Dirt Bike
Seems to be working well. No issues so far
Vertex
Vertex 2-Stroke Piston
Vertex 2-Stroke Piston
Description
Item #VER0003
49 Reviews
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All Reviews
1 month 25 days ago
Waynesburg, PA
Fits great
4 months 28 days ago
Ontario, Canada
Awesome in my 04 rm 250
Brought back power and compression and made the bike a whole lot more fun to ride
4 months 29 days ago
Montevideo, Montevideo Department, Uruguay
Piston vertex
Perfect match and good quality
Over 6 months ago
Tucson, AZ, USA
After market piston
The best after market piston made, High quality...
1 year ago
2000 KTM 65sx
installed easy and didn't need ring gap adjustment. Product looked nice.
1 year 1 month ago
House Springs, MO
Good Piston
I read that Vertex is the OE supplier so I've been using them. Price is good, they last longer than OE recommendation, I'll keep buying them.
1 year 3 months ago
Athens Ga
Very safe purchase
Very dependable
1 year 5 months ago
Vertex 2-Stroke Piston
Very good piston. Have ran many pistons and this is the most durable piston I have used. Is strong in high RPM range.
1 year 5 months ago
Great way to freshen a bike up
Man I would of never guessed how worth it it is to do a top end. Parts shipped fast and on time, got here well packaged and nothing missing. I checked all the tolerances and everything was spot on, nothing to lose or too tight. The ring end gap was perfect to ktm's specs. The only reason I give it 4 stars on ease of use is because I spent 20 minutes on the first circlip, then I spent 1 and a half hour on the other one trying to get it on while on the motor. Other than that my bike has a whole lot more compression, starts first kick every time, and has a noticeable power gain. Very pleased and would definitely buy again. Bike was a 2013 ktm 85sx
1 year 7 months ago
Missouri, USA
Pleased so far
I am pleased with how well this fits and the bike runs very well
10 Questions
Matt
Mike
Q: Just received my piston kit for my sons new 2017 KTM 65SX. The website said "Standard Bore". When I got the piston it says "Size CD".
1 year 4 months ago
Will this work for his bike? Never had it apart so I'm not sure what the bore diameter is....
shopdad
Q: Does this come with head and cylinder gaskets?
2 years 6 months ago
MotoSportExpert
MotoSport Staff
Expert
2 years 6 months ago
A: No, this would be for the piston kit only (no gaskets). Gaskets can be found in our OEM section for your bike.
http://www.motosport.com/dirtbike/oem-parts/honda/2002/cr80
Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
http://www.motosport.com/dirtbike/oem-parts/honda/2002/cr80
Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
hotrod
A: No you have to buy the gaskets separately . I use cometic gaskets .
JasonGraaf
Q: Drill holes?
2 years 9 months ago
For Wiseco pistons, the included instructions specify that 2 small holes must be drilled in the piston skirt to lubricate the exhaust bridge (2004 cr125). The Vertex piston instructions do not specify that this should be done, but I am cautious of leaving the exhaust bridge unlubricated. Should I drill the holes or not?
MotoSportExpert
MotoSport Staff
Expert
2 years 9 months ago
A: No you should not need to drill holes in the Vertex Piston for your CR125.
Chandler
Q: Same size as OEM?
2 years 11 months ago
I have a 1998 kx125, would this fit the stock cylinder head? Is it the same size as OEM?
MotoSportExpert
Expert
MotoSport Staff
2 years 11 months ago
A: Yes this would be stock bore for your 1998 KX125. Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct piston for your bike. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Corey
Q: Stock Bore "B"?
Over 4 years ago
My cylinder is stamped with a "B" on my 2011 YZ250. This is a stock bore, correct? The Vertex 2-Stroke Piston- Stock Bore is the correct size?
MotoSportRyanT
Expert
MotoSport Staff
Over 4 years ago
A: Yes, since this is a forged piston instead of a cast piston like your OEM piston was it does not have the "A, B, C" designation. It will work perfectly fine with the "B" cylinder on your YZ250 as forged pistons actual form to fit the shape/size of the cylinder when they are run through a heat cycle or break in period.
Aaron
Q: Does the kit come with all the gaskets needed?
Over 4 years ago
Docproc
A: Mine did nor
MotoSportRyanT
Expert
MotoSport Staff
Over 4 years ago
A: This is actually just the Piston, Rings, Wrist Pin and Circlips. It would not include the Gaskets. We do offer several Piston Kits that would include the gaskets (see product recommendations).
Bunker
A: No you need to get gasket kit as well
RyanK
Top 250 Contributor
Over 4 years ago
A: No gaskets included with this kit. You'll need a top end gasket kit as well.
FD3S
A: No it does not come with gaskets. I recommend the OEM gaskets or Athena.
cr250chick
Top 500 Contributor
Q: 2003 CR250 Piston fitment
Over 4 years ago
I have an 03 CR250 and I just installed the Vertex piston (Stock Bore) that I bought here a few months ago. After only a few hours of riding I pulled the top and noticed it has been rubbing against the cylinder in the front where the exhaust ports are. I have an A cylinder and noticed the piston has a B on the top. When I ordered it there was only one option when it came to piston size but I'm guessing this is the wrong size for my cylinder. Is there an option for an A piston from vertex?
MotoSportExpert
Top 1 Contributor
Over 4 years ago
A: Vertex only list one piston size for you 2003 CR250 bike: 66.35mm
Be sure to ALWAYS measure the cylinder bore before ordering a piston for your bike and refer to an OEM service manual for the proper specs required.
