2001-2013 Yamaha WR250F 77mm Stock Bore Cylinder Piston Top End Rebuild Kit 5XC-11311-20 5NL-11351-00
2001-2013 Yamaha WR250F 77mm Stock Bore Cylinder Piston Top End Rebuild Kit 5XC-11311-20 5NL-11351-00
SKU:Moto587-A180
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77mm Stock Bore Cylinder Piston Gasket Top End Rebuild Kit For Yamaha YZ250F WR250F 2001-2014
Features:
If your cylinder blows through, the compression is too low, or even a piston seizure has occurred, then this kit is exactly the right thing for you.
Kit includes cylinder, forged piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured).
Nickel Silicon Carbide plated for long life.
Piston 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 - 77.0 mm x 53.6 mm stroke, 16mm steel piston pin.
Compression Ratio: 12.7:1.
This kit is excellent as a low-cost replacement for defects in the original cylinder.
Specifications:
Condition: Aftermarket 100% Brand New
Quantity: 1 Set
Material: Aluminum, Steel
Displacement: 249cc
Engine type: 4-Stroke
Bore Type: Standard Bore
Bore diameter: 77.00mm
Stroke: 53.6 mm
Pin diameter: 16mm
Pin Length: 38.5mm
Replacement Part Number:
Cylinder: 5XC-11311-20, 5XC-11311-10, 5XC-11311-01, 5XC-11311-00, 5UL-11311-00, 5NL-11311-00
Cylinder Base Gasket: 5NL-11351-00
Cylinder Head Gasket: 5NL-11181-00
Piston (Std): 5NL-11631-10, 5NL-11631-20
Pin, Piston: 5NL-11633-00
Piston Ring Set (Std): 5NL-11603-00
Circlips, piston (2): 93420-16086
Exhaust Gasket: 5NL-14613-00
Chain Tensioner Gasket: 4FM-12213-00
Fits Make/Model/Year:
Fit for Yamaha YZ250F 2001-2013
Fit for Yamaha WR250F 2001-2013
(Compatibility Chart is for Reference ONLY!!!)
(Please Compare with Your faulty unit and the image we provided to Decide Fitment)
Package Includes:
1x Cylinder
1x Piston
1x Piston Ring Set
1x 16mm Wristpin
1x Circlip(2)
1x Cylinder Base Gasket
1x Cylinder Head Gasket
1x Exhaust Gasket
1x Chain Tensioner Gasket
(Comes exactly as pictured.)
Note:
Carefully compare to your old parts to be sure this is the correct part for your machine.
The product on offer is an accessory or spare part and thus is not an original product of the vehicle manufacturer.
The name of the vehicle manufacturer is stated only as an indication of the determination of the product being offered as an accessory or spare part, to clarify, for which vehicle the product on offer Fits.
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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Got this cylinder kit (with piston and top end gaskets) for my 300 SX/XC—just a standard one, not big bore. But man, it’s held up amazing even through all the rough use I’ve put it through! No issues so far, works like a charm. Super happy with how durable it is.
Quick and efficient delivery! The package was sturdy and the contents were well protected. The kit appears complete with all necessary parts. A hassle free experience overall.
I received the item, it was packaged well and was as described. There was only one issue,the hole where the cam tension rod goes was just a bit to small. I tried installing with 2 different lubes, wiggled and twisted as much as it would allow and still couldn't get it to pass through the cylinder. I tried the old tension rod thinking it could have been the new rod. It wouldn't pass through either. Rather than return the item and wait for a new one with possibly the same issue, I decided to drill it out one size larger. I would highly recommend not doing this unless you have a drill press and feel comfortable using it. After drilling and cleaning it very well, the rod passed through, was installed and all is well.
Brought this for 1996 Yamaha badger 80 every fit right up and the the rings were already gapped correctly out of the box. This set up makes 40 psi more compression than the old one
Super fast shipping! The rebuild kit arrived in perfect condition. All gaskets fit my TRX400EX perfectly. Very happy!

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