Butom BG55 Carburetor for Stihl BG 55 BG85 BG 85 vs Simperac RY25AXB Carburetor for Ryobi 308054121
Updated August 2026 — Butom BG55 Carburetor for Stihl BG 55 BG85 BG 85 leads on features and quality.
The Butom BG55 Carburetor offers better compatibility, a more comprehensive kit, and superior quality assurance at a lower price, making it the better choice overall.
Why Butom BG55 Carburetor for Stihl BG 55 BG85 BG 85 is better
Price
Butom is $4 cheaper than Simperac.
Compatibility
Butom supports more Stihl models.
Quality
Butom uses premium materials and is wet flow tested.
Why Simperac RY25AXB Carburetor for Ryobi 308054121 is better
Brand
Simperac is known for Ryobi products.
Specificity
Simperac is tailored for Ryobi models.
Included Parts
Simperac includes two air filters.
Overall score
Specifications
| Spec | Butom BG55 Carburetor for Stihl BG 55 BG85 BG 85 | Simperac RY25AXB Carburetor for Ryobi 308054121 |
|---|---|---|
| Brand | Butom | SIMPERAC |
| Price | $14.99 | $18.99 |
| Sales Rank | 16575 | 37968 |
| Compatibility | Multiple Stihl | Ryobi only |
| Included Kit | All-in-one | Basic kit |
| Material Quality | Premium | Standard |
| Performance Testing | Wet flow tested | Not specified |
Dimension comparison
Overview of the Butom BG55 and Simperac RY25AXB Carburetors
The Butom BG55 Carburetor is priced at $14.99, while the Simperac RY25AXB Carburetor retails for $18.99. This makes the Butom about 21% cheaper than the Simperac, which could be a significant factor for budget-conscious consumers. Both carburetors are designed to replace components in their respective leaf blower models, ensuring that users can maintain their equipment without needing to purchase entirely new units.
Compatibility and Applications
The Butom BG55 Carburetor is compatible with a range of Stihl leaf blower models, including the BG 55, BG 85, and SH 55, among others. It replaces several part numbers, ensuring a wide application. In contrast, the Simperac RY25AXB is specifically designed for Ryobi models, such as the RY25AXB and RY25AXBVNM, making it suitable for users with these specific devices. This distinction in compatibility suggests that the Butom BG55 offers more versatility for Stihl users compared to the Simperac, which is limited to a specific brand and model range.
Features and Specifications
The Butom BG55 comes equipped with a tune-up kit, which includes a carburetor, air filter, fuel line, fuel filter, spark plug, primer bulbs, and gaskets. This all-in-one kit saves time and money compared to separate purchases. Meanwhile, the Simperac RY25AXB package includes a carburetor, two air filters, a spark plug, a fuel filter, gaskets, fuel lines, and a primer bulb. While both products offer essential components, the Butom's comprehensive kit may provide added value for users looking for a complete solution.
Quality and Construction
Both carburetors are designed with quality in mind, but their construction materials differ slightly. The Butom BG55 emphasizes premium materials, including brass components and anodized aluminum for durability, ensuring resistance to heat and corrosion. The Simperac RY25AXB, while also constructed for reliability, does not specify its material composition. The Butom's focus on high-quality materials may appeal to consumers seeking longevity and performance for their Stihl devices.
Performance and Testing
The Butom BG55 carburetor is wet flow tested to emulate real-world engine performance, which suggests a commitment to operational reliability. This testing is crucial for ensuring that the carburetor functions optimally in various conditions. The Simperac RY25AXB does not mention any specific performance testing, which may leave some users questioning its reliability compared to the Butom. The performance assurance provided by the Butom could be an important deciding factor for consumers who prioritize engine performance.
Sales Rank and Popularity
In terms of sales rank, the Butom BG55 holds a position at 16,575, indicating a moderate level of popularity among consumers. The Simperac RY25AXB has a sales rank of 37,968, suggesting it is less popular in comparison. The higher rank of the Butom may reflect greater consumer satisfaction or demand, making it a more trusted option among users looking for a reliable carburetor.
Price Comparison
With the Butom BG55 priced at $14.99 and the Simperac RY25AXB at $18.99, there is a clear price difference of $4.00. This 21% difference may influence buyers who are looking for quality replacements without stretching their budgets. Given that both products offer similar functionalities, the lower price point of the Butom could make it the more attractive option for cost-conscious shoppers.
Which should you buy?
Ultimately, the decision between the Butom BG55 Carburetor and the Simperac RY25AXB Carburetor hinges on several factors, including compatibility, price, and quality. The Butom offers a broader compatibility with various Stihl models, a more comprehensive kit, and better quality assurance through testing, all at a lower price of $14.99. Conversely, the Simperac is specifically tailored for Ryobi models but comes at a higher price of $18.99 with less information on performance testing. For users seeking a reliable, cost-effective solution for their Stihl leaf blowers, the Butom BG55 stands out as the preferred choice.

