Pro X Piston Kit

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Pro X Piston Kit
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Pro X Piston Kit

Our Price: $35.15$165.99

MSRP: $51.47 - $188.18 - You save up to $22.19 (12% off)

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Additional Videos

Pro X 4 Stroke Piston

Pro X 2 Stroke Piston

How To - Hone A Cylinder

How To Measure Your Dirt Bike's Piston To Cylinder Wall Clearance

RM YouTube Channel

Details

    If you’re looking for a cast piston that runs like a top and slides like it’s on ice, pick up a Pro X Piston Kit for you bike, UTV, or ATV.

    Pro X pistons are the premier cast piston made from a specialized low-expansion, low-friction aluminum alloy, commonly used by Japanese OEM engine manufacturers to give the piston an incredibly low co-efficient of friction. For you, this translates to a cast piston perfect for 2 strokes and 4 strokes that has the durability of a forged piston but at a much lower cost. Certain models come with a tin-based skirt coating that reduces wear during and after the wear-in process. This black coating also comes in handy during engine servicing since any excess wear to the piston skirt or cylinder wall will be very apparent in the wear patterns of this coating.

    Pro X uses the best materials available along with innovative designs to give you pistons that are tailor made to the unique requirements of your machine. So if you’re worrying about Pro X Piston Kits being a good fit for you, don’t. Pro X has you covered.

    Specs:
  • Kit includes piston, piston rings, wristpin, and circlips
  • Does not include wristpin bearing for 2 strokes
  • High silicon content aluminum alloy piston
  • Some models include tin-based anti-friction skirt coating
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Pro X Piston Kit Reviews

Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
 
4.5 / 5.0
155 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
117
20
8
2
8
Value
4.8 / 5
Durability
4.6 / 5
Fitment
4.8 / 5
Performance
4.8 / 5
Recommend it?
Yes (75)
No (2)
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
I had no issue installing this piston. Works and runs great
I had no issue installing this piston. Works and runs great
December 10, 2018
Powersvile, MO, US
Purchased
3 weeks ago
Value
1 / 5
Durability
1 / 5
Fitment
1 / 5
Performance
1 / 5
Recommend it?
No
Porky
I bought this for my 300TE Husqvarna. When I took this piston out of the box, my first thought was, this feels heavy. I put it on the scale with the shock piston and it was 1/2 oz heavier, which doesn't sound like much, but percentage wise it was more than 5% heavier. That is very bad news for engine performance. I sent it back.

-m-2018 HUSQVARNA TE 300--
December 5, 2018
St George, UT, US
Age: 45-64
Purchased
3 weeks ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Pro X Piston Kit
OEM quality top end kit. I have used these kits multiple times with success. It doesnt not include wrist pin bearing.
November 26, 2018
Upland, CA, US
Purchased
7 months ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Pro x piston
Great piston for the money went together super easy bike runs like brand new

-m-2000 HONDA CR125R--
November 1, 2018
Bourbon , IN, US
Age: 25-44
Purchased
1 month ago
Gender:
Male
Weight:
221 - 250 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Good pistons, great price.
Pro X is who makes most OEM 2 stroke engine components for Japan. Their quality is top notch and I've never had an issue running them.

-m-2004 HONDA CR250R--
October 17, 2018
Fillmore, UT, US
Age: 25-44
Purchased
3 months ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
No compliants
Easy to install, instructions were detailed. The bike runs well now.
October 11, 2018
Spanish Fork, UT, US
Purchased
2 months ago
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Decent piston
Holds up to the abuse of a 125

-m-2005 SUZUKI RM125--
October 2, 2018
Jamestown, IN, US
Age: 15-24
Purchased
2 months ago
Gender:
Male
Weight:
101 - 130 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Durability
4 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
KTM 50SX
My first time replacing my sons top end on his 50sx. Super happy with this pro X Piston Kit. Couldn't see the difference from the OEM parts
September 19, 2018
Port Orchard, WA, US
Purchased
3 months ago
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Got a non running ‘02 yz250f running and went in great
September 12, 2018
Spring, TX, US
Age: 15-24
Purchased
3 months ago
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Very good for price
Ive had this piston since I bought my bike, and have put 68 hours on so far, at a track, and it has held up pretty well.

