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Vertex 4-Stroke Piston Kit - Stock Bore
Vertex 4-Stroke Piston Kit - Stock Bore

$135.97 - $348.35
10% Off - Save up to $15.93
Rating: 4.6 out of 5 stars

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      Item #VER0005

      9 Reviews

      4.6 out of 5 stars
      •   7 reviews
      •   0 reviews
      •   2 reviews
      •   0 reviews
      •   0 reviews

      All Reviews

      Motoboy832

      Verified Purchaser
      1 year 5 months ago J-Ville Ohio
      5 out of 5 stars
      Durability
      5/5
      Ease of Installation
      5/5
      Performance
      5/5
      Power
      5/5
      Style
      5/5
      Great product

      I have been running Vertex products for a while now and have had nothing but good things to say about their stuff. Bike feels fresh again and the added compression seems to have given it a little more bark. Awesome stuff as expected from Vertex

      rich

      1 year 7 months ago johnson creek
      3 out of 5 stars
      Expensive

      I bought stock piston with rings ,wrist pins for 80.00

      Carlsonc

      Over 4 years ago
      3 out of 5 stars
      Durability
      3/5
      Ease of Installation
      4/5
      Performance
      5/5
      Style
      4/5

      bzsskibum

      Verified Purchaser
      Over 5 years ago
      5 out of 5 stars
      Durability
      5/5
      Ease of Installation
      5/5
      Performance
      5/5
      Power
      5/5
      Style
      5/5
      Good so far

      so far so good, could feel the power difference. I ride a 2006 ktm 250 sxf. the only problem I had was with the cam chain tightener. if you are reinstalling one of them make sure you follow instructions on line.. you can do some real damage to your bike if its in wrong. there is a set of steps to follow to preload the spring before instillation. Good luck

      Chad

      Verified Purchaser
      Over 6 years ago Tifton, GA, USA
      5 out of 5 stars
      Durability
      5/5
      Ease of Installation
      5/5
      Performance
      5/5
      Power
      5/5
      Style
      5/5
      Vertex piston

      This piston kit restored the power and compression and was a breeze to install

      Greelz

      Verified Purchaser
      Over 6 years ago
      5 out of 5 stars
      Durability
      5/5
      Ease of Installation
      5/5
      Performance
      5/5
      Power
      5/5
      Style
      5/5
      Really nice.

      This vertex piston made it easy. I got the kit and everything was there a, tolerances we right on, and it was clean. I would use this anytime.
      I ride a crf 450r.

      Randog

      Verified Purchaser
      Over 7 years ago Camden OH
      5 out of 5 stars
      Durability
      5/5
      Ease of Installation
      5/5
      Performance
      5/5
      Power
      5/5
      Style
      5/5
      Very pleased

      One season with this top end and so far so good. Still hits hard!

      Trackster1

      Over 7 years ago Redding, CA
      5 out of 5 stars
      Don't Make A Mistake

      I have talked to many people who have paid big bucks for a tricked out piston, only to find it unbalanced the motor, or alters the power too radically. These pistons have developed a good reputation as reliable pistons, close to OEM specs.

      TFerguson08

      Top 100 Contributor
      Over 7 years ago Bismarck, ND
      5 out of 5 stars
      Impressed!

      got this piston for my crf250 and planned on it only lasting me a few hours 40 hours later on it still running strong and showing no sign of wear. plus it was super easy to install and anyone with some mechanical knowledge can do it. Highly recommend vertex!

      13 Questions

      • Answered:   13
      • Not Yet:   0

      Question asked by Guspsoras

      Question: Will this fit a 2004 wr450f? The piston looks like it was designed for a 4 valve engine and mine is 5
      Question asked 2 months 26 days ago
      Question answered by Paul
      User's contributor status: Top 1
      Question answered 2 months 26 days ago
      Answer: Please disregard our photo of the Vertex piston. The photo shown may or may not be the unit specific to your motorcycle or ATV.
      If you correctly profile your motorcycle, including the model year, we will send you the specific unit to precisely fit your 2004 WR450F.

      Question asked by Rorey

      Question: I have a 2005 yz 250f would the stock bore or 13.5;1 make more power
      Question asked 2 years 1 month ago
      Question answered by David
      User's contributor status: Top 10 Contributor
      Question answered 2 years 1 month ago
      Answer: No power gain with a stock bore piston.

