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Vertex 2-Stroke Piston
Vertex 2-Stroke Piston

$47.25 - $197.96
10% Off - Save up to $21.99

Item #VER0003

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49 Reviews
4.9 out of 5 stars
5 Star   45 4 Star   3 3 Star   0 2 Star   1 1 Star   0
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All Reviews
Top 250 Contributor Verified Purchaser
Waynesburg, PA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Fits great

Seems to be working well. No issues so far

Ontario, Canada
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Awesome in my 04 rm 250

Brought back power and compression and made the bike a whole lot more fun to ride

Vertex 2-Stroke Piston
Verified Purchaser
Montevideo, Montevideo Department, Uruguay
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 4/5 Style 5/5
Piston vertex

Perfect match and good quality

Verified Purchaser
Tucson, AZ, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
After market piston

The best after market piston made, High quality...

Verified Purchaser
Durability 4/5 Ease of Installation 4/5 Performance 4/5 Power 4/5 Style 4/5
2000 KTM 65sx

installed easy and didn't need ring gap adjustment. Product looked nice.

House Springs, MO
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
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.

Vertex 2-Stroke Piston
Vertex 2-Stroke Piston
Verified Purchaser
Athens Ga
Durability 4/5 Ease of Installation 4/5 Performance 4/5 Power 4/5 Style 5/5
Very safe purchase

Very dependable

Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
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.

Verified Purchaser
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 5/5
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

On the bike
After getting the circlip on
Missouri, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Pleased so far

I am pleased with how well this fits and the bike runs very well

See 10 More Reviews
10 Questions
Answered:   8
Not Yet:   2
Matt
Q: I need a 53.96 mm piston is this 53.96mm
1 year 3 months ago
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.
hotrod
2 years 6 months ago
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
Over 4 years ago
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
Over 4 years ago
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
Over 4 years ago
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.
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
Over 5 years ago
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...
See Fitments
# 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
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