Shopping CartCLOSE
  • Your cart is empty.
Vertex 2-Stroke Piston
Vertex 2-Stroke Piston

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

Item #VER0003

Read More
58 Reviews
4.9 out of 5 stars
5 Star   53 4 Star   4 3 Star   0 2 Star   1 1 Star   0
Write a Review

Write your review and you'll automatically be entered in our monthly drawing. Include an image or video to DOUBLE your chances to win!

Write Your Review Write a review to win $500
All Reviews
Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Compressor was 180psi seems to be a good product

Still going strong almost 3 weeks later

Verified Purchaser
Morro Bay, Ca.
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Great Product!

Like that Vertex offers the "B" Piston for the YZ 250. Nice piece, well made, & I replace every 30 hours.

Macungie, PA
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 5/5
Excellent Kit

This is my second time using this kit for my 2012 KTM 150 XC. Beware that the wrist pin for the KTM 150 XC kit are real tight. You will need to use a light coating of grease to get the pin in the piston. Other than that, it's a nice kit. I got 60 hours on my first kit.

Verified Purchaser Top 250
Augusta,GA
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 4/5
Vertex 2-Stroke Piston KTM 125

Able to get a solid 25 hours of race plus trail riding out of this Piston. found no wear after 25 hours.

Verified Purchaser
chehalis wa
Durability 1/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 1/5
Good

bought it for 98 yz250 got my heat cycles in then rode down at the dunes blew up right when I got on the pipe I assume power valve hit and now cylinder is screwed but piston installed good had a nice coating and ring gap was spot on

Verified Purchaser
Georgia
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Great piston

Great piston, we always run vertex, never had any issues in any of our bikes.

Verified Purchaser
Prairieville, LA 70769, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Kx65 vertex piston

They’re the best pistons I ever owned. It came out looking new after 40 hours of riding and wasn’t even scratched up at all. Thumbs up

Alabama
Durability 4/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 5/5
Worked fine, so far so good

Bought this for my son’s “mini roost” 2006 KTM 65 sx. I bought the top end kit with the gaskets and the rod needle bearing. His bike was spooging semi-bad since we bought it used and recently became harder to start. It wouldn’t start without the throttle cracked open. It also lost power on top of each gear. This was my first top end replacement I’ve done myself. Everything fit perfectly. The clips were the hardest part. It took about 2 hours total tearing down and put back, but if I did it again I could cut that time in half. I was just being cautious. Anyway it cranked first kick with no throttle afterwards. Exhaust is clean with hardly any spooge at all. She’s back to picking the front tire off the ground through 4th gear with a 200 lb man on the seat!!!! BRAAAAAAAAAP!!!

Verified Purchaser
MD
Great Product

These pistons are just like the factory for KTM. I've been using them for the past 6 years whether it's for a 2 stroke or a 4 stroke.

Top 250 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

See 10 More Reviews
13 Questions
Answered:   10
Not Yet:   3
Dylan2015
Q: Is the vertex size b a 55.96 for ktm 150 xc
2 months 23 days ago
DaveGearhead
Top 10
2 months 23 days ago
A: According to Vertex, the measurement is a 55.96mm Piston Diameter.
Rahul
Q: I want flat top Piston for my KTM 112 model 2016
3 months 3 days ago
Michael
Top 10
3 months 3 days ago
A: Most modern day pistons are already flat top, that rounded top on pistons is almost obsolete at this point as the industry trends have leaned away from that, even in the two stroke engine. If you profile your bike in our system on our webpage you will see all the available options of pistons, and top end kits that will work for that bike.
TUTU
Q: Hi, i need a flat top piston, is it available.? Thanks,
4 months ago
Matt
Q: I need a 53.96 mm piston is this 53.96mm
1 year 8 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 9 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 11 months ago
hotrod
2 years 11 months ago
A: No you have to buy the gaskets separately . I use cometic gaskets .
MotoSportExpert
MotoSport Staff Expert
2 years 11 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.
JasonGraaf
Q: Drill holes?
Over 3 years 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
Over 3 years ago
A: No you should not need to drill holes in the Vertex Piston for your CR125.
Chandler
Q: Same size as OEM?
Over 3 years ago
I have a 1998 kx125, would this fit the stock cylinder head? Is it the same size as OEM?
MotoSportExpert
MotoSport Staff Expert
Over 3 years 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
MotoSport Staff Expert
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
MotoSportRyanT
MotoSport Staff Expert
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).
FD3S
Over 4 years ago
A: No it does not come with gaskets. I recommend the OEM gaskets or Athena.
Bunker
Over 4 years ago
A: No you need to get gasket kit as well
rc5695
Top 250 Verified Purchaser
Over 4 years ago
A: No gaskets included with this kit. You'll need a top end gasket kit as well.
Docproc
Over 4 years ago
A: Mine did nor
1 - 10 of 13
Fitment
See all bikes that this part fits...
See Fitments
# Part Numbers
Product Variant Manufacturer Part #
Stock Bore, A Piston N/A
Stock Bore, Single Ring A Piston N/A
Stock Bore, A Piston 23928A
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 CD Piston 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, B Piston 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
+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
Stock Bore Single Ring 23621050
Stock Bore AB Piston 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