93-01 Yamaha YZ80 YZ85 85cc Cylinder Piston Gasket Top End Kit 4ES-11311-30-00
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Fitments:
Fit for Yamaha YZ80 1993 - 2001
Fit for Yamaha YZ85 2002 - 2018 (does NOT fits 2019 and later models)
Replacement Part Number:
4ES-11311-20-00, 4ES-11311-30-00 # Cylinder(YZ80)
5PA-11311-20-00, 5PA-11311-30-00 # Cylinder(YZ85)
4ES-11351-00-00 # Cylinder base gasket
4ES-11631-01-A0, 5PA-11631-00-D0 # Piston
4ES-11633-00-00 # Pin, piston
43K-11611-00-00 # Piston ring
93450-16115-00 # Circlips, piston(2)
93210-56459-00 # O-ring seal
93210-84724-00 # O-ring seal
93310-21417-00 # Needle bearing(14 x 18 x 16.5 mm)
Features:
This kit is designed to fit Yamaha YZ85 and will also fit Yamaha YZ80 models.
Kit includes cylinder, piston, rings, pin, o-ring, bearing, clips & base 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.
Kit is for standard bore size - 47.50 mm.
8.2:1 Compression ratio.
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: 85cc
Bore Type: Stanard Bore
Bore Size: STD 47.50mm
Stroke: 47.80mm
Thread: 6.5mm
Package Includes:
1x 47.5mm cylinder
1x Piston(STD)
1x Piston ring
1x Wristpin
1x Circlip(2)
1x Cylinder base gasket
1x Needle bearing
1x O-Ring #1
1x O-Ring #2
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.
Shipping:
Free Shipping
Handling time: Ship within 24 hours
Delivery Time: 3-7 business days
Warranty:
1. Condition: 100% Brand New
2. Warranty Period: 1 Years
3. 24-Hour Support: Provide you with timely after-sale support
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Customer Reviews
I put this top end on, started first crank, I rode the heck out of it the first ride. Runs great. Literally can’t beat the price . If it blows up in 6 months I would still be happy , an order another kit
Solid top end honestly. Gap the rings properly and you will have no issues. For the money it’s fine.
got it in today, expecting somthing to be broken or missing but nope, came well packaged and with all parts as described, comparing it to the oem cylinder and other parts can hardly tell the difference, just the head is different color
excellent quality and parts arrived as shown in picture
Did not receive part
Used this kit for a top-end rebuild on my bike. The piston and gasket fit perfectly, and installation was straightforward. The engine runs smoothly now with more power and efficiency. The quality of the parts is top-notch, and I’d definitely recommend it
What a brilliant way to breath new life into a Smokie old bike. The simplest way to fix a shed full of old quads
Everything fit perfectly—cylinder, piston, rings. Engine runs way smoother now, and I’ve had zero issues. Gasket sealed well, no leaks.