      Question asked by Jonny

      Question: What all comes in the Gasket kit for my 2011 KTM 250 sxf
      Question asked 2 years 3 months ago
      Question answered by Isaac
      User's contributor status: Top 10
      Question answered 2 years 3 months ago
      Answer: For a 2011 KTM 250SXF
      1 - Head gasket.
      1 - Base gasket.
      1 - Exhaust gasket.
      1 - Cam chain tensioner gasket.
      1 - Cam chain tensioner O-ring.
      1 - Cam chain tensioner seal.
      1 - Cam chain tensioner bolt seal.
      4 - Valve stem seals.
      1 - Oil plug O-ring.

      Question asked by Jonny

      Question: What all comes with the Kit?
      Question asked 2 years 3 months ago
      I have a 2011 ktm sxf 250 4 stroke what all comes with the kit for my bike??
      Question answered by robert
      User's contributor status: Top 10 Contributor
      Question answered 2 years 3 months ago
      Answer: The kit will include a piston, rings, cir-clips, piston pin and a top end gasket kit.

      Question asked by conor

      Question: Stock bore and stock bore compression13:5:1
      Question asked 2 years 11 months ago
      The 2008 yz250f was stock with 13:5:1 compression so what is the difference between the stock bore and stock bore with compression13:5:1
      Question answered by jbam19
      User's contributor status: Top 100 Contributor
      Question answered 2 years 11 months ago
      Answer: Double check the drop down options, Vertex offers 2 pistons for the 2008 yz250f that we carry the stock bore which is 13.5:1 and a higher 13.9:1 compression piston. If you are seeing stock bore and a second 13.5:1 not the 13.9:1 just give us a call and we will gladly get you all set up with the piston you are looking for.

      Question asked by Jesse

      Question: 2012 Honda CRF250R Compression question?
      Question asked Over 4 years ago
      While I was on Vertex's website looking at all the different piston options, they only sell 13.2:1, 14.1:1 & 14.6:1 compression ratio pistons for the stock bore size. My question is your website says its 13.6:1 for the high compression piston when Vertex don't even make one currently. So is it a typo error?
      Question answered by MotoSportExpert
      User's contributor status: MotoSport Staff Expert
      Question answered Over 4 years ago
      Answer: Yes for your 2012 Honda CRF250R the High Compression Piston Kit (23561B) would be 14.1:1 compression ratio.

      Question asked by Klemen

      Question: Gasket kit includes?
      Question asked Over 4 years ago
      Question answered by MotoSportExpert
      User's contributor status: MotoSport Staff Expert
      Question answered Over 4 years ago
      Answer: The Cometic Top End Kit (C3175-EST) for your Suzuki RMZ250 includes:

      1 - Head Gasket
      1 - Base Gasket
      1 - Exhaust Gasket
      1 - Cam Chain Tensioner O-Ring
      1 - Cam Chain Tensioner Bolt Washer
      4 - Valve Stem Seals

      Question asked by Momo319

      Question: Bore size
      Question asked Over 4 years ago
      So it says to measure the clearance of my cylinder before ordering to get the right size.. Do they sell a kit with different size Pistons if mine is out of clearance or do I have to bore or replate my cylinder to replace the top end?
      Question answered by MotoSportExpert
      User's contributor status: MotoSport Staff Expert
      Question answered Over 4 years ago
      Answer: Yes there are different size pistons we can order to fit your bike. If the part is available through one of our suppliers, we would be happy to order it for you. Please contact one of our sales professionals to inquire about special orders and availability.
      Dirt Bike / ATV: 1-888-676-8853

      Question asked by Jbrunet47

      Question: Would i have to run race gas with a high comp piston on a 2008 rmz250 or could I get away with 91?
      Question asked Over 4 years ago
      And is reliability an issue with this high comp piston or is it a thing where if u keep up on it you'll be ok?
      Question answered by MotoSportExpert
      User's contributor status: MotoSport Staff Expert
      Question answered Over 4 years ago
      Answer: Race gas is recommended.

