( Brand: Maxpeedingrods ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Color: Silver ), ( Compatible Year: 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1992, 1991, 1990, 1989, 1988, 1987 ), ( Compatible Year Range: 1987-2009 ), ( Custom Bundle: Yes ), ( Cylinder Bore Size: 83 Mm X 64.50 Mm ), ( Displacement: 348 Cc ), ( Engine Type: 4-stroke ), ( Features: Corrosion-resistant, Durable, Sealed ), ( Fitment 1: Fit For Yamaha Big Bear 350 4x4 ), ( Fitment 10: Fit For Yamaha Warrior 350 ), ( Fitment 11: Fit For Yamaha Wolverine 350 4x4 ), ( Fitment 12: Fit For Yamaha Wolverine 350 2x4 ), ( Fitment 2: Fit For Yamaha Big Bear 350 2x4 ), ( Fitment 3: Fit For Yamaha Bruin 350 4x4 ), ( Fitment 4: Fit For Yamaha Bruin 350 2x4 ), ( Fitment 5: Fit For Yamaha Grizzly 350 2x4 ), ( Fitment 6: Fit For Yamaha Grizzly 350 4x4 ), ( Fitment 7: Fit For Yamaha Grizzly 350 4x4 Irs ), ( Fitment 8: Fit For Yamaha Moto-4 350 ), ( Fitment 9: Fit For Yamaha Raptor 350 ), ( Important Notice: Package Included, Professional Installation Required ), ( Internal Cylinder Coating: No ), ( Manufacturer Part Number: H20XZW ), ( Manufacturer Warranty: 2 Years ), ( Material: Aluminum ), ( Mounting Style: Bolt-on ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part. ), ( Oe/oem Part Number: 1uy-11310-03-00, 4kb-11351-00-00, 93450-19095-00, 4gb-11610-00-00 1yw-11631-01-y0, 55v-11633-00-00, 1uy-11181-01-00, 5yt-11310-00-00 4wu-11310-00-00 ), ( Package Included: 1x Cylinder Block, 1x Piston, 5x Piston Rings, 2x Circlips, 1x Head Gasket, 1x Base Gasket, 1x Gasket Maker Threadlocker ), ( Piston: Cast Piston ), ( Piston Height: 58.8 Mm ), ( Piston Pin Diameter: 19 Mm ), ( Piston Pin Height: 65 Mm ), ( Quantity: As The Same As Picture ), ( Stroke: 64.50 Mm ), ( Surface Finish: Brand New ), ( Type: Cylinder Piston Top End Rebuild Kit ), ( Unit Type: Unit )
Review MAXPEEDINGRODS Cylinder Piston Top End Rebuild Set Yamaha Big fits BEAR YFM350 350 4X4 1987–1999
Introducing the Maxxispeedingrods H20XZW Cylinder Piston Top End Rebuild Set, specifically designed for the Yamaha Big Bear 350 YFM350 4x4 models produced between 1987 and 1999. This comprehensive rebuild kit includes all the essential components required to restore the top end of your engine to its original performance and efficiency.
The set includes high-quality, forged aluminum pistons that are precisely engineered to provide superior strength and durability. The pistons feature a unique design with optimized compression height, piston pin bore size, and skirt thickness to ensure a perfect fit and seamless integration with your engine.
Moreover, the H20XZW kit comes with piston rings that are made from high-tensile, heat-resistant material. These rings ensure a snug fit between the piston and cylinder wall, minimizing blow-by and combustion leaks, which in turn, enhances overall engine performance and fuel economy.
The kit also includes new cylinder heads, which are meticulously machined to ensure optimal combustion chamber volume and shape. The cylinder heads come with new valves, valve seats, and valve guides, ensuring proper valve function and sealing.
Additionally, the H20XZW set includes new piston pins, wrist pins, and connecting rods. These components are made from high-strength steel and are precisely measured to ensure a perfect fit and optimal engine performance.
Furthermore, the kit includes new cylinder gaskets, head gaskets, and crankcase gaskets, ensuring a leak-free engine rebuild and maintaining the integrity of the engine's seals.
Lastly, the Maxxispeedingrods H20XZW Cylinder Piston Top End Rebuild Set comes with all the necessary hardware, including new bolts, nuts, and studs, to ensure a successful installation and a secure fit of all the new components.
In conclusion, the Maxxispeedingrods H20XZW Cylinder Piston Top End Rebuild Set is a complete solution for rebuilding the top end of your Yamaha Big Bear 350 YFM350 4x4 engine, produced between 1987 and 1999. This high-quality kit includes all the essential components required to restore your engine to its original performance and efficiency, ensuring a smooth and enjoyable riding experience.
Maxxispeedingrods H20XZW Cylinder Piston Top End Rebuild Set for Yamaha Big Bear 350 (1987-1999): A Detailed Analysis
Introduction:The Maxxispeedingrods H20XZW cylinder piston top end rebuild set is designed for Yamaha Big Bear 350 models produced between 1987 and 1999. This kit includes new pistons, cylinders, rings, and other necessary components to rebuild the engine's top end. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this rebuild set.
