Wiseco Pro-Lite 4-Stroke Piston

$151.99 - $219.99
$55.77 - $186.99
5.00 out of 5 stars
Fitment Expert:
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Wiseco Pro-Lite 4-Stroke Piston
Wiseco Pro-Lite 4-Stroke Piston
  • Description
  • Reviews (4)
  • Q&A (7)
  • Fitment

Wiseco leads the performance aftermarket by producing the highest quality forged pistons in the U.S.A. Wiseco is unique because they forge all of their own pistons in-house, and produce all of their own forge tooling in the U.S.A. This allows Wiseco to control all aspects of their manufacturing process from raw bar to skirt coating on the finished parts.

  • Much stronger than stock. Forged using the highest quality materials available resulting in a piston that provides excellent performance and durability.
  • Tight tolerances for quiet running. Featuring a race-ready dome finish with smooth edges for improved combustion flow.
  • More hours with peak performance between piston changes. The rings, wrist pin, and circlips are manufactured by Wiseco under their strict quality standards to make sure every piston kit fits correctly, ensuring top performance and long-lasting durability are achieved.
  • The Wiseco Pro-Lite Piston includes: piston, ring(s), wrist pin, and circlips.

Extreme racing conditions demand the strength and toughness that only forged pistons can offer. Compared to cast pistons, forgings are tougher and more durable, and will stand up to the abuse that high performance motorsport applications require. Most castings are brittle, have no grain structure and tend to fail catastrophically when the material yield strength is exceeded. Forgings have condensed grain that is aligned to the features of the part, which produces higher mechanical properties, and resistance to impact and fatigue. Each forging is designed to optimize the strength-to-weight ratio, and maximize performance.

Note: Image is for reference ONLY, actual contents will vary based on fitment.

5.0 out of 5 stars (4)
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1-4 of 4
Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: Bristol, VA, USA
Jordan
Piston

Went in easy into a cylinder that had 2 pistons before it and not even honed once. Raced hard and still running strong.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: Austin, TX
race271
Quality Product from Wiseco as Always

You tell right away from looking at the piston that it is high-quality stuff. It comes with all necessary rings, pin and clips, but of course it's always a good idea to grab a gasket kit to go along with it. There was nothing difficult about install and it all fit and worked as hoped. My crf250r is 7 years old (basically a dinosaur in terms of motocross), and still had the stock top end in it. Needless to say the piston added a huge breath of life into the bike, and it is running like it was fresh off the factory. I highly recommend Wiseco pistons for anyone in the market - they are about as high quality as you can find, and much cheaper than some competitors.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: Wayne, IL
Matt
Great as always

Installed in a 2005 YZ250F. Fix as expected, bike ran great, fantastic Wiseco product like always.

Overall 5 out of 5 stars
Location: hesperia, ca
hondaracer744
Kicking yo

gone 5 dune sessons and 3 races on the same piston and still runing strong

1-4 of 4
Total Questions (7)
Questions with answers:
  7
Questions without answers:
0
1-7 of 7
bubba Over 7 months ago Location: PA
What is the compression ratio of this piston for a 1994 yamaha warrior 350 and what gaskets come with the kit?
MotoSport Staff Expert
Over 7 months ago
MotoSportExpert
The Wiseco Pro-Lite standard bore Piston for your 1994 Yamaha Warrior 350 (4419M08300) would be 10.25:1 compression ratio. This would be for the piston kit only, no gaskets. The Cometic Top End Gasket Kit can be found below. Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
hondo400ex Over 9 months ago Location: Ohio, USA
Will this fit my 01 honda 400ex?
Expert MotoSport Staff
Over 9 months ago
MotoSportExpert
Yes, the Wiseco Pro-Lite 4-Stroke Piston will fit your 2001 Honda TRX400EX (stock bore). Just be sure to correctly select the Year/Make/Model of your ATV before ordering so we can be sure to send you the correct piston for your ATV. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
zackry Over 11 months ago Location: Moncks Corner, SC 29461, USA
Will this be the right bore for my 2008 yz450f? and will there be a power difference between this piston and the stock yamaha piston?
just curious. I believe i need to change my piston but not sure.. i got a little smoke out my pipe and it takes a few kicks to start and not sure if its my jetting.. please help
Top 50 Contributor Top 1 Contributor
Over 10 months ago
MotoSportExpert
The Wiseco Pro-Lite Piston kits are a high quality aftermarket replacement piston for most popular model bikes. They are offered in stock sizes, big bore sizes and optional compression ratios. The stock bore and stock compression for you 2008 YZ450F Yamaha is 95.00mm/ 12.5:1 Unfortunately we at Motosport.com are not able to give you repair advice. We highly suggest that you purchase an OEM service manual for your machine and refer to it to answer your repair questions. If you need more assistance, please consult a local repair shop to further assist you in your repairs. If you need parts to assist in your repairs, we are happy to assist you with your parts order.
dman 1 year 5 months ago
Is this a 3 ring piston?
Expert MotoSport Staff
1 year 5 months ago Location: Portland, OR, USA
MotoSportRyanT
Yes. The Wiseco Piston for your Yamaha YZ250F would come with 2 compression rings and the oil scraper ring set.
Lilhoppi84 1 year 6 months ago
Is the AMA legal to run in stock AMA classes?
MotoSport Staff Expert
1 year 5 months ago Location: Portland, OR, USA
MotoSportRyanT
Yes, as long as you keep the bike at the stock bore size, it is legal to run a Wiseco Piston in the Stock AMA Classes.
cole 2 years 1 month ago
Can I use this piston with stock connecting rod?
MotoSport Staff
2 years 1 month ago Location: Portland, OR, USA
MotoSportExpert
Yes, this is designed to be an OEM replacement piston kit and will work with all stock engine parts including the stock crank and rod.
mxmx Over 6 years ago
Dose this come with?
every thing in the pic..like the rings and stuff
MotoSport Staff
Over 6 years ago Location: Tualatin
JesseC
they come with the piston, ring(s), circlips and depending on what model it's for, they usually come with the wrist pin.
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