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Pro X Piston Kit

4.7 (9 reviews)
Regular: $56.60 - $218.95 Save up to 10%!
Sale: $50.95 - $197.95
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How To Video - Dirt Bike 4 Stroke Top End Installation

Product Details


   Features
      -The smart solution to save money on engine repairs
      -Manufactured in Japan and designed to be OEM replacements
      -Cast from a high-silicone content aluminum alloy to meet or exceed OEM specifications
      -CNC-machined to extremely close tolerances
      -Pistons supplied in a kit package that includes rings, wrist pins and circlips
      -Rings and pistons are interchangeable and compatible with OEM pistons and rings

Specifications and Options

Brand Pro X
Bore Size (mm) 42.96, 44.45, 44.46, 44.96, 44.97, 44.98, 46.94, 46.95, 46.96, 46.97, 46.98, 47.44, 47.45, 47.46, 47.5, 47.94, 47.95, 47.96, 48, 48.45, 48.46, 48.47, 48.5, 49, 50, 50.5, 51, 51.5, 53.94, 53.95, 53.96, 53.97, 53.98, 54.2, 55.94, 55.95, 55.96, 64, 64.25, 64.5, 64.75, 65, 65.25, 65.5, 65.94, 65.95, 65.96, 66, 66.25, 66.34, 66.35, 66.36, 66.37, 66.38, 66.5, 66.57, 66.94, 66.95, 66.97, 67, 67.25, 67.35, 67.36, 67.5, 67.75, 67.95, 67.96, 67.97, 68, 85.94, 85.95, 89, 89.25, 89.5, 89.75, 89.96, 90, 90.5, 91, 94.95, 94.96, 96.94, 89.97 mm
Oversize 1.00 mm, 0.50 mm, 2mm, Stock, 0.0007, 0.001, 0.0008, 0.0012, 0.08, 0.07, 0.1, (.010) .25mm, (.020) .50mm, (.030) .75mm, (.040) 1.00mm, (.050) 1.25mm, (.060) 1.25mm, (.060) 1.50mm, Standard
Compression 12.2:1, 12.5:1, 13.5:1
Notes A Piston, B Piston, C Piston, Double Ring, High Compression, Single Ring

Q & A

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Browse 8 questions Browse 8 questions and 14 answers
Why did you choose this?
Bike Bandit Store
I have used Pro-X piston kits in the past and had okay luck I've done three or four pistons on my bike but all of them have had a small crack when I have tour them down been lucky !!!
Robert E on Mar 22, 2019
pro x is a quality product.
Scott M on Aug 15, 2018
I have used Pro-X piston kits in the past and had okay luck I've done three or four pistons on my bike but all of them have had a small crack when I have tour them down been lucky !!!
Robert E on Mar 22, 2019
price was the lowest I found.
kelly r on Dec 2, 2018
pro x is a quality product.
Scott M on Aug 15, 2018
Budget priced for a rebuild
Matt B on Jan 7, 2018
Great deal
Michael S on Aug 10, 2017
Best piston out there, like OEM.
D on Nov 1, 2016
price was the lowest I found.
kelly r on Dec 2, 2018
Budget priced for a rebuild
Matt B on Jan 7, 2018
Does the pro x piston kit come with gaskets?
Philly b on Mar 22, 2018
BEST ANSWER: Thank you for the question Philly! the Pro X Piston Kit does not have gaskets included. Please let us know if there is anything else we can do for you by contacting us by email at [email protected], Live Chat or by phone toll free at 888-339-3888. We are more than happy to help.
I just got a 02 KX 85-A for my son to mess around on needs some tlc would not start got fuel / spark - rebuilt 28 mm carb so I checked compression only 30 psi not knowing if it was bored or not or what brand piston it has I just would like to put new rings on it to see if it going to run without taking it to Kawasaki dealer$$$$ I only payed $ 40.00 for it clear title and everything is there needs a few things but I don’t want to buy the wrong parts and not be able to return them or have the bike or me bleeding $$$$$ would love some solid in put on my next step?? Thx M.A
Michael A on May 15, 2018
BEST ANSWER: Hello Michael, the normal usable compression according to Kawasaki is 119-185 psi. I hate to say it, but with a 30 psi reading it sounds like you'll definitely have to bore your cylinder along with replace the piston and rings. We recommend having the work done by a certified Kawasaki technician. Please let us know if there is anything else we can do for you by contacting us by email at [email protected], Live Chat or by phone toll free at 1-888-339-3888. We are always more than happy to help.
I have a 2007 KLR650 and need a new over sized piston (050) sent to Khartoum, Sudan pronto. How much would it cost and how long would it take to get here?
trent b on Mar 21, 2018
BEST ANSWER: Thank you for your question Trent. Unfortunately we do not ship to Khartoum, Sudan. Please let us know if there is anything else we can do for you by contacting us by email at [email protected], Live Chat or by phone toll free at 1-888-339-3888. We are always more than happy to help
while i was riding the other day,my 08 125 sx lost compression.when i took it apart there were pretty big scratches,but only on one side(a little to the right of the exaust ports).the rest of the piston/cylyinder was perfect.the engine was broken in properly 10 hrs ago when we redid it last.why would this be?
Kenster on Jul 23, 2012
BEST ANSWER: Thanks for writing in to BikeBandit.com. For legal reasons, BikeBandit.com does not offer mechanical/technical advice.
We do offer Repair Manuals that may provide the info you need to help you solve your problem.
what is included in the piston kit?
I need a 10000 oversize piston for an 'o2 blaster
Frank on Jan 18, 2011
BEST ANSWER: Thanks for your question!