Pros:1. High-quality components: Maxxispeedingrods is a well-known brand in the ATV aftermarket, and their H20XZW rebuild set uses high-quality materials to ensure durability and reliability.
2. Comprehensive kit: The kit includes all the necessary components to rebuild the top end of the engine, reducing the need for additional purchases.
3. Improved performance: A rebuilt engine can lead to improved performance, including increased horsepower and torque.
4. Cost-effective: Rebuilding the engine is generally more cost-effective than purchasing a new one, making this kit a worthwhile investment for those looking to save money.
Cons:1. Time-consuming: Engine rebuilds can be time-consuming and require a significant amount of labor, especially for those without mechanical experience.
2. Difficulty level: Engine rebuilds can be challenging, and the process may involve troubleshooting and problem-solving.
3. Risk of damaging other components: During the rebuild, there is a risk of damaging other engine components if proper care is not taken.
4. Potential for unforeseen expenses: While the rebuild kit includes most necessary components, there may be additional expenses, such as gaskets or seals, that are not included.
Conclusion:The Maxxispeedingrods H20XZW cylinder piston top end rebuild set for Yamaha Big Bear 350 (1987-1999) offers several advantages, such as high-quality components, comprehensive kit, improved performance, and cost-effectiveness. However, it also comes with some disadvantages, including time-consuming installation, difficulty level, risk of damaging other components, and potential for unforeseen expenses.
Recommendation:If you are mechanically inclined, have the time and patience for an engine rebuild, and want to save money compared to purchasing a new engine, then the Maxxispeedingrods H20XZW cylinder piston top end rebuild set is an excellent investment. However, if you lack mechanical experience or do not have the time to complete the rebuild, it may be more cost-effective to hire a professional or consider purchasing a rebuilt engine from a reputable dealer.
specifications atvsienna:
- for models: Yfm350, 350, 4x4, Bear
- for makes: Yamaha
- for years: 1987-1999
- brand: Maxpeedingrods
- california prop 65 warning: California Prop 65 Warning
- color: Silver
- compatible year: 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1992, 1991, 1990, 1989, 1988, 1987
- compatible year range: 1987-2009
- custom bundle: Yes
- cylinder bore size: 83 Mm X 64.50 Mm
- displacement: 348 Cc
- engine type: 4-stroke
- features: Corrosion-resistant, Durable, Sealed
- fitment 1: Fit For Yamaha Big Bear 350 4x4
- fitment 10: Fit For Yamaha Warrior 350
- fitment 11: Fit For Yamaha Wolverine 350 4x4
- fitment 12: Fit For Yamaha Wolverine 350 2x4
- fitment 2: Fit For Yamaha Big Bear 350 2x4
- fitment 3: Fit For Yamaha Bruin 350 4x4
- fitment 4: Fit For Yamaha Bruin 350 2x4
- fitment 5: Fit For Yamaha Grizzly 350 2x4
- fitment 6: Fit For Yamaha Grizzly 350 4x4
- fitment 7: Fit For Yamaha Grizzly 350 4x4 Irs
- fitment 8: Fit For Yamaha Moto-4 350
- fitment 9: Fit For Yamaha Raptor 350
- important notice: Package Included, Professional Installation Required
- internal cylinder coating: No
- manufacturer part number: H20XZW
- manufacturer warranty: 2 Years
- material: Aluminum
- mounting style: Bolt-on
- note: No Instruction Included
- notice: This Is Aftermarket Replcement Part.
- oe/oem part number: 1uy-11310-03-00, 4kb-11351-00-00, 93450-19095-00, 4gb-11610-00-00 1yw-11631-01-y0, 55v-11633-00-00, 1uy-11181-01-00, 5yt-11310-00-00 4wu-11310-00-00
- package included: 1x Cylinder Block, 1x Piston, 5x Piston Rings, 2x Circlips, 1x Head Gasket, 1x Base Gasket, 1x Gasket Maker Threadlocker
- piston: Cast Piston
- piston height: 58.8 Mm
- piston pin diameter: 19 Mm
- piston pin height: 65 Mm
- quantity: As The Same As Picture
- stroke: 64.50 Mm
- surface finish: Brand New
- type: Cylinder Piston Top End Rebuild Kit
- unit type: Unit
shipping atvsienna:
- transit: 4-7 Days
- class: Standard
- cost: $0.00
- service: Standard
- type: Fixed
seller atvsienna:
- # reviews: 29770
- rating: 99.2%
returns atvsienna:
- policy: Returns Accepted
- paid by: Seller
- time: 30 Days
payments atvsienna:
- credit card: Discover
- other
- wallet: Paypal
general atvsienna:
- ATV, Side-by-Side UTV Parts Accessories > Engines Engine Parts > Other Engine Parts
- condition: New
offer atvsienna:
- availability: In Stock
- options: Ship-to-home
- started: March 6, 2026
- best offers: True
- sold: 0
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