Brand: Boyesen ), ( Manufacturer Part Number: MN/7X6J ), ( Compatible Year: 1993 1992 1991 1990 ), ( Compatible Model: Trail Boss 350l 4x4 ), ( Bundle Description: 1 Pc Genuine Boyesen Pro Series Reeds ), ( Type: Pro Series Reeds ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review BOYESEN Mn/7x6j Pro Series Reeds Polaris Fuel And Eb fits TRAIL BOSS 4X4 1990–1993

The Boyesen MN/7X6J Pro Reeds are a meticulously engineered set of aftermarket reeds designed specifically for the 1990 through 1993 Polaris Trail Boss 350L 4x4 Fuel models, offering a premium solution for riders seeking enhanced performance, reliability, and durability. Crafted from high-quality, precision-machined stainless steel, these reeds are built to replace the stock intake reeds, delivering a significant boost in airflow efficiency while maintaining optimal throttle response and engine smoothness. The unique 7X6J design features a carefully calibrated internal geometry that minimizes turbulence and maximizes volumetric efficiency, ensuring that your Trail Boss 350L s fuel-injected engine receives a steady, unrestricted flow of air-fuel mixture critical for both cold starts and high-RPM performance. Whether you re tackling rugged off-road trails, hauling heavy loads, or cruising on paved roads, these reeds are engineered to handle the demands of your machine with ease, reducing backpressure and improving overall engine breathing. The Boyesen MN/7X6J Pro Reeds are a direct-fit replacement, ensuring a seamless installation process without the need for modifications, and their robust construction is designed to withstand the harsh conditions of off-road use, including exposure to dust, moisture, and extreme temperatures. Backed by Boyesen s reputation for quality and performance, these reeds are an ideal upgrade for enthusiasts looking to unlock the full potential of their Trail Boss while maintaining the integrity of their engine s fuel system.

### Pros and Cons of Buying Boyesen MN/7X6J Pro Reeds for a 1990-1993 Polaris Trail Boss 350L 4x4 Fuel EB

1. **Improved Airflow and Performance** The Boyesen MN/7X6J Pro reeds are designed to enhance airflow into the carburetor, which can lead to better throttle response, smoother power delivery, and improved acceleration. This is particularly beneficial for older engines that may have developed restrictions over time.

2. **Durability and Quality** Boyesen reeds are known for their robust construction, often made from high-quality materials that resist warping, cracking, or wear. This can extend the lifespan of your carburetor and reduce the need for frequent replacements.

3. **Better Fuel Efficiency** With optimized airflow, the engine may run more efficiently, potentially improving fuel economy, especially if the original reeds were worn or clogged.

4. **Easier Installation** Boyesen reeds are designed to fit standard carburetor setups, and the MN/7X6J Pro model is compatible with many Polaris engines from that era. Installation is typically straightforward, requiring only basic tools.

5. **Aftermarket Support and Availability** Boyesen is a well-established brand with a strong aftermarket presence. Parts, installation guides, and troubleshooting resources are widely available, making it easier to address any issues that may arise.

6. **Potential for Increased Horsepower** While not a dramatic upgrade, properly functioning reeds can help restore or maintain peak engine performance, which may feel like a power boost compared to degraded original components.

7. **Compatibility with Modifications** If you ve made other engine modifications (e.g., headers, exhaust, or carburetor tuning), Boyesen reeds can complement those changes by ensuring the carburetor is operating at its best.

---

1. **Cost** Boyesen reeds are not cheap, especially when purchased as a complete set. For a 1990-1993 Trail Boss 350L, the price may be higher than aftermarket alternatives or DIY solutions like cleaning or replacing the original reeds.

2. **Potential Overkill for Stock Engines** If your engine is running well with the original reeds and carburetor, upgrading may not provide noticeable benefits. The performance gains are often incremental, and the cost may not justify the upgrade unless you re experiencing specific issues (e.g., rough idle, poor acceleration).

3. **Learning Curve for Installation** While not extremely difficult, installing reeds requires careful attention to alignment, gasket placement, and carburetor adjustments. Improper installation can lead to leaks, poor performance, or even damage to the carburetor.

4. **Maintenance Requirements** Like any aftermarket part, Boyesen reeds will eventually wear out or become dirty. They may require periodic cleaning or replacement, adding to long-term maintenance costs.

5. **Compatibility Concerns** While the MN/7X6J Pro is designed for many Polaris engines, double-checking the exact carburetor model (e.g., Holley, Kehler, or other) is crucial. Mixing up reed sizes or types could worsen performance rather than improve it.

6. **No Guarantee of Fixing Underlying Issues** If your engine has other problems (e.g., worn pistons, clogged jets, or a failing carburetor), replacing the reeds alone won t resolve those issues. A full carburetor rebuild or engine inspection may still be needed.

7. **Environmental Factors** If you ride in dusty or dirty conditions, reeds can clog more quickly, requiring more frequent cleaning or replacement. This may offset some of the benefits of the upgrade.

---

The Boyesen MN/7X6J Pro reeds are a solid upgrade for a 1990-1993 Polaris Trail Boss 350L if you re experiencing carburetor-related issues (e.g., sluggish response, rough idle, or poor fuel economy). They offer improved airflow, durability, and potential performance gains, especially if the original reeds are worn or damaged. However, they are not a magic fix and may not be worth the cost if your engine is already running well.

If you re considering this upgrade, weigh the potential benefits against the cost and your engine s current condition. If you re unsure, start with simpler fixes like cleaning the carburetor or checking for clogged jets before investing in new reeds.

