BFO J4BNWI Starter Motor Relay VMX1700A 5YT-81940-00-00

( Brand: Bfo ), ( Manufacturer Part Number: J4BNWI ), ( Part Type: Starter Motor ), ( California Prop 65 Warning: California Prop 65 Warning ), ( 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 Max fits 1700 2011–2020

The **BF0 J4BNWI Starter Motor Relay** is a high-performance, direct-fit replacement designed specifically for Yamaha s 1700 VMX (VMX1700A) models produced between 2011 and 2020, corresponding to the original equipment part number **5YT-81940-00-00**. Engineered to meet or exceed OEM specifications, this relay ensures reliable electrical engagement for the starter motor, eliminating common issues like intermittent cranking, weak starts, or complete starter failure. Crafted from durable, corrosion-resistant materials, the BF0 unit is built to withstand the demanding conditions of off-road and adventure riding, where moisture, dust, and vibration can compromise standard aftermarket components. Its robust construction features a precision-molded housing that securely houses the internal switch mechanism, preventing debris ingress while maintaining a tight, weatherproof seal. The relay incorporates a high-quality, long-life contact system that resists pitting and welding, ensuring smooth, consistent electrical flow to the starter solenoid every time you turn the key or activate the starter button. Whether you re tackling rugged trails, navigating rough terrain, or simply maintaining your bike for peak performance, this relay delivers dependable operation, reducing the risk of unexpected starter malfunctions that could leave you stranded. Its universal compatibility with Yamaha s 1700 VMX series makes it an ideal upgrade for riders seeking enhanced reliability without the hassle of custom wiring or modifications. Backed by rigorous quality control and designed for easy installation, the BF0 J4BNWI Starter Motor Relay is the perfect solution for restoring confidence in your bike s starting system.

### **Pros and Cons of buying a BFO J4BNWI Starter Motor Relay for Yamaha VMX1700 (2011-2020, Part #5YT-81940-00-00)**

1. **Direct OEM Replacement** The BFO J4BNWI is designed as a direct replacement for the original Yamaha starter motor relay (part #5YT-81940-00-00), ensuring compatibility with the VMX1700 s electrical system. This reduces the risk of installation issues or compatibility problems.

2. **High-Quality Construction** BFO is a reputable brand known for manufacturing reliable electrical components. Their relays are built to withstand repeated use and provide consistent performance, which is critical for starter motor operation.

3. **Easy Installation** The relay is designed to fit seamlessly into the existing wiring harness without requiring modifications. Most users report that installation takes less than 30 minutes, especially if they have basic electrical knowledge.

4. **Cost-Effective Solution** Replacing a faulty relay is significantly cheaper than replacing the entire starter motor or ignition system. The BFO J4BNWI is priced competitively compared to OEM parts, offering good value for money.

5. **Warranty and Support** BFO products often come with a warranty (typically 1-2 years), providing peace of mind in case of defects. The brand also has a customer support system for troubleshooting or replacements if needed.

6. **Prevents Common Electrical Issues** A failing relay can cause intermittent starting problems, electrical gremlins, or even damage to the starter motor over time. Replacing it proactively can prevent more costly repairs down the line.

7. **Aftermarket Trust** BFO is a well-established aftermarket supplier for Yamaha and other motorcycle brands, meaning this part has been tested by many riders and mechanics, reducing the likelihood of unexpected failures.

---

1. **Potential Counterfeit Concerns** While BFO is a legitimate brand, some sellers (especially on third-party platforms) may sell counterfeit or low-quality knockoffs. Always purchase from authorized dealers or verified sellers to avoid this risk.

2. **Mixed Reviews on Longevity** Some users report that while the BFO relay works initially, it may fail prematurely compared to the original Yamaha part. However, this is not universal, and many riders have no issues with it lasting the expected lifespan.

3. **No Significant Performance Upgrade** This relay is not an "upgrade" in terms of power or durability it is a direct replacement. If your original relay failed due to a design flaw (unlikely in this case), the BFO may not resolve the underlying issue.

4. **DIY Installation Risk** While straightforward, wiring a relay incorrectly can lead to electrical shorts or damage to the bike s system. Riders with limited electrical experience may need to consult a professional.

