Get your dirt bike firing on all cylinders with the Yamaha YZ250 YZ 250 Top End Rebuild Kit. This complete top end overhaul breathes new life into your 2-stroke with upgraded performance parts ready to rip up the track.
Cylinder, Piston, Gaskets, Spark Plug
Give your YZ250 a new lease on life. This top-shelf rebuild kit includes a OEM-spec Nikasil-plated cylinder, Wiseco forged piston, rings, wristpin, circlips, and Cometic gaskets - everything you need for a complete top end rebuild. Factory-fresh power and performance is just a wrench turn away.
Rebuilding the top end restores compression and horsepower to keep your YZ250 ripping laps. This kit is made for the weekend warrior who wants their trusty steed to keep charging year after year. Breathe new life into your 2-stroke and save big over buying brand new OEM parts.
Year | Make | Model | Submodel | Notes |
---|---|---|---|---|
2024 | Yamaha | YZ250 | -- | |
2024 | Yamaha | YZ250 | 50th Anniversary Edition | |
2023 | Yamaha | YZ250 | -- | |
2023 | Yamaha | YZ250 | Monster Energy Yamaha Racing Edition | |
2022 | Yamaha | YZ250 | -- | |
2022 | Yamaha | YZ250 | Monster Energy Yamaha Racing Edition | |
2021 | Yamaha | YZ250 | -- | |
2020 | Yamaha | YZ250 | -- | |
2019 | Yamaha | YZ250 | -- | |
2018 | Yamaha | YZ250 | -- | |
2017 | Yamaha | YZ250 | -- | |
2016 | Yamaha | YZ250 | -- | |
2015 | Yamaha | YZ250 | -- | |
2014 | Yamaha | YZ250 | -- | |
2014 | Yamaha | YZ250 | Team Yamaha | |
2013 | Yamaha | YZ250 | -- | |
2013 | Yamaha | YZ250 | Team Yamaha | |
2012 | Yamaha | YZ250 | -- | |
2012 | Yamaha | YZ250 | Team Yamaha | |
2011 | Yamaha | YZ250 | -- |
Year | Make | Model | Submodel | Notes |
---|---|---|---|---|
2011 | Yamaha | YZ250 | Team Yamaha | |
2010 | Yamaha | YZ250 | -- | |
2009 | Yamaha | YZ250 | -- | |
2008 | Yamaha | YZ250 | -- | |
2007 | Yamaha | YZ250 | -- | |
2006 | Yamaha | YZ250 | -- | |
2005 | Yamaha | YZ250 | -- | |
2004 | Yamaha | YZ250 | -- | |
2003 | Yamaha | YZ250 | -- | |
2002 | Yamaha | YZ250 | -- | |
2001 | Yamaha | YZ250 | -- | |
2000 | Yamaha | YZ250 | -- | |
1999 | Yamaha | YZ250 | -- |
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My 400ex has never sounded better. New tensioner, guides, and chain fixed the noise. Metal bottom end gasket was cool too, didn't rip while working on it.
Thank you for your positive review! We're glad to hear that the TRX400EX Cam Chain Tensioner & Wiseco Heavy Duty Cam Chain Kit was able to fix the ticking noise on your 400ex. We agree, these small maintenance steps can make a big difference in the overall performance and sound of your vehicle. We appreciate your feedback and hope to continue providing quality products for your ATV. Happy riding!
Well my mechanic said it was some good parts in the box. I'll let you know how the rebuild goes. Great I hope
I haven’t received them yet
Trevor, thank you for your 5 star review. We appreciate that. Rest assured I just checked your tracking info and UPS says they will arrive today between 1:30 & 3:00 pm. Your going to love the Lectron Carburetors!
Great quality and fast shipping thanks
I received the wrong center crankcase gasket
Hi there, thank you for bringing this to our attention. We apologize for the inconvenience of receiving the wrong gasket. We take pride in our products and want to ensure that our customers receive the correct items. We sell countless TRX400EX engine kits and we always ship the same gasket every time. In situations like this, we encourage our customers to reach out to us so we can rectify the issue. We would have been more than happy to ship out the correct gasket right away if you had sent us a picture of the wrong one. Please don't hesitate to contact us for any further assistance. Thank you for choosing our product.