-m-2003 HONDA CR125R--
August 24, 2018
Mira Loma, CA, US
Age: 15-24
Gender:
Male
Weight:
131 - 160 lbs.
Height:
5'10 - 6'0
Each question or answer submitted enters you into a:
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 17 questions Browse 17 questions and 31 answers
Is the pro x piston a forged or cast piston?
JOHN D on Dec 25, 2016
BEST ANSWER: This is a cast piston.
What is a or b piston kit. Mean for pro-x????
A shopper on Aug 20, 2016
BEST ANSWER: Hey there,

The manufacture measures the bore from the factory and provides a letter to represent the size. For example, "A" would be smallest within the manufactures tolerances and "B" or "C" would be larger sizes. The manufacture will usually stamp the cylinder with the size. The recommendations I received are to go up one letter to account to wear and tear. However, that's not official, just a recommendation that was given to me.
How do I know if I need new piston?
Richard M on Feb 11, 2018
BEST ANSWER: 1.Pitting/damage to top of piston, 2.scoring/gouging/damage to sides , 3.mics out of bore tolerance, 4.sleeving or overboring cylinder
I have a rm85 with a locked kick start I'm jus trying to find what could it be ?
shaun w on Aug 22, 2017
BEST ANSWER: If there is metal in the transmission oil you will need to take the right side cover off and see what is stopping the starter lever. if the piston is seized in the cylinder, the top end will need to be removed and repaired as needed.
Does your Pro X Piston Kit come with a Wrist Pin and Wrist Pin Bearing?
Jeremy T on Feb 7, 2018
BEST ANSWER: yes but i recommend purchasing the oem bearing, the difference in quality is clearly visible
I am planning on ordering this kit for my 2000 ktm sx250. This kit doesn't come with the wristpin bearing , correct? Will the specific piston for my bike come with the black coating around the sides or not for my specific bike??
Brian P on Feb 24, 2018
BEST ANSWER: No wrist pin bearing or black coating on the kit for my 250 exc
What to do when blown motor?
Randy G on Dec 14, 2017
BEST ANSWER: If it’s the top end you can have it bored and sleeved, if it’s the bottom end they can be rebuilt but it is time consuming and slightly costly.
What is standard bore size for a 2001 125 yz ?
A shopper on Jun 22, 2017
BEST ANSWER: Stock bore size on yz 125 is 53.94mm. Check ring gap per manual. If it is offered go with a B size since your bike is old you'll have a tighter fit.
I need piston prox size B Ford 2009 ktm 300.
you have it available?

I need piston pro x B d'Or 2009 ktm 300.you have it available?

.thank you
A shopper on Nov 14, 2018
BEST ANSWER: I checked into this for your and this is a size B piston for your machine.
will this piston work in a 2013 Husaberg te250?
A shopper on May 28, 2018
BEST ANSWER: Yes, you will just need to enter in your machine in the drop down boxes above the product image.
How come it doesn't give me the options for a kx100 ?
A shopper on Oct 7, 2017
BEST ANSWER: Unfortunately, we do not carry this piston kit for your machine. If you let me know what year your KX100 is I can check our inventory for you.
will this piston for my 2004 suzuki eiger LTF400F?
A shopper on Aug 7, 2017
BEST ANSWER: Unfortunately, we do not carry this piston for this machine.
It is compatible with the motorcycle KTM 250 EXC-F 2013?
Luis V on Apr 20, 2017
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2017 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
Is this a "c" piston?
Skip N on Apr 4, 2017
BEST ANSWER: What machine is this for?
Will this work on my Yz85?
A shopper on Dec 26, 2016
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2017 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
Does it come with gaskets?
A shopper on Dec 5, 2016
BEST ANSWER: No, gaskets are not included with this kit.
So what is the size of an "A" piston for a 2005 CR 250R ?
I have the stamp of "B" on the cylinder and the piston I ordered/rec is a standard 66.36mm, will this work or do I need to order a different size for "B"?
CHARLES S on Oct 19, 2016
BEST ANSWER: The diameter of the OEM A piston is 65.9mm. This kit should work with your cylinder as long as the ring end gap measurement is correct.
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