RFX 90400 Fxwt Carb Drain Spanner Keihin 55SV 17MM

( Brand: Rfx ), ( Manufacturer Part Number: 90400 ), ( Part Type: Spanner ), ( Product Type: Tools ), ( Segment: Offroad ), ( Division: Shop, Tools Amp; Trailers ), ( Sub Class: Carburetor Tools ), ( Color: Silver )

Review RFX Fxwt Carb Drain Spanner Silver 17mm Keihin

The **RFX 90400 FXWT 55SV Carburetor Drain Spanner (17mm, Keihin-Compatible)** is a precision-engineered tool designed specifically for servicing and maintaining high-performance Keihin carburetors, particularly those found on modern dirt bikes, ATVs, and off-road motorcycles. Crafted from high-grade, heat-treated alloy steel, this spanner is built to deliver exceptional durability and resistance to wear, ensuring long-term reliability even under demanding conditions. Its robust construction allows it to securely grip and loosen stubborn drain plugs and drain screws with ease, preventing stripping or damage to the carburetor s delicate components. The 17mm socket size is optimized for compatibility with Keihin s popular **FXWT 55SV** carburetor model, as well as other similar carburetors in the same series, making it an indispensable accessory for mechanics, tuners, and enthusiasts who prioritize precision and efficiency in their maintenance routines.

What sets this drain spanner apart is its ergonomic design, featuring a contoured handle that reduces hand fatigue during extended use. The smooth, polished finish not only enhances grip but also minimizes the risk of accidental slips, ensuring safer and more controlled operation. Unlike generic or poorly made tools, this spanner is engineered to deliver consistent torque application, preventing over-tightening or under-tightening that could lead to leaks, improper sealing, or even carburetor damage. Its compatibility with Keihin s **FXWT 55SV** carburetor commonly found on high-performance bikes like the **Honda CRF450R, Suzuki RM-Z450, and Kawasaki KX450X** makes it a must-have for riders and technicians who demand reliability in their carburetor maintenance.

Beyond its functional excellence, the **RFX 90400** drain spanner is also a testament to thoughtful engineering, incorporating subtle yet critical details such as a slightly tapered socket for a snug fit and a flat, non-marring surface to protect the carburetor s finish. Whether you're performing routine maintenance, adjusting fuel delivery, or troubleshooting performance issues, this tool ensures that the drain plug or screw is removed or installed with precision, reducing downtime and minimizing the risk of costly repairs. For those who take their off-road riding seriously, investing in a high-quality tool like this one is a small but meaningful step toward maintaining peak performance and longevity of their bike s critical components.

The **RFX 90400 FXWT 55SV Carb Drain Spanner (17mm, Keihin-compatible)** is a specialized tool designed for servicing Keihin carburetors, particularly those found on Honda and other motorcycles. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Precision Fit for Keihin Carbs**

The spanner is specifically designed for Keihin carburetors, including the popular **55SV model** used in Honda CBR600F4i, CBR650R, and other bikes. This ensures a secure and accurate fit, reducing the risk of stripping or damaging the drain plug.

2. **Durable Construction**

RFX tools are generally built with high-quality materials, including hardened steel for the spanner head and a sturdy handle. This makes it suitable for repeated use without excessive wear.

3. **Convenience for Maintenance**

Draining the carburetor s fuel reservoir is a common task during servicing, such as when replacing the carb gasket or cleaning the float bowl. Having the right tool on hand simplifies this process, saving time and effort compared to using improvised tools (e.g., pliers or wrenches).

4. **Compatibility with Other Keihin Models**

While it is designed for the **55SV**, many Keihin carbs share similar drain plug designs. This spanner may work for other Keihin models (e.g., **54SV, 56SV**), making it a versatile addition to a mechanic s toolkit.

5. **Prevents Damage to the Drain Plug**

Using the wrong tool (e.g., a standard wrench) can round off or strip the hexagonal drain plug. This specialized spanner minimizes the risk of such damage, ensuring the plug remains usable for future servicing.

6. **Part of a Specialized Toolset**

If you own or plan to purchase other RFX tools for Keihin carbs (e.g., gasket removal tools, float bowl cleaners), this spanner integrates seamlessly into that setup.

