YZ250 YZ 250 72mm Big Bore Ported Cylinder Machined Head Complete Top End Kit
YZ250 YZ 250 72mm Big Bore Ported Cylinder Machined Head Complete Top End Kit
YZ250 YZ 250 72mm Big Bore Ported Cylinder Machined Head Complete Top End Kit

YZ250 YZ 250 72mm Big Bore Ported Cylinder Machined Head Complete Top End Kit

Regular price$1,475.00
Shipping calculated at checkout.

  • 72mm Stage 2 ported big bore cylinder
  • Wiseco or Wossner 72mm forged piston
  • Nitrite coated piston rings
  • Armorglide skirt coating
  • Chrome wristpin
  • Circlips
  • Powervalve machined for 72mm big bore
  • CW cylinder head machined for 72mm bore
  • Wristpin bearing
  • Head stud kit
  • Maxlock cylinder to case allen head stud kit
  • Spark plug


This part is compatible with 25 vehicle(s)
Notes Year Make Model Submodel
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 --
2011 Yamaha YZ250 Team Yamaha
2010 Yamaha YZ250 --
2009 Yamaha YZ250 --
2008 Yamaha YZ250 --
2007 Yamaha YZ250 --
2006 Yamaha YZ250 --
Notes Year Make Model Submodel
2005 Yamaha YZ250 --
2004 Yamaha YZ250 --
2003 Yamaha YZ250 --
2002 Yamaha YZ250 --
2001 Yamaha YZ250


 *Warranty: We stand behind all parts we sell 100%.  Everything we sell has been tested hundreds if not thousands of times and when installed and tuned correctly they work over 99% of the time.  Part failures happen, but it is rare that it is not due to being installed incorrectly.  If after installation there is an issue contact us for a warranty return.  This product is NOT DIY.  Over 99% of people in the world are not qualified to build an engine, and it is the responsibility of the person assembling and tuning the engine to make sure everything works correctly.  It requires special tools and has to be done 100% correct.  Many parts must be measured down to .01”.  We ALWAYS STRONGLY recommend parts be installed by a qualified, experienced mechanic.  Warranty does not cover failure that is a result of improper installation, tuning, break in, or misuse.   STUD WARRANTY: If for any reason a stud fails during use, not installation, we will send a completely new stud kit.  No other parts or any labor are included, and it can not be converted to a refund or discount on any order.  Studs must be returned to us for inspection first.  ALPHA CUB WARRANTY: If your Alpha Cub cylinder fails for any reason not related to installation, tuning, break in, or misuse we will fix the cylinder free of charge.  If it can not be fixed we will supply you with a new one.

We ship next day most of the time. Modquad parts are shipped Monday-Thursday. Engine Kits are 3-5 business days.

We don't do backorder! If your items has already sold you will be notified immediately and you money refunded on the spot.

Sold items are removed daily.

If you see it on this website, it is 100% in stock unless it just sold before you clicked buy.

If you call we answer, if you text we respond, if you have a question we respond. Sometimes we sleep so it could be next morning but we will respond.

Thank you for shopping with us! We appreciate you!

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Cut em Up!

Dune Goons Rider ~ Breanna
Showing her personal style and cutting the shirts up to her liking. We don't mind one bit! Cut em Up!