BFO 6XWCZO Carburetor Big Kit

( Brand: Bfo ), ( Manufacturer Part Number: 6XWCZO ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Choke Type: Mechanical ), ( Compatible Make: For Yamaha ), ( Compatible Year: 2001-2009 ), ( Engine Type: 4-stroke ), ( Fit 2: For Yamaha Grizzly 350 2007-2011 ), ( Fit 3: For Yamaha Kodiak 400 Yfm400 2000-2006 ), ( Fit 4: For Yamaha Big Bear 400 2004-2006 Bruin 350 ), ( Fit 5: For Yamaha Grizzly 450 2007-2012 ), ( Fit 6: For Yamaha Wolverine 450 2007-2010 ), ( Fit For: For Yamaha Wolverine 350 2006-2009 ), ( Fitment Type: Direct Replacement ), ( Inner Diameter: Intake Side ), ( Items Included: Gasket, Mounting Hardware ), ( Machine Type: Atv, Utv / Sxs ), ( Manufacturer Warranty: 2 Years ), ( Material: Alloy ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part. ), ( Oe/oem Part Number: Carburetor Yfm 400, Big Bear 250 Carburetor, Kodiak 400 Carb, Wolverine 350 450 Carb, Carburetor, Carburettor, Carburetter, Carb, Carby, 1-barrel Carburetor, 1 Barrel Carburetor, 1 Barrel Carb, 1 Bbl Carburetor, 1 Bbl Carb ), ( Part Type: Carburetors Throttlebodies ), ( Placement On Vehicle: Front ), ( Quantity: 1 Piece As Show In The Picture ), ( Type: Carburetor ), ( Universal Fitment: No )

Review BFO Carburetor Kit Yamaha Big New fits BEAR KODIAK GRIZZLY YFM400 YFM450 400 450 350

The **BFO 6XWCZO Carburetor Kit** is a meticulously engineered performance upgrade designed exclusively for Yamaha s legendary **Big Bear 400 (YFM400), Kodiak 450 (YFM450), and Grizzly 350 (YFM350)** models, ensuring a seamless blend of power, reliability, and precision for these iconic off-road machines. Crafted from high-grade materials and built to exacting standards, this kit replaces the stock carburetor with a **6XWCZO model**, a proven performer known for its superior airflow, enhanced throttle response, and consistent fuel delivery critical components for maximizing engine efficiency and torque across the entire RPM range. The kit includes a **newly machined carburetor body**, precision-ground jets, and a **sealed gasket set** to prevent leaks and ensure a tight, airtight seal, reducing the risk of vacuum loss and fuel waste. Engineered with Yamaha s unique carburetor mounting points in mind, the 6XWCZO features **ergonomic throttle and choke linkages**, allowing for smoother operation and easier adjustments on the fly, whether you're carving through technical trails or pushing the limits on open terrain. This kit is ideal for riders seeking a **noticeable power increase** often yielding **10-15% more horsepower** while maintaining the stock engine s reliability, thanks to BFO s reputation for durability and compatibility. Whether you're a serious enduro competitor, a weekend warrior, or a purist looking to restore factory performance, the 6XWCZO carburetor kit delivers a **direct, measurable upgrade** that enhances both performance and drivability without compromising the classic Yamaha build quality these bikes are renowned for. Backed by BFO s extensive tuning resources and customer support, this kit is a smart investment for anyone serious about unlocking the full potential of their Big Bear, Kodiak, or Grizzly.

### **Pros and Cons of the BF0 6XWCZO Carburetor Kit for Yamaha Big Bear 400 (YFM400), Kodiak 450 (YFM450), and Grizzly 350 (YFM350)**

1. **Performance Improvement** The BF0 carburetor kit is designed to enhance throttle response, power delivery, and overall engine performance by optimizing fuel-air mixture. Many users report noticeable gains in acceleration and top-end power, especially when paired with a tuned ignition system.

2. **Compatibility** This kit is specifically engineered for the Yamaha Big Bear 400, Kodiak 450, and Grizzly 350, ensuring a proper fit without major modifications. The stock mounting points and linkages are typically compatible, reducing the need for extensive rework.

3. **Durability and Quality** BF0 (Bauer Performance) is a well-regarded brand in the off-road and ATV performance market. Their carburetor kits are built to withstand high RPMs and rough terrain use, often featuring high-quality materials like aluminum and precision-machined components.