7. **Cost-Effective for Regular Mechanics**

For someone who frequently works on Keihin-equipped bikes, purchasing this tool outright is cheaper than risking damage to the carb or wasting time searching for the right tool during a job.

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### **Cons**

1. **Limited Use Case**

This spanner is **only useful for Keihin carburetors with a 17mm drain plug**. If you work on bikes with different carburetors (e.g., Mikuni, Dell Orto, or non-Keihin models), this tool will not be applicable. It may also not fit all Keihin variants (e.g., some older or non-55SV models may have slight differences).

2. **Potential Overkill for Casual Riders**

If you only perform basic maintenance (e.g., oil changes, tire rotations) and rarely service carbs, this tool may not be necessary. Most casual riders will never need to drain a carburetor s fuel reservoir.

3. **Price Relative to Utility**

At a moderate price point (typically around $10 $20), some may question whether the cost justifies the tool s niche use. If you don t own a Keihin carb-equipped bike, the purchase may feel like an unnecessary expense.

4. **Availability of Alternatives**

In a pinch, some mechanics might use a **17mm socket or box-end wrench** instead, though this increases the risk of damaging the drain plug. If you already own a 17mm wrench, the specialized spanner may not be essential.

5. **Durability Concerns (If Poor Quality)**

While RFX tools are generally reliable, cheaper knockoffs or low-quality alternatives might wear out quickly. Always check reviews or brand reputation before purchasing to ensure longevity.

6. **Storage Space Consideration**

If you have a limited tool collection, adding a specialized spanner may not be practical. It s best suited for mechanics who already have a dedicated carb servicing setup.

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### **Conclusion**

The **RFX 90400 FXWT 55SV Carb Drain Spanner** is a **highly specialized but useful tool** for anyone who regularly works on **Keihin 55SV carburetors** or similar models. Its primary advantage lies in its **precision fit, durability, and prevention of damage** to the drain plug a critical factor in carb servicing. However, its **narrow applicability** and **potential redundancy for casual users** mean it may not be worth the investment for everyone.

- Own a **Honda CBR600F4i, CBR650R, or similar bike with a Keihin 55SV carb**,

- Perform **regular carb servicing or rebuilds**,

- Already have a **toolset for Keihin carbs**,

then this spanner is a **practical and recommended purchase**.

- Are a **casual rider or mechanic** who rarely touches carbs,

- Already have a **17mm wrench or socket**,

- Work on **non-Keihin carburetors**,

then the tool may not be necessary, and you could save money by using alternatives.

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### **Final Recommendation**

You frequently service Keihin 55SV carbs (e.g., Honda CBR600F4i, CBR650R).

You want to avoid damaging the drain plug with generic tools.

You re expanding your carb servicing toolkit.

You rarely work on carbs or don t own a Keihin-equipped bike.

You already have a 17mm wrench/socket and are cautious about using it.

You work on a variety of carburetors beyond Keihin models.

For most **serious mechanics or Honda enthusiasts**, this spanner is a **worthwhile addition** to their tool collection. For everyone else, it s best to assess whether the cost and convenience outweigh the limited use case.

Details:

Made from durable 6061 T-6 aluminum, it offers strength without added weight, making ideal for offroad riders and mechanics. Its compact, low-profile design allows for easy access in tight spaces, ensuring efficient maintenance on your Keihin Pk or Cr carburetor.Perfect trail repairs routine maintenance, this tool is built to withstand demanding conditions while providing reliable performance. RFX FXWT 90400 55SV Carb Drain Spanner Silver 17mm Keihin Pk/Cr Spanner, Factory Quality This lightweight carburetor drain spanner is designed to make removing float bowl plugs quick and easy.

part #: 90400 prices

• $18.74-$37.76

specifications intakefuelmotorcycle:

• brand: Rfx
• mpn: 90400
• part type: Spanner
• product type: Tools
• segment: Offroad
• division: Shop, Tools Amp; Trailers
• sub class: Carburetor Tools
• color: Silver

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• Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Other Air Intake Fuel Delivery
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