Wiseco Pro-Lite High-Compression 4-Stroke Piston

Wiseco Pro-Lite High-Compression 4-Stroke Piston
Wiseco Pro-Lite High-Compression 4-Stroke Piston

$156.99 - $200.99
15% Off - Save up to $35.00

  • Description
  • 17 Reviews
  • 22 Questions
  • Fitment
Description Item #WCO000R

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.

Read More
17 Reviews
4.4 out of 5 stars
5 Star   16 4 Star   0 3 Star   2 2 Star   0 1 Star   0
Top 250 Contributor Verified Purchaser MotoSport Staff
Portland, OR, USA
Durability   Ease of Installation   Performance   Power   Style  
Wiseco for the win.

I put this bad boy in my 2007 crf450r and it rocks. best option for the money.

Durability   Ease of Installation   Performance   Power   Style  
Piston Kit

Im happy with the product although the wrist pin didnt come with the kit. when i opened the box full of parts the piston kit box looked like it was tampered with.

Top 500 Contributor

great piston increased horespower and increased engine feel, and not expensive at all

Madison, AL
Wiseco piston, first service Std Bore, CRF250R

I thought this was going to be a tough job, but found out it was easy. All the parts fit perfect, even the ring gaps were within specs and needed no filing. Bike started right up and is as strong as ever. Great product and will use it again.

Excellent Product

We just installed this item on our 08' YZ250F. Everything fit and worked very well. All items were in the box, so no mad dash to the Dealer for missing pieces... Very pleased, will buy again.

Top 250 Contributor
trumansburg, ny
Durability   Ease of Installation   Performance   Power   Style  

overall this is a great kit, the only issue i had was the lower oil seals would not seat, i actually ruined them trying to get them in, they did not need to be ground for proper fitment, just did not want to seat in the piston, i had to spend an additional fifty dollars on new ones but next time ill know to take a little more time seating them. other than that everything in the kit was flawless

cameron, wv
Durability   Ease of Installation   Performance   Power   Style  
Best one

after my 2001 yz 80 was rebuilt with the pro lite piston i noticed the bike had a different feel when runnin but the power was outstanding recomend to any 2 stroker

Black Earth, WI
Durability   Ease of Installation   Performance   Power   Style  
Wiseco piston, stock bore

I bought this when I smoked the top end in my cr125, went in like a charm, runs excellent! This won't dissapoint you.

Durability   Ease of Installation   Performance   Power   Style  

put this in my kx 125 and fit perfect gained alot of power and speed specially in powerband. get this if your looking for more out of your bike

Shenandoah Junction, WV
Durability   Ease of Installation   Performance   Power   Style  
Wiseco 11:1 Piston on Raptor 700

This is a good piston, the circlips are really heavy duty, making it a little harder than normal to get them in.

The piston alone, out of the box looks badass, has black side skirts and deep curves.

It didnt give me any problems going in the cylinder, and once it was in the motor loved to rev.. It requires 93 octane, or it will tick and not work as well. As far as riding, i find myself running through the gears alot quicker, and flying.

My 4 year old battery didnt want to turn the motor at first becuase of the higher compression, so i had to get a new one. Bike sounds real crisp though.

I DO reccomend this piston to anybody running a 4 stroke.

Holiday, FL
Durability   Ease of Installation   Performance   Power   Style  
Great power but be careful!

installed this on my cr125 ran it and then rode it..great power and woke up my bike like crazy...puled the front tire on a 125 in 1-3rd gear without trying...however i messed something up im assuming the ring gap was not corret and after about anout 1.5hr ride time the ring caused scoreing on my jug destroying it.

dallas, tx
Durability   Ease of Installation   Performance   Power   Style  
Great piston

it takes a while to put in but once its in it is really powerful and works way better than any other piston out there

Eugene, OR
Durability   Ease of Installation   Performance   Power   Style  
Check if the parts are correct.

Piston looks trick, and kit seemed complete. I don't like exchanging or going back and getting correct parts. The kit I bought came with the wrong piston pin unless they intended to have clearances that can be measured with a ruler. I had to put back in the used stock pin that was not in ideal condition. Next time I'm buying a different kit.

Top 250 Contributor
Big Rapids, MI
Durability   Ease of Installation   Performance   Power   Style  
Great Product

Big difference in low end torque, runs on pump gas and is made in the USA, what more could you ask for!!!