- **If your engine is running poorly with the original reeds or carburetor:** Proceed with the Boyesen MN/7X6J Pro reeds as a targeted upgrade. They are a reliable choice and may restore performance.

- **If your engine is running fine:** Skip the upgrade unless you re planning other modifications (e.g., headers, exhaust) that would benefit from improved airflow.

- **If you re on a budget:** Consider cleaning or rebuilding the original carburetor before investing in new reeds. A carburetor rebuild kit or professional cleaning may be a more cost-effective solution.

- **If you re unsure about installation:** Consult a mechanic or experienced Polaris enthusiast to ensure proper fitting and adjustment.

Ultimately, the Boyesen reeds are a worthwhile upgrade for those who need better carburetor performance, but they should be part of a broader evaluation of your engine s health.

Details:

Boyesen Pro Series Reeds for 1990 - 1993 Polaris Trail Boss 350L 4X4 - Fuel eb: Status: In Stock.

part #: mn7x6j prices

• $45.44-$85.58

specifications intakefuelmotorcycle:

• for models: 4x4, Trail, Boss
• for makes: Polaris
• for years: 1990-1993
• brand: Boyesen
• mpn: Mn/7x6j
• compatible year: 1993 1992 1991 1990
• compatible model: Trail Boss 350l 4x4
• bundle description: 1 Pc Genuine Boyesen Pro Series Reeds
• type: Pro Series Reeds
• core charge: Free No Core Charge
• fitment type: Direct Replacement

payments intakefuelmotorcycle:

• other
• credit card: Visa
• wallet: Paypal

general intakefuelmotorcycle:

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

seller intakefuelmotorcycle:

• # reviews: 18357
• rating: 98.8%
• city: Multiple warehouses

returns intakefuelmotorcycle:

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

offer intakefuelmotorcycle:

• options: Ship-to-home
• sold: 0
• started: March 5, 2026
• availability: In Stock
• quantity: 1

shipping intakefuelmotorcycle:

• type: Fixed
• transit: 5-8 Days
• cost: $0.00
• service: Standard
• class: Standard

Boyesen MN-7X6J Is Similar To:

• 011r Boyesen Power Reeds Reed Petal (35.8% similar) See if someone else accepted the delivery on your behalf at address. Generic image shown. Boyesen power reeds this item fits the following model's: Kawasaki JS300 1988 1987 1986 300SX 1991 1990 1989 type: reed petal style: dual stage material: fiberglass sold as: each use a patented ...(November 23rd, 2018)
• 012r Boyesen Power Reeds (32.1% similar) Part: power reeds Boyesen 012R applications 1988 Kawasaki JF650 X2 1988 JS650 650SX1989 X21989 TS1990 X21990 650SX1991 JL650 991 X21991 TS1992 650SX1992 992 X21993 650SX1993 993 TS1994 994 X21994 TS1995 995 X21995 TS1996 gifts use a patented dual stage fiberglass design for more air flow, ...(November 10th, 2018)
• 040444 Boyesen Boysen Pro Series (33.3% similar) Boyesen pro series reeds part number...(July 11th, 2017)
• Yz Power Reeds Yamaha Boyesen Yz60 11981-1983 60 (26.5% similar) More air flow, more air velocity and more power...(August 5th, 2014)
• 12 Boyesen Watercraft Power Reeds 804429000029 (31.3% similar) Expedited shipping via USPS priority mail with delivery confirmation is available. This occasionally happens, and is rare...(June 7th, 2018)
• 5243934 Boyesen New Pro Series Carbon Reeds Bin (41.5% similar) I really appreciate that. If I am at fault pay return shipping back to me. Boyesen pro series carbon reed 44 CR250 RM250 new in package bin 214 fast free USA shipping. This would make a great item for anyone...(July 14th, 2018)
• Stock Super 568sf1 Reeds Boyesen (28.3% similar) What makes us different let's face it. There are simply too many variables that apply to clothing sizing for the human body. You can even come in and see us at our newly re model ed retail store. Motorcycle market offers the best brand names and the highest quality goods. We, like any technology ...(September 11th, 2014)
• 601 Boyesen Power Reeds Dual Stage Fiberglass 804429002894 (38.4% similar) Improved engine efficiency and fuel economy for the long distance rider. More air velocity. The multi-port feature of bottom reed creates more channels for charge, delivering increased velocity to intake ports. More horsepower throughout the power band for guaranteed performance. Dual-stage reeds ...(May 1st, 2018)
• 603 Boyesen Power Reeds For 665760824718 (40.6% similar) Boyesen power reeds plus free contrasting sticker fits Yamaha YZ80 years 1980 through 1984 use a patented dual stage fiberglass design. More air flow, velocity and power...(July 12th, 2017)
• 604 Boyesen Power Reeds Dual 804429002924 (38.8% similar) Crisper throttle response for fast corner exits and surer jumps. More air velocity. The difference in stiffness between top reed and bottom allow reeds to respond quickly accurately changes engine pressure. The benefits price shown is for one set of reeds. Note: certain model's need to use the stock...(October 31st, 2017)
• 605 Boyesen Power Reeds Dual 804429002931 (38.8% similar) Improved engine efficiency and fuel economy for the long distance rider. More overall power. More horsepower throughout the power band for guaranteed performance. Compare the microfiche for USA model to your be sure they are same. The benefits price shown is for one set of reeds. Note: image may not...(September 1st, 2017)