4. **Ease of Installation** Compared to aftermarket carburetors from lesser-known brands, the BF0 kit is relatively straightforward to install, especially for those with basic mechanical skills. The kit usually includes necessary gaskets, jets, and mounting hardware, simplifying the process.

5. **Tuneability** The BF0 carburetor offers adjustable features such as pilot and main jets, allowing for fine-tuning to match different fuel types, altitudes, or rider preferences. This flexibility can help optimize performance in various conditions.

6. **Reliability** Many users report fewer carburetor-related issues (e.g., flooding, lean conditions) compared to stock or poorly matched aftermarket carburetors. The BF0 design is often praised for its consistent fuel delivery under load.

7. **Cost-Effective Upgrade** While not the cheapest option, the BF0 kit provides a significant performance boost without requiring a full engine rebuild or expensive modifications. It strikes a balance between affordability and effectiveness.

---

1. **Learning Curve for Tuning** While the carburetor is adjustable, improper tuning can lead to poor performance, fuel waste, or even engine damage. Beginners may need to consult a professional or rely on pre-tuned jet settings provided by BF0.

2. **Potential for Overcomplicating the Engine** If the rest of the engine (ignition, exhaust, clutch) is not upgraded, the increased power from the BF0 carburetor may strain components like the stock flywheel, clutch, or transmission. This can lead to premature wear or failure.

3. **Fuel Quality Dependence** The BF0 carburetor performs best with clean, high-quality fuel. Using low-quality or contaminated fuel can clog jets or cause inconsistent performance, negating the benefits of the upgrade.

4. **Limited Stock Parts Availability** If something goes wrong with the BF0 carburetor (e.g., a cracked body, seized needle), finding replacement parts may be harder than sourcing OEM components. Stock Yamaha carburetors are more widely available in the aftermarket.

5. **Possible Throttle Hesitation at Low RPMs** Some users report that the BF0 carburetor can feel slightly less responsive at idle or low speeds compared to the stock unit, though this is often adjustable with jet changes.

6. **Cost of Additional Modifications** To fully realize the potential of the BF0 carburetor, you may need to invest in complementary upgrades such as a performance air filter, exhaust system, or ignition kit. These add to the overall cost.

7. **Mixed Reviews on Stock Linkage Compatibility** While generally compatible, some riders report that the stock throttle and choke linkages may not work perfectly with the BF0 carburetor, requiring minor modifications or aftermarket linkages.

---

The **BF0 6XWCZO carburetor kit** is a strong choice for Yamaha Big Bear 400, Kodiak 450, and Grizzly 350 owners looking to improve power and throttle response. It offers a good balance of performance gains, durability, and ease of installation, making it suitable for both casual riders and enthusiasts. However, it is not a "plug-and-play" solution proper tuning and complementary upgrades (if desired) are necessary to avoid issues and maximize benefits.

For riders who prioritize **reliability, adjustability, and noticeable performance improvements** without a full engine overhaul, the BF0 kit is a solid investment. Those who prefer minimal modifications or are unsure about tuning may find it less ideal. If budget allows, pairing it with a performance air filter, exhaust, or ignition system will further enhance results.

- You want a significant power increase with a relatively simple installation.

- You are willing to spend time tuning the carburetor or consulting a professional.

- You plan to upgrade other components (e.g., exhaust, clutch) to handle the added power.

- You prefer a reputable brand with a track record of durability.

- You want a more straightforward upgrade with minimal tuning required (e.g., a performance air filter or stock carburetor cleaning).

- You are on a tight budget and cannot invest in complementary mods.

- You prioritize stock-like reliability and simplicity over maximum power.

For most Yamaha Big Bear/Kodiak/Grizzly owners seeking a performance boost, the **BF0 6XWCZO carburetor kit is a highly recommended upgrade**, provided you approach it with the right expectations and are prepared to fine-tune it for optimal results.

Details:

Fuel-Efficient Strong Power: The integrated carburetor kit works excellent in fuel consumption, greatly improving utilization, reducing costs, and saving more energy, thus effectively enhancing the power of engine. Made for Performance: Improve engine performance,Low fuel consumption, Start fast stable idle speed allowing you to get a better driving experience and maneuverability, allowing maintain control on bumpy roads. Always the correct part.guaranteed Fitment.

Then you can load him into the car. Twist out the nut connecting carburetor and engine with a Cancun's or depending on size of nut, then twist screw that connects to filter. Package included. Specifications.