Wiseco Pro-Lite High-Compression 4-Stroke Piston
chico, CA
Durability   Ease of Installation   Performance   Power   Style  
Great product and came with all the parts i needed

great product, gave my bike more power over the stock piston. easy to installe and kicked over first time

Top 500 Contributor
billerica, ma

wiseco quality non the less. great piston, wished it came with 2 ring deisgn instead of the one ring, but love the piston.

Very good investment

The Pro-lite piston works really well in my 450r. It helped out pretty well on getting out the hole.

1-17 of 17

Read More
22 Questions
Answered:   22
Not Yet:   0
Q: What octane will I have to use?
3 months 8 days ago
For my 20011 yfz 450r
3 months 4 days ago Location: Mojave Desert
A: Something in the area of 95 pump octane. Your best bet is to make a 2:5 to 1 blend of 91 premium and VP MS109. It equals out to a perfect 95 for around $6.00-$8.00 a gallon depending on your local area prices. It's always a good idea to retune your ECU fuel map when installing higher performance aftermarket parts to avoid possible engine damage.
Location: Indiana
Q: No piston kit for the 16 yz250f?
3 months 18 days ago
I can't find a piston kit for my 2016 yz250f anywhere. Where can I buy one?
MotoSport Staff Expert
3 months 15 days ago
A: If it 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
Location: United States
Q: Will I have to adjust the carb with the high compression piston or will it be Fine?
1 year 3 months ago
MotoSport Staff Expert
1 year 2 months ago
A: It would really depend on your location (altitude/temperature) and how your bike is running with the current jetting. Jetting can be very tricky, there isn't one setting that will work everywhere with every bike. I would recommend taking your bike to a local motorcycle dealership’s service department to have your bike properly jetted.
Q: If it's a stock compression ratio what makes it a high compression piston?
1 year 6 months ago
Expert MotoSport Staff
1 year 6 months ago
A: The standard compression for your 2007 Yamaha YFZ450 would be 11.4:1. This Wiseco Pro-Lite High-Compression 4-Stroke Piston would be 12.4:1.
Location: Marion, OH 43302, USA
Q: Starting?
2 years 4 months ago
Will this kit make my 05 450r harder to start
MotoSport Staff Expert
2 years 4 months ago Location: Portland, OR, USA
A: This piston kit will raise the compression a bit so it may make the kickstart lever a bit harder to kick over but really it should not be so much that it makes the ATV harder to start. The high-compression piston shouldn't cause any starting problems really.
Q: Compression ratio?
Over 6 years ago
is this a 13.5-1 ratio?
MotoSport Staff
Over 6 years ago Location: Tualatin
A: it will be stock compression for whatever bike you are purchasing it for. If you want a hi compression Wiseco pistyon, give us a call and we can special order it for you.
Location: high Ridge MO
Q: Am i able to buy OEM gaskets that will fit this piston?
Over 6 years ago
or should i buy the piston kit with gaskets?
Expert MotoSport Staff
Over 6 years ago
A: the gaskets wont change unless you go over bore. so if your going with a stock bore piston then stock gaskets will work!
Q: Will this work with the athena factory kit for my 1999 yz 125 if so is athena piston better?
Over 6 years ago
Top 1000 Contributor
Over 6 years ago
A: Yes it will work. They are about the same, the wiseco piston may be a little better
Q: If i get this piston and the stage 2 cam will i have to change my efi mapping?
Over 6 years ago
Top 250 Contributor
Over 6 years ago Location: NC
A: Yes you will. You will also have to run at least 93 octane fuel, maybe evan more if there is any spark knock. The stock compresion ratio is about as high as you can go on pump fuel. Any higher you need race fuel. Either way you will need to remap to avoid damage and to get the most out of your parts and money.
Over 6 years ago Location: Shenandoah Junction, WV
A: Yes, you will have to change the map for the cam. If you were only doing the piston you wouldnt.
Q: Right Piston?
Over 6 years ago
I have a 1998 Suzuki rm125 2-stroke. Is this ok to use on my bike?
MotoSport Staff Expert
Over 6 years ago Location: USA
A: A) If your bike is listed under the "fits these bikes" than it will work.

B) If your bike has stock bore than this piston will fit.
1-10 of 22

Read More
See bike s that Fit this Part

Read More