5. **Limited Availability Outside Specialty Shops** Unlike OEM parts, the BFO relay may not be stocked in every motorcycle shop, requiring online purchase or special ordering.

6. **No Guarantee Against Environmental Factors** If the original relay failed due to extreme conditions (e.g., moisture, corrosion, or physical damage), the BFO relay could also be affected by the same issues unless the root cause is addressed.

---

The **BFO J4BNWI starter motor relay** is a **strong aftermarket alternative** to the original Yamaha part for the VMX1700 (2011-2020). It offers **reliability, ease of installation, and cost savings** while maintaining compatibility with the bike s system. However, **quality varies by seller**, and some users report **shorter lifespan than expected**. If you prioritize **direct OEM replacement with minimal risk**, this is a **solid choice**, especially if purchased from a trusted source.

- Buying from an **authorized BFO dealer** or a reputable online retailer (e.g., Amazon, Cycle World, or Yamaha-approved parts suppliers).

- Verifying the **part number and authenticity** before purchase.

- If the relay fails prematurely, **check for wiring issues or other electrical problems** that may have contributed to the failure.

---

- You need a **direct replacement** for a faulty starter motor relay.

- You want a **cost-effective, high-quality aftermarket solution**.

- You re comfortable with **basic electrical work** or have a mechanic assist with installation.

- You suspect **counterfeit products** (stick to verified sellers).

- You re looking for a **long-term "bulletproof" solution** (though rare, some users report shorter lifespans than OEM parts).

- You re unsure about **DIY installation** and don t have access to a mechanic.

**Final Verdict:** The BFO J4BNWI is a **good choice for most riders** replacing a bad relay, provided it s sourced correctly. For **maximum reliability**, pair it with a **pre-purchase inspection** of the starter motor and wiring to ensure no deeper issues exist.

Details:

For Bear Tracker 250 YFM250X 1999 - 2004. PRODUCT DISPLAY Starter Motor Relay for Yamaha V Max 1700 VMX1700A 2011 2020 5YT-81940-00-00. Make: for Yamaha. For Raptor 350 YFM350R 2004 -2013.

For Raptor 350 YFM350SE Special Edition 2005 -2007. Guaranteed, Fitment Price match Always the correct part. Condition: New. Type Starter Motor Relay.

Placement on Vehicle: Front. Fast Shipping. OE/Part number. Package included.

specifications electricacompone:

• for models: 1700
• for makes: Yamaha
• for years: 2011-2020
• brand: Bfo
• mpn: J4bnwi
• part type: Starter Motor
• california prop 65 warning: California Prop 65 Warning
• 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

payments electricacompone:

• other
• credit card: Mastercard
• wallet: Apple-pay

shipping electricacompone:

• service: Standard
• type: Fixed
• class: Standard
• transit: 3-8 Days
• cost: $0.00

seller electricacompone:

• city: Elk Grove Village, Illinois
• # reviews: 1828
• rating: 99.2%

returns electricacompone:

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

offer electricacompone:

• options: Ship-to-home
• best offers: True
• quantity: 15
• sold: 0
• availability: In Stock
• started: April 6, 2026

general electricacompone:

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

Bfo J4BNWI Is Similar To:

• Rqpi53 Bfo On Off Run Start Stop Handlebar Headlight Switch For (29.3% similar) For yamaha warrior 1996 -2001. Left front brake caliper with pads fits for yamaha rhino 450 700 2004 -2007. Carburetor carb VM24 for yamaha blaster 200 YFS200 YFS200 1988 -2002. New cylinder piston gasket cylinder head kit 88-06 fit for yamaha blaster YFS200. New condition...(December 9th, 2021)
• 4a2u8m Bfo Starter Relay Solenoid For Yamaha Raptor Teeth (43.1% similar) For Lester 18760. Starter relay solenoid for yamaha raptor 660R YFM660R 2001 -2005. For yamaha raptor 660R 660CC 2001 YFM660R. For yamaha raptor 660R 660CC 2002 YFM660R. For yamaha raptor 660R 660CC 2002 YFM660R limited edition. The Bfo 4A2U8M is in new condition...(December 23rd, 2021)
• Ylmb50 Bfo Light On Off Stop Start Switch For Honda Atv (29.6% similar) Fits for Honda atv ATC250 ATC250SX 1985 -1987. Combination l/h switch kill light hi low starter switch for Honda ATC250 ACT 250SX. Bfo twin tube clovers shocks absorbed suspension kits for Honda Cr-v 1996 -2001. The Bfo YLMB50 is in new condition...(December 28th, 2021)
• J7n3lu Bfo Starter For Honda Sportrax Ex Atv (36.6% similar) For Honda TRX400EX Sportrax 400 ex 2005 -2008 397CC. Starter for Honda atv 400 TRX400 spoor TRX TRX400EX 31200-HN1-A41. All-terrain vehicle atv. Starter type: PMed. For Honda TRX400X 2009 -2014 397CC. The Bfo J7N3LU is in new condition...(January 3rd, 2022)
• Klp1ej Bfo Unit Starter Motor For Kymco Atv Maxxer (46.7% similar) For GMC atv mixer 375 366CC 2010 . For GMC atv mu 375 366CC 2009 -2014. For GMC atv mu 400 367CC 2008 -2011. For arctic cat atv 375 2X4 376CC 2002 . For arctic cat atv 375 4X4 376CC 2002 . For arctic cat atv 400 2X4 376CC 2003 -2004. The Bfo KLP1EJ is in new condition...(January 7th, 2022)
• 8qd5zj Bfo New Starter For Yamaha Atv Utv Kodiak Grizzly Rhino (34.9% similar) Starter for yamaha grizzly Kodiak wolverine rhino 400 450 600 660 atv/UTV 18759. For yamaha all-terrain vehicle atv grizzly 400 YFM4FG 2007 -2008 401CC. For yamaha all-terrain vehicle atv grizzly 400 4WD hunter YFM40FBH 2007 -2008 401CC. The Bfo 8QD5ZJ is in new condition...(January 12th, 2022)
• H4gcd7 Bfo Cdi Ignition Box Module For Yamaha Kodiak (34.5% similar) CID ignition box module for yamaha Kodiak 400 YFM400FW 1993 - 1995 . For yamaha Kodiak 400 YFM400FW 4X4 1993 . For yamaha Kodiak 400 YFM400FW 4X4 1994 . For yamaha Kodiak 400 YFM400FW 4X4 1995 . Quantity: 1 x ignition CID box as picture shows. The Bfo H4GCD7 is in new condition...(January 13th, 2022)
• Avx0om Bfo Switch On Off Run Start Stop Headlight For Yamaha (39.5% similar) Switch on/off/run/start/stop headlight for yamaha warrior 96-01 4GB-83973-09-00. 12V starter for yamaha warrior 350 YFM350 YFM350X atv YFM-350X YFM35X 1987 -2001. Carburetor for yamaha PW80 PW 80 y zinger 1983 -2006 dirt bike new carb. New condition...(January 22nd, 2022)
• For Honda Atv Trx300 Fourtrax 1988-1995 Bfo Start Stop Switch (18.9% similar) For Honda atv TRX300FW footrace 4X4 1988 -1995. For Honda atv TRX300 footrace 1988 -1995. 10 PCs turbo manifold kit 350 hp for handsets for D15Z1 D16Z6 D16Y7 D16Y5. 4340 forged steel h-beam connecting rods APR bolts for Honda CBR1000RR 2008 -2015. New condition...(January 24th, 2022)
• Fym42a Bfo Voltage Regulator Rectifier And Stator Replaces For Yamaha (34.6% similar) For yamaha atv YFZ450 s/t 2004 -2005. For yamaha atv YFZ450 w/x/y 2006 -2009. For yamaha atv YFZ450 2012 -2013. Type: stater regulator rectifier. Fuel pump cut off relay fit for Kawasaki MULE1000-3020 replaces 27034-1053. New condition...(January 24th, 2022)
• 185s6h Bfo Starter And Relay Solenoid For Yamaha Atv Raptor (42.5% similar) For yamaha raptor 660R 660CC 2001 YFM660R. For yamaha raptor 660R 660CC 2002 YFM660R. For yamaha raptor 660R 660CC 2002 YFM660R limited edition. For yamaha raptor 660R 660CC 2003 YFM660R. For yamaha raptor 660R 660CC 2004 YFM660R. New condition...(January 29th, 2022)