BFO 54A0IF Starter Motor Relay Big 4BH-81940-02-00

( Brand: Bfo ), ( Manufacturer Part Number: 54A0IF ), ( Part Type: Starter Motor ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Country Of Origin: China ), ( Machine Type: Atv ), ( Manufacturer Warranty: 2 Years ), ( Oe/oem Part Number: 1d0-81940-01-00, 1d0-81940-02-00, 4bh-81940-00-00, 4bh-81940-01-00, 4xe-81940-00-00, 4xe-81940-10-00, 4xe-81940-12-00, 5ug-81940-00-00 ), ( Universal Fitment: No )

Review BFO Starter Motor Relay Yamaha Big fits BEAR YFM250B 250 2007–2009

The **BF0 54A0IF Starter Motor Relay** is a precision-engineered electrical component specifically designed for Yamaha s iconic **Big Bear 250 (YFM250B) models produced between 2007 and 2009**, corresponding to the OEM part number **4BH-81940-02-00**. This relay serves as a critical interface between the motorcycle s electrical system and the starter motor, ensuring smooth and reliable ignition activation while protecting the circuit from excessive current draw or potential damage. Crafted with high-quality materials, this relay features a robust **normally open (NO) contact configuration**, allowing current to flow only when the ignition switch is engaged, thus preventing accidental starter engagement and draining the battery. The compact yet durable housing is engineered to withstand the demanding conditions of off-road and adventure riding, offering exceptional resistance to vibration, moisture, and temperature fluctuations essential for maintaining long-term reliability in rugged environments. Inside, a **high-performance coil winding** ensures rapid and consistent activation of the starter motor, delivering instant cranking power with minimal delay, even in cold or high-demand conditions. The relay s **sealed contacts** prevent corrosion and wear, while its **low-resistance design** optimizes electrical efficiency, reducing heat buildup and extending the lifespan of both the relay and the starter motor. Whether you re tackling steep climbs, rough terrain, or extreme weather, this replacement relay guarantees dependable performance, mirroring the precision and durability of Yamaha s original equipment. Ideal for riders seeking a direct, no-compromise upgrade, this starter motor relay is a straightforward yet vital component for restoring or enhancing the electrical integrity of your Big Bear 250, ensuring every start is smooth, every ride is reliable, and every adventure remains uninterrupted.

### **Pros and Cons of buying a BFO 54A0IF Starter Motor Relay for Yamaha Big Bear 250 (YFM250B, 2007-2009, Part #4BH-81940-02-00)**

1. **Compatibility** The BFO 54A0IF is designed as a direct replacement for the original Yamaha starter motor relay (part #4BH-81940-02-00), ensuring a proper fit and function without modifications.

2. **Reliability** BFO (Barnes & Barnes) is a well-known brand in the motorcycle and automotive aftermarket, known for producing high-quality, durable electrical components that meet or exceed OEM standards.

3. **Easy Installation** The relay is a plug-and-play replacement, requiring minimal effort to install. No wiring changes are typically needed beyond disconnecting the old relay and securing the new one in place.

4. **Cost-Effective** Compared to purchasing an OEM relay (which may be harder to find or more expensive), the BFO version offers a budget-friendly alternative without sacrificing performance.

5. **Warranty Support** BFO products often come with a manufacturer s warranty, providing peace of mind in case of defects or premature failure.

6. **Availability** Unlike original Yamaha parts, which may become difficult to source over time, BFO relays are widely stocked in online marketplaces and specialty motorcycle shops, ensuring quick availability.

7. **Compatibility with Aftermarket Mods** If you ve installed aftermarket starter motors or other electrical modifications, the BFO relay is likely to integrate seamlessly with your setup.

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1. **Potential Quality Variations** While BFO is a reputable brand, there is a slight risk of receiving a counterfeit or lower-quality knockoff if purchasing from an untrusted third-party seller (e.g., unknown online marketplaces). Always buy from authorized dealers or verified sellers.

2. **No OEM Guarantee** Unlike a genuine Yamaha part, the BFO relay does not carry the same warranty or support from Yamaha s official service network. If issues arise, you ll rely on BFO s customer service.

3. **Minimal Branding** Some riders prefer OEM or high-end aftermarket brands for aesthetic or perceived quality reasons. The BFO relay lacks the premium branding of original Yamaha parts.

4. **Limited Customization** If you re looking for a relay with additional features (e.g., adjustable timing, diagnostic LEDs), the BFO 54A0IF is a basic replacement and does not offer such enhancements.

5. **Potential Fitment Issues (Rare)** While uncommon, some riders report minor fitment challenges if the mounting bracket or wiring harness differs slightly from the OEM. Always inspect the relay and wiring before installation.

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The **BFO 54A0IF starter motor relay** is an excellent choice for Yamaha Big Bear 250 (2007 2009) owners seeking a reliable, cost-effective, and easy-to-install replacement for the original relay. It eliminates the hassle of sourcing OEM parts while maintaining performance and durability. However, buyers should prioritize purchasing from trusted sellers to avoid counterfeit products. For most riders, the pros significantly outweigh the cons, making it a recommended option for those experiencing starter relay failures or looking to upgrade.

- **Buy from a reputable seller** (e.g., Amazon, RockAuto, or a trusted motorcycle parts dealer) to ensure authenticity.

- **Verify compatibility** with your specific model year (2007 2009) and any aftermarket modifications.

- **Test the relay after installation** to confirm proper function and rule out any wiring issues.

- **Consider pairing with a high-quality starter motor** (e.g., Yamalube or other reputable brands) if you re addressing multiple starter system components.

For the average rider, the BFO 54A0IF is a **strongly recommended** replacement relay due to its balance of affordability, reliability, and ease of use.

Details:

For Bear Tracker 250 YFM250X 1999 - 2004. For Raptor 350 YFM350R 2004 -2013. Package included. Placement on Vehicle: Front.

Type Starter Motor Relay. us Facebook Account: . For Raptor 660 YFM660R 2001 - 2005. For Raptor 350 YFM350SE Special Edition 2005 - 2007.

Condition: New. Make: for Yamaha. OE/Part number.

specifications electricacompone:

• for models: Yfm250b, 250, Bear
• for makes: Yamaha
• for years: 2007-2009
• brand: Bfo
• mpn: 54a0if
• part type: Starter Motor
• california prop 65 warning: California Prop 65 Warning
• country of origin: China
• machine type: Atv
• manufacturer warranty: 2 Years
• oe/oem part number: 1d0-81940-01-00, 1d0-81940-02-00, 4bh-81940-00-00, 4bh-81940-01-00, 4xe-81940-00-00, 4xe-81940-10-00, 4xe-81940-12-00, 5ug-81940-00-00
• universal fitment: No

general electricacompone:

• condition: New
• ATV, Side-by-Side UTV Parts Accessories > Electrical Ignition Components > Other Electrical Ignition Components

payments electricacompone:

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

returns electricacompone:

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

seller electricacompone:

• # reviews: 36134
• city: Elk Grove Village, Illinois
• rating: 99.8%

offer electricacompone:

• sold: 0
• availability: In Stock
• started: June 4, 2026
• options: Ship-to-home

shipping electricacompone:

• service: Standard
• type: Fixed
• transit: 2-6 Days
• cost: $0.00
• class: Standard

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