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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4.6 ★★★★★
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Jeanette's Mom
Charlottesville, US
★★★★★ 5
Works well when properly applied
Size: 3 Fl Oz (Pack of 1)
I try to always buy the highest SPF that I can find. This one fits the bill. If you apply it thoroughly all over and then reapply every few hours, you shouldn't get burned. I've worn it to the water park numerous times now. I have very sensitive skin, and it's given me no issues. I even put it on my face, just being careful not to get too close to my eye area. Once it absorbs into your skin, it doesn't feel too sticky like some other sunscreens can. Just be aware that it will leave a white residue on your bathing suit if you get it on there, but I've always been able to wash it out and that's a small price to pay for proper sun protection!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
M
Verified Purchase
Mr.Dependable:)
San Leandro, US
★★★★★ 5
Very good... with a comment.
Size: 3 Fl Oz (Pack of 1)
As a bald dude, I fine the fact that it is matt good. Check it before you leave or, if you use to much, looks like white face upon drydown and in dry areas. I like it. I do. And it protected me from the hot sun of the middle east. No burn. Just needs a second check after about 10 minutes. But very good at what it does!!!
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Reviewed in the United States on June 3, 2026
D
Verified Purchase
David Velasquez Henao
Birmingham, US
★★★★★ 5
Excellent product.
Size: 3 Fl Oz (Pack of 1)
Excellent product. The sun is extremely strong where I live, and I've been using this for several days now; it lasts a very long time on the skin. However, if you have very sensitive skin, I wouldn't recommend using it on your face—in my case, it caused a breakout. But for the neck, body, and arms, it’s excellent. I highly recommend it, and it doesn't leave a bad feel on the skin or an unpleasant smell. If you use it in the water, it is recommended to reapply every hour and 20 minutes, otherwise you might get sunburned.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
G
Verified Purchase
Glow
Lowell, US
★★★★★ 5
Daily Staple Sunscreen
Size: 3 Fl Oz (Pack of 1)
I’ve been really impressed with this sunscreen—it’s become a daily staple for my face and hands. The SPF 70 gives great peace of mind, especially with regular sun exposure, and it feels lightweight rather than heavy or greasy. It absorbs quickly and doesn’t leave that thick white cast, which is a huge plus for everyday wear. On my face, it layers well under makeup without pilling, and on my hands, it doesn’t feel sticky or transfer onto everything I touch. I also appreciate that it holds up well throughout the day without needing constant reapplication (unless I’m outside a lot). Overall, it’s a reliable, high-protection sunscreen that’s comfortable enough to use every day.
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Reviewed in the United States on April 28, 2026
S
Verified Purchase
SML
Port Orchard, US
★★★★★ 5
Best sunscreen
Size: 3 Fl Oz (Pack of 1)
My favorite sunscreen. Been buying if for 2 years and still a great product. It goes on easily and does not make your skin greasy or sweaty. It does not cause breakouts either.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026

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