Be sure to ALWAYS measure the cylinder bore before ordering a piston for your bike and refer to an OEM service manual for the proper specs required.
mikep
Q: I need to find the type 2 size piston due to the larger cylinder where can i find it?
Over 4 years ago
MotoSportExpert
MotoSport Staff
Over 4 years ago
A: Not sure what you mean by "type 2" piston. If you can call us with what the current bore size is of the cylinder we can get the corresponding piston for you. Stock would be 54mm on this model.
dogman
Q: One side of my motor is good one side is bad can i use this piston for the bad side or do i need both
Over 5 years ago
kawasaki76
A: It would be better to do both sides so that it would be a fresh rebuild and it would save you time and money. You might replace one side and then a few days or something the other side will go bad.
MotosportStaff
MotoSport Staff
Over 5 years ago
A: I suggest doing both top ends at the same time to start off fresh. Replacing one piston and not the other will cost you more time and money in the long run.
Fitment
See all bikes that this part fits...
# Part Numbers
| Product Variant | Manufacturer Part # |
|---|---|
| Stock Bore, A Piston | N/A |
| Stock Bore | 22499B |
| Stock Bore | 22863B |
| Stock Bore | 22189B |
| Stock Bore | 22685C |
| Stock Bore | 22995B |
| Stock Bore | 23140C |
| Stock Bore | 22153B |
| Stock Bore | 22387B |
| Stock Bore | 22581B |
| Stock Bore | 22809B |
| Stock Bore | 23133B |
| Stock Bore | 22447 |
| Stock Bore | 22860B |
| Stock Bore | 22502B |
| Stock Bore | 22803B |
| Stock Bore | 22498B |
| Stock Bore | 22712B |
| Stock Bore | 23004B |
| Stock Bore | 22244B |
| Stock Bore | 22521B |
| Stock Bore | 22795B |
| Stock Bore | 23124B |
| Stock Bore | 22813CD |
| Stock Bore, CD Piston | 23429CD |
| Stock Bore | 22481CD |
| Stock Bore | 23430CD |
| Stock Bore | 23294B |
| Stock Bore, A Piston | 22991A |
| Stock Bore, A Piston | 23383A |
| Stock Bore, Double Ring | 22926B |
| Stock Bore | 22650B |
| Stock Bore | 22909B |
| Stock Bore | 23121B |
| Stock Bore | 23630B |
| Stock Bore | 23375B |
| Stock Bore | 22877B |
| Stock Bore | 22216B |
| Stock Bore | 22652B |
| Stock Bore | 22998B |
| Stock Bore | 22386B |
| Stock Bore | 22540B |
| Stock Bore | 22585B |
| Stock Bore | 22854B |
| Stock Bore | 22868B |
| Stock Bore | 22224B |
| Stock Bore | 22441B |
| Stock Bore | 22520B |
| Stock Bore | 22806B |
| Stock Bore | 23119B |
| Stock Bore | 22356B |
| Stock Bore | 22154B |
| Stock Bore, B Piston | 22584B |
| Stock Bore | 1 |
| Stock Bore | 22569 |
| Stock Bore | 22151B |
| Stock Bore | 22215B |
| Stock Bore | 22245B |
| Stock Bore | 22248B |
| Stock Bore | 22293B |
| Stock Bore | 22361B |
| Stock Bore | 22442B |
| Stock Bore | 22459B |
| Stock Bore | 22532B |
| Stock Bore | 22541B |
| Stock Bore | 22600B |
| Stock Bore | 22601B |
| Stock Bore | 22646B |
| Stock Bore | 22649B |
| Stock Bore, Single Ring | 22925B |
| Stock Bore | 23457B |
| Stock Bore | 23928B |
| Stock Bore, A Piston | 22584A |
| Stock Bore | 24101B |
| Stock Bore +5mm Long Rod | 23607 |
| Stock Bore | 23614 |
| +0.50mm | 22447050 |
| +1.00mm | 22447100 |
| +1.50mm | 22447150 |
| +2.00mm | 22447200 |
| +0.25mm | 22568025 |
| +0.50mm | 22568050 |
| +0.75mm | 22568075 |
| +1.00mm | 22568100 |
| +1.50mm | 22568150 |
| +2.00mm | 22568200 |
| +0.25mm | 22569025 |
| +0.50mm | 22569050 |
| +0.75mm | 22569075 |
| +1.00mm | 22569100 |
| +1.50mm | 22569150 |
| +2.00mm | 22569200 |
| +0.50mm Long Rod | 23607050 |
| +1.00mm Long Rod | 23607100 |
| +1.50mm Long Rod | 23607150 |
| +2.00mm Long Rod | 23607200 |
| +2.50mm Long Rod | 23607250 |
| +0.50mm | 23614050 |
| +0.50mm Single Ring | 23621050 |
| Stock Bore | 22481AB |
| Stock Bore, B Piston | 22991B |
| Stock Bore Single Ring | 22996B |
| Stock Bore Single Ring | 23331B |
| Stock Bore, B Piston | 23383B |
| Stock Bore, AB Piston | 23429AB |
| Stock Bore | 23430AB |
| Stock Bore | 23599B |
| Stock Bore 14.0:1 Compression | 23605B |
| Stock Bore Single Ring | 23637B |
| Stock Bore Stroker | 23879B |
| Stock Bore | 24105B |
| Stock Bore | 24106AB |
| Stock Bore | 24107AB |
| Stock Bore 13.5:1 Compression | 23756B |