In the piston kit it will include the Piston, Rings, Wrist Pin, & Circlips.
does it fit piston and rings for a ATC 250 MOD 87?
Pollo on Jan 28, 2010
BEST ANSWER: Thanks for your question! Please let us know if you have the SX or ES model and we will be happy to check into this information for you.
the pro x piston kit, does it come with 2 pistons for a banshee or just 1?
rutay on Dec 22, 2009
BEST ANSWER: Thanks for your question! With the Pro X Piston Kit that your looking at these will be sold per piston, you would need to get a quantity of two .

Reviews

4.7 / 5.0
9 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
6
3
0
0
0
Would you recommend
Yes (8)
Would you recommend
Yes
Fit perfectly
Install went smoothly I have always had good luck with Pro-X Pistons and rings caught just in time it had a crack in it in the same place as the last piston I replaced only time will tell
April 25, 2019
Purchased
2 months ago
1999 KX250- great quality replacement
December 15, 2018
Purchased
7 months ago
Would you recommend
Yes
Good-quality, great price, like riding a new bike
August 9, 2018
Purchased
10 months ago
Would you recommend
Yes
Very nice piston kit, just like oem piston
March 22, 2018
Purchased
1 year ago
Would you recommend
Yes
Love these pistons
Great product. Fits well and doesn't cost what the other brands want. Used 3 so far back to back with no issues.
July 4, 2017
Purchased
over 2 years ago
Would you recommend
Yes
Good Deal
Nothing fancy about this piston kit. It is just a good price for these precision made components. Piston, ring, and pin.
All fit perfect and the bike engine is now running very normal.
June 27, 2017
Purchased
over 2 years ago
Would you recommend
Yes
Gotta love the reviews
As always getting the job done with the right parts... And it never fails as long as u don't make a mistake repairing..
October 1, 2015
Would you recommend
Yes
2003 CR 250 eating YOUR exhaust port
The perfect combination of performance and reliability.
If u have a nikasil barrel bore it out to fit iron sleeve combined with this PRO-X piston kit, I can personally guaranty u wont go wrong.
Mine lasted almost 1300 riding hours
July 30, 2015
Would you recommend
Yes
Great piston with two rings
Rebuilt a 2000 cr125r. The pro x Piston was coming out of the cylinder....had to buy thicker base gasket(or 2 oem). It runs awesome now. Perfect size for oem bore that's not scratched.
March 11, 2015
Rider Reviews - Summary
Overall Review:
4.7
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