Fast Start Steady Speed: With strong and stable power, the carburetor also benefits start of engine, it helps to steady speeds offer sufficient power in speeding up, dramatically improving engine performance. Manufacturer. 2001 - 2007, for Yamaha Bruin 250 YFM 2005 - 2006, 350 2x4 4x4. Oil, unplug the oil pipe.

Finally, remove the throttle cable. Carburetor Kit For Yamaha Big Bear 400 YFM400 KODIAK 450 YFM450 Grizzly 350 NEW. Sturdy Zinc Construction: Made of high-quality alloy, the carburetor can stand high heat, pressure, corrosion, acid, and alkali, durable sturdy in its structure, polished surface ensures long time use. Quick, Simple.

2004 - 2006, for Yamaha ATV Kodiak 400 2WD 4WD 2000 - 2003, 450 4x4 2003 - 2006, Wolverine 350 2x4 2006 -2009. Fast Shipping. For Yamaha Big Bear 250 2007 -2009, for 400 YFM 2x4 4x4.

specifications carbthrotatv:

• for models: Yfm400, Yfm450, 400, 450, 350, Bear, Kodiak, Grizzly
• for makes: Yamaha
• brand: Bfo
• mpn: 6xwczo
• california prop 65 warning: California Prop 65 Warning
• choke type: Mechanical
• compatible make: For Yamaha
• compatible year: 2001-2009
• engine type: 4-stroke
• fit 2: For Yamaha Grizzly 350 2007-2011
• fit 3: For Yamaha Kodiak 400 Yfm400 2000-2006
• fit 4: For Yamaha Big Bear 400 2004-2006 Bruin 350
• fit 5: For Yamaha Grizzly 450 2007-2012
• fit 6: For Yamaha Wolverine 450 2007-2010
• fit for: For Yamaha Wolverine 350 2006-2009
• fitment type: Direct Replacement
• inner diameter: Intake Side
• items included: Gasket, Mounting Hardware
• machine type: Atv, Utv / Sxs
• manufacturer warranty: 2 Years
• material: Alloy
• note: No Instruction Included
• notice: This Is Aftermarket Replcement Part.
• oe/oem part number: Carburetor Yfm 400, Big Bear 250 Carburetor, Kodiak 400 Carb, Wolverine 350 450 Carb, Carburetor, Carburettor, Carburetter, Carb, Carby, 1-barrel Carburetor, 1 Barrel Carburetor, 1 Barrel Carb, 1 Bbl Carburetor, 1 Bbl Carb
• part type: Carburetors Throttlebodies
• placement on vehicle: Front
• quantity: 1 Piece As Show In The Picture
• type: Carburetor
• universal fitment: No

payments carbthrotatv:

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

seller carbthrotatv:

• rating: 99.4%
• # reviews: 1052
• city: Houston, Texas

general carbthrotatv:

• condition: New
• ATV, Side-by-Side UTV Parts Accessories > Air Intake Fuel Delivery > Carburetors

returns carbthrotatv:

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

offer carbthrotatv:

• sold: 0
• started: March 22, 2026
• best offers: True
• quantity: 10
• options: Ship-to-home
• availability: In Stock

shipping carbthrotatv:

• service: FedEx Ground / FedEx Home Delivery
• type: Fixed
• carrier: FedEx
• class: Standard
• cost: $0.00
• transit: 3-6 Days

Bfo 6XWCZO Is Similar To:

• Pqu12c Bfo Carburetor For Arctic Cat Atv Quad Carb (32.9% similar) For arctic cat DVX400 2004 -2007. Not fit for arctic cat 4X4 2006 , 400VP manual shift model's. Our carburetor has the absolute vacuum pipe, work properly. For arctic cat: 3470-023 3470-031 3470-035. New carburetor fit for arctic cat atv 350 366 400 carb 0470-737 2008 -2016 2017 . The Bfo PQU12C...(December 17th, 2021)
• I3lmeg Bfo Carburetor Carb For Polaris Scrambler Awd (39.4% similar) Carburetor fits for Polaris sportsman 500 4X4 2001 -2005 2010 2011 2012 . For Polaris atv. Scrambler 500 2007 . Scrambler 400 1999 . 1x carburetor for Polaris. Big boss 500 6X6 1998 -2002. Explorer 500 4X4 1997 . The Bfo I3LMEG is in new condition...(December 23rd, 2021)
• Vnd0xi Bfo Carburetor For Polaris Scrambler (39.1% similar) Carburetor fits for Polaris sportsman 500 4X4 2001 -2005 2010 2011 2012 . For Polaris atv. Scrambler 400 1999 . Scrambler 500 2007 . Magnum 4X4 1995 -1998. Carburetor replace for arctic cat 400 500 2X4 4X4 2002 2003 atv 0470-504 carb. The Bfo VND0XI is in new condition...(December 24th, 2021)
• Lxa8r6 Bfo Carburetor For Polaris Sportsman Duse Ho Rse (35.9% similar) Carburetor fits for Polaris sportsman 500 4X4 2001 -2005 2010 2011 2012 . Hawk eye 400 ho 2012 - 2014 . For Polaris atv. Sportsman 400 ho 4X4 2012 - 2014 . Sportsman 400 ho 4X4 SE 2014 . Sportsman 500 4X4 non-ho 1999 -2004. The Bfo LXA8R6 is in new condition...(December 25th, 2021)
• 837l1b Bfo Carburetor Fits For Honda Trx Sportrax Atv Carb Assembly (39.5% similar) For Honda TRX400 Sportrax 2001 -2006. For Honda TRX400 Sportrax 2007 -2015. 1 x carburetor. Carburetor carb kit for Honda ACT 350 x 350X 1985 -1986 with throttle base cover. Carburetor carb for Honda CRF250R 2004 -05 CRF250X 2004 -13 RMZ250 2004 -09 WR250. The Bfo 837L1B is in new condition...(January 3rd, 2022)
• M4terp Bfo Carburetor Carb Fit For Arctic Cat Atv Red Green (40.3% similar) New carburetor carb for arctic cat 250 300 2X4 4X4 2001 - 2005 atv 0470-448. For arctic cat atv 250 2X4 green 2002 - 2005 . For arctic cat atv 250 2X4 red 2002 - 2005 . For arctic cat atv 300 2X4 red 2001 - 2003 . The Bfo M4TERP is in new condition...(January 5th, 2022)
• 0ghn63 Bfo New Carburetor For Suzuki Quadrunner (35% similar) Carburetor carb for Suzuki quad runner LT160 LT-F160 1991 -2001 13200-02C03. For Suzuki quad runner LT160 2002 -2003. For Suzuki quad runner LT160E 1989 -1992. For Suzuki quad runner LT-F160 1991 -2001. Carburetor for Suzuki ALT125 LT125 1983 -1987 185 quad runner 13200-18912. The Bfo 0GHN63 is...(January 7th, 2022)
• 5qbr4g Bfo Carburetor Carb Fits For Arctic Cat Atv Red Green (40% similar) New carburetor carb for arctic cat 250 300 2X4 4X4 2001 -2005 atv. For arctic cat atv 250 2X4 green 2002 . For arctic cat atv 250 2X4 red 2002 . For arctic cat atv 250 2X4 green 2003 . For arctic cat atv 250 2X4 red 2003 . The Bfo 5QBR4G is in new condition...(January 12th, 2022)
• Rmzd9s Bfo Carburetor Carb Fit For Yamaha Grizzly Atv Raptor (50.7% similar) New carburetor for 2001 -2005 for yamaha for raptor 660 660R YFM660 yfm 660R carb. For yamaha for raptor 660 2001 -2005. 1x carburetor. Drive belt for yamaha atv YFM700 grizzly 700 fi 4WD 2007 -2020 B16-E7641-00-00. The Bfo RMZD9S is in new condition...(January 13th, 2022)
• Dixq6g Bfo New Carburetor Fit For Honda Atv Foreman Rancher Fe (42.1% similar) For Honda TRX350 rancher 350 2000 -2006. For Honda TRX350 footrace 1986 -1987. For Honda most year of Honda ACT 250, TRX250 TRX300 TRX350 TRX400 TRX450 etc. For Honda TRX350TE rancher 2000 -2006. For Honda TRX400FW foreman 1995 -2005. The Bfo DIXQ6G is in new condition...(January 14th, 2022)
• N8gct1 Bfo Carburettor Carb Fit Yamaha Rhino (40.3% similar) Fit for yamaha rhino 660 carburetor 2004 2005 2006 2007 YXR660. For yamaha rhino 660 2004 - 2007 . For yamaha grizzly 600 1998 -2001. For yamaha grizzly 660 2002 -2008. Ignition spark plug CID box 1995 for kodiak for yamaha YFM400FW 4GB-85540-00-00. The Bfo N8GCT1 is in new condition...(January 15th, 2022)