SKU: 4170495020

1987-1999 Yamaha Big Bear 350 4x4 (YFM350FW) Cylinder Piston Gasket Top End Kit Set 1UY-11310-03 93450-19095

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Description

1987-1999 Yamaha Big Bear 350 4x4 (YFM350FW) Cylinder Piston Gasket Top End Kit Set 1UY-11310-03 93450-1909583mm Cylinder Jug Piston Gasket Kit For Yamaha Big Bear, Bruin, Grizzly, Moto 4, Raptor, Warrior, Wolverine 350 Features: Kit includes piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured). Cast piston has super high silicone content for additional strength. Piston skirts are Molybdenium Teflon coated to minimize resistance wear and provide extended life. Piston dome is anodized for superior heat resistance and longer

83mm Cylinder Jug Piston Gasket Kit For Yamaha Big Bear, Bruin, Grizzly, Moto-4, Raptor, Warrior, Wolverine 350

Features:
Kit includes piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured).
Cast piston has super-high silicone content for additional strength.
Piston skirts are Molybdenium Teflon coated to minimize resistance/wear and provide extended life.
Piston dome is anodized for superior heat resistance and longer lifespan.
The gaskets use performance materials to increase durability and provide greater reliability.
Includes all gaskets pictured to rebuild top end.
Kit is for standard bore size - 83.00 mm.
All of the components within this kit are bolt-on ready for a hassle free installation.

Specifications:
Condition: Aftermarket 100% Brand New
Quantity: 1 Set
Piston Material: Forged Aluminum
Actual Displacement: 348cc
Bore Type: Stanard Bore
Bore Size: STD 83.00mm
Stroke: 64.50mm
Piston Diameter: 82.95mm
Piston Height: 58.80mm
Pin Height: 65mm
Pin Diameter: 19mm

Replacement Part Number:
Cylinder: 1UY-11310-03, 5YT-11310-00-00, 4WU-11310-00-00
Cylinder Base Gasket: 4KB-11351-00
Cylinder Head Gasket: 1UY-11181-01
Chain Tensioner Gasket: 3GD-12213-00
Piston: 1YW-11631-01-Y0, 1UY-11631-01-Y0, 5UH-11631-00-C0
Pin, piston: 55V-11633-00
Ring Set, piston: 4GB-11610-00
Circlips, piston: 93450-19095

Fitments:
Fit for Yamaha Moto-4 350 (YFM350ER) 1987 - 1995
Fit for Yamaha Big Bear 350 4x4 (YFM350FW) 1987 - 1999
Fit for Yamaha Big Bear 350 2x4 (YFM350U) 1996 - 1999
Fit for Yamaha Bruin 350 4x4 (YFM350FA) 2004 - 2006
Fit for Yamaha Bruin 350 2x4 (YFM350A) 2004 - 2006
Fit for Yamaha Grizzly 350 2x4 (YFM350G) 2007 - 2011
Fit for Yamaha Grizzly 350 4x4 (YFM350FG) 2007 - 2014
Fit for Yamaha Grizzly 350 4x4 IRS (YFM350FGI) 2007 - 2011
Fit for Yamaha Warrior 350 (YFM350X) 1987 - 2004
Fit for Yamaha Raptor 350 (YFM350R) 2004 - 2013
Fit for Yamaha Wolverine 350 4x4 (YFM350FX) 1995 - 2005
Fit for Yamaha Wolverine 350 2x4 (YFM350X) 2006 - 2009

(Compatibility Chart is for Reference ONLY!!!)
(Please Compare with Your faulty unit and the image we provided to Decide Fitment)

Package Includes:
1x 83mm Cylinder
1x Piston(STD)
1x Piston Ring Set
1x Wristpin
1x Circlip(2)
1x Cylinder Base Gasket
1x Cylinder Head Gasket
1x Chain Tensioner Gasket

Note:
Ring end gaps are checked prior to shipment for proper sizing.
Please check out the product and size fits your motorcycle or not before you purchase.

Warranty:
Returns: Customers have the right to apply for a return within 60 days after the receipt of the product
24-Hour Expert Online: Solve your installation and product problems

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 4170495020

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4.1 ★★★★★
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Robert Smith
Lake Worth, US
★★★★★ 5
Well made but on the small side. I recommend ordering one size bigger than your usual size
Size: Large, Color: Pure Black (Retro Rose)
The fit on this shirt ran slightly smaller for me being a slim fit, so I order the next size up. Getting the next size up gave me a perfect fit. The material is soft and comfortable. I will likely consider similar shirts in the future. I recommend the product.
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Reviewed in the United States on April 30, 2026
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Lauren
Port Orchard, US
★★★★★ 5
Cowboy shirt
Size: Large, Color: White
Good quality. Fit and finish seem nice for the price. Look like a cowboy! Yeee haaaaaw. Wrinkles easy in dryer, don’t let it sit for long.
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Reviewed in the United States on March 4, 2026
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Otis H.
Lake Worth, US
★★★★★ 4
Very nice shirt -Good Quality
Size: XX-Large, Color: Red (Retro Rose)
My husband is 6'1, weighs 178 pounds and normally wears a medium or large. Just for reference his pant size is a 32-34 depending on the brand. We ordered a large due to the fact the shirt appeared to be fitted more at the waist and from looking at the description I knew it would not have much stretch due to the satin type material. I was right. The large fit perfect and hung well. My husband use to be very large in shoulders and arms, but with age he has lost muscle mass, and recently lost a lot in his belly, so usually mediums fit perfect now. But when he put his large on, a medium would not have fit good to be comfortable & give proper fit in stomach area, so glad we went with the large. The shirt was purchased to go on a Virgin Cruise for Scarlett night, and he plans to wear black pants with it as in the picture the company posted, and this shirt will be perfect for that. It is a nice shirt, good quality, and if someone wanted it for an event/cruise or just for a night to dress up, especially for a Caribbean/Spanish or Latin dance theme, this shirt is a perfect look to me. Buy it, you will not be disappointed. He has not worn it yet, not washed it, but I would not put in it with other colors, may fade a little like reds do, and definitely, only dry on low/delicate. May need a pressing/steaming, but overall, it was not horribly wrinkled when we received it. A toss in the dryer may just do the trick. Was delivered on time as it said it would. Hope this info helps you.
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Reviewed in the United States on January 14, 2024
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Avery Hughes
Belleville, US
★★★★★ 5
Yeehaw!
I like this shirt. Very fancy yet western.
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Reviewed in the United States on January 20, 2026
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Amazon Customer
Dallas, US
★★★★★ 5
Great quality shirt, comfy, and loved the embroidery!
Size: X-Large, Color: Pure Black (Retro Rose), Size: X-Large, Color: Pure Black (Retro Rose)
Great quality shirt, especially for the price. The embroidery is fantastic. Ordered for a costume party, but is a great shirt for wearing out anytime.
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Reviewed in the United States on January 29, 2026

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