      Question asked by Tyler

      Question: Stock compression of my bike is 13.8.1, this piston only goes to 13.2.1, do they make the right one for my bike?
      Question asked Over 4 years ago
      Question answered by MotoSportExpert
      User's contributor status: Expert MotoSport Staff
      Question answered Over 4 years ago
      Answer: Both Vertex and Wiseco do not offer a 13.8:1 ration piston kits. If you would like to set it up to stock specs you can find the stock OEM parts in the OEM section here:
      http://www.motosport.com/dirtbike/oem-parts/kawasaki/2013/kx250f/cylinder~piston%28s%29

      Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
      1 - 10 of 13

      Fitment

      See all bikes that this part fits...

      # Part Numbers

      Gasket Kit
      Product Variant Manufacturer Part #
      Vertex 4-Stroke Piston Kit - Stock Bore C3267-EST, C3136-EST, C3268-EST, C3150-EST, C7978-EST, C3142-EST, C3054-EST, C3175-EST, C3406-EST, C3102, C3233-EST, C3051-EST, C3139-EST, C7096, C3066-EST, C7400, C7689, C3057, C7947, C7908-EST, C3395-EST, C3164-EST, C3428-EST, C7279, C3412-EST, C3263-EST, C7944, C3187, C7185, C3288-EST, C3047-EST, C3270-EST, C7688, C7044, C3201-EST, C7691, C3549-EST
      Piston
      Product Variant Manufacturer Part #
      +0.50mm 23103050, 23104050, 23162050
      +1.00mm 23103100, 23104100, 23162100
      11.7:1 Compression 23302B
      12.9:1 Compression 22983B
      B Piston 22814B, 23003B, 23113B, 23550B, 23561B, 23456B, 23759B, 23855B, 23961B, 22900B, 23304B, 23529B, 23730B, 23731B, 23856B, 23869B, 23962B, 23963B, 24080B
      B Piston 10.5:1 Compression 23163B
      B Piston 11.3:1 Compression 22951B
      B Piston 12.0:1 Compression 23455B, 23522B
      B Piston 13.0:2 Compression 23443B
      B Piston 13.2:1 Compression 23510B
      Stock Bore 23162, 23259B, 23566B, 23242A, 23543A, 22941C, 22942B, 23311B, 23564B, 23198B, 23377B, 23532B, 22805B, 23127B, 23391B, 22567A, 22605A, 22915B, 23562B, 22984B, 23103, 23104, 24018B, 24122B
      Stock Bore 11.0:1 Compression 23548B
      Stock Bore 11.5:1 Compression 23545B
      Stock Bore 11:1 Compression 23555B, 23329B
      Stock Bore 12.0:1 Compression 23340B
      Stock Bore 12.5:1 Compression 23857B, 23863B, 22969B
      Stock Bore 12.6:1 Compression 23647B
      Stock Bore 12.9:1 Compression 23378B
      Stock Bore 13.0:1 Compression 23551B
      Stock Bore 13.1:1 Compression 23546B, 23864B
      Stock Bore 13.2:1 Compression 23646B
      Stock Bore 13.3:1 Compression 23114B, 23236B
      Stock Bore 13.4:1 Compression 23544A
      Stock Bore 13.5:1 Compression 23444B, 23549B, 22896B, 23861B, 23941B, 22889B, 23563B
      Stock Bore 13.6:1 Compression 23739B, 23858B
      Stock Bore 13.8:1 Compression 23565B, 23733B, 23737B, 23873B, 23874B
      Stock Bore 13.9:1 Compression 23458B, 23567B, 23515B, 23394B, 23862B
      Stock Bore 13:1 Compression 23243A, 23199B, 23553B
      Stock Bore 14.0:1 Compression 23642B, 23736B, 23872B
      Stock Bore 14.2:1 Compression 23738B, 23942B
      Stock Bore 14.4:1 Compression 23954B
      Stock Bore 14.5:1 Compression 23732B, 23734B
      Stock Bore 14:1 Compression 23642A
      Stock Bore A Piston 23445A
      Stock Bore Pro 13.8:1 Compression 24092B
      Stock Bore Single Ring 13.5:1 Compression 22812B
      Stock Bore, A Piston 22982A, 23235A, 23641A, 23342C, 23623A
      Stock Bore, A Piston 13.2:1 Compression 23446A
      Stock Bore, B Piston 22982B, 23235B, 23342B, 23623B, 23641B
      Stock Bore, B Piston 13.2:1 Compression 23446B
      Stock Bore, B Piston/ Fitment 126 23445B

      California Proposition 65

      WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. For more information, go to www.P65Warnings.ca.gov.