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2007 Honda TRX300EX

Wiseco Pro-Lite Piston Kit - 4-Stroke

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Kit

Product Description

The MotoSport.com Wiseco Pro-Lite Piston Kit - 4-Stroke includes one of each of the following components with the following attributes:

The Wiseco Piston Kit is not just a basic piston replacement, it is a performance piston kit that is more durable than O.E.M. pistons and includes everything necessary to rebuild your top end.

Wiseco Pro-Lite Piston:

Important note: This piston is for a stock sized bore. Please measure your cylinder to check clearance before ordering.

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.

Wiseco Pro-Lite motorcycle pistons are forged using the highest quality materials available resulting in a piston that provides excellent performance and durability. The Wiseco Pro-Lite piston features a race-ready dome finish with smooth edges for improved combustion flow. 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 is achieved.

Pro-Lite Piston features:

  • Much stronger than stock.
  • Tight tolerances for quiet running.
  • More hours with peak performance between piston changes.
  • All Pro-Lite pistons include rings, 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.

Cometic Top End Gasket Kit:

State-of-the-art gaskets is what Cometic has been doing since its inception in 1989. This comes from their dedication to constructing gaskets for the most demanding race circuits like AMA and NASCAR. Today's lightweight engines are producing more horsepower, higher cylinder pressure, clamp load and extreme temperatures. Cometic's commitment is to provide innovative, quality gaskets while maximizing your engine's power and performance.

Cometic meets the needs of each specific gasket by using materials to match. Even the basic top end gasket kit features different materials for each gasket. The head gasket is constructed from non-asbestos, flexible graphite that is laminated to a stainless steel core. The manifold and base gaskets are constructed from non-asbestos nitride rubber-bound fiber. Cometic also includes copper gaskets where needed.

Cometic designs and builds their gaskets in the U.S.A.

Note: Image is for reference only, actual Kit may vary based on contents and fitment.

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(32)
4.6 out of 5 stars
5 star   25
4 star   4
3 star   1
2 star 0
1 star   2
slymx759 Location: Bedford, VA 24523, USA
1-10 of 32
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Verified Purchaser
Location: In the land of the free and the home of the brave
Wiseco Pro-Lite Piston Kit

What else is there to say...Wiseco puts out the best pistons, producing the power required when you snap the throttle, nothing else compares!!!

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Verified Purchaser
Location: Bedford, VA 24523, USA
Everything you should expect

Purchased a Wiseco top end kit for my 06' CRF250r. The kit is everything you should expect from a top end company like Wiseco. High compression piston made a huge power difference. Installation was easy for a mechanic. would not recommend a beginner/shade tree to attempt, but if you do...please open your book and follow the instructions. And of course customer service/shipping etc. was everything you should expect from a top notch company like motosport.com. Would have no problem recommending both product and company to any friend!!

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Verified Purchaser
Location: SV, AZ
Easy Install

This was the first top end rebuild that I have done on any engine and it was surprisingly easy, with a little help from youtube, just make sure you get your timing right

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Location: Callicoon, NY, USA
Top notch

best pistons out there great power easy to use come with everything you need for the job two thumbs up

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Location: Orlando, FL, USA
Great piston!

I bought it for my 2011 kx450f and oh man this thing gives you're bike soo much more power! The Top end is way longer now and it added so much more bottom end power! Love it glad I bought it! Deffinatly worth the price. It went together perfect with no problems!

Overall
Verified Purchaser Top 50 Contributor Top 100 Contributor
Location: Tuscaloosa, AL
First time for me

I've never replaced a piston before in a four stroke. But, with the economy the way it is I thought I would give it a try. Changing the piston is pretty simple but you have to take a lot of items off the bike to access the piston. I found this Wiseco top-end kit worked great for my KX250F. Everything worked perfectly including the gaskets and rings. I've put 50 hours on my bike since the piston replacement and it is running great!

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Top 1000 Contributor
Top end for days

This piston added ridiculous top end.

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Verified Purchaser
Location: Hampstead, MD, USA
Powerful

much light piston than stock

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Verified Purchaser
Location: Hampstead, MD, USA
Power

adds alot of power was difficult to wheelie in 3rd on asphalt and difficult to start. after wiseco piston kit it wheelies is 4th on sand easy and in 5th if you clutch it. makes a huge power increase.

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Location: Tarentum pennsylvania
Great product

Everything went in with ease my yfz runs great and has plenty of power.

1-10 of 32
Total Questions (24)
Questions with answers:
  23
Questions without answers:
  1
1-10 of 24
pipro 4 months 12 days ago
Is the piston operated with a standard cylinder bike?
MotoSport Staff
4 months 8 days ago
The Piston that comes in the Wiseco Pro-Lite Piston Kit - 4-Stroke will be the standard size piston for your Kawasaki KX250F 2009.
Mechanic Over 6 months ago Location: Salem, OR,USA
Will this piston work in a kfx400 with a 435 Athena big bore kit?
MotoSport Staff
Over 6 months ago Location: Portland, OR, USA
This piston will not work the Athena Big bore kit on the 2006 KFX400. Unfortunately Wiseco is only offering a 94.50mm piston while your Athena kit requires a 94.00mm piston. If you can give us a call, we can provide pricing and availability of the correct Athena piston for this kit.
superlalin Over 6 months ago Location: Argentina
What size is the piston, does it feat a suzuki rmz 450(2008)?
MotoSport Staff
Over 6 months ago Location: Portland, OR, USA
This piston would be a stock bore for your 2008 RMZ450. Make sure to profile your bike correctly as the pistons are model specific.
mike Over 7 months ago
Is the wristpin bearing included with this kit? Wiseco Pro-Lite Piston Kit - 4-Stroke?
MotoSport Staff
Over 7 months ago Location: Portland, OR, USA
No, this kit will not include a wrist pin bearing as they are not used on the 4 stroke models.
Andrew Over 10 months ago Location: Theodore, AL, USA
Which ring is the top ring?
MotoSport Staff
Over 10 months ago Location: Portland, OR, USA
For correct fitment it would be recommended to call us and verify which bike you have to give completely accurate information specific to your model. If you have one silver ring and one black ring, the silver ring will be the top ring. Some kits use the same ring for the top and bottom. Keep in mind also, the markings at the ring end(if it has markings) always face up. Typically the first and second rings are different thicknesses also, the thicker ring is the second ring and will not fit in the first groove.
Mike Over 10 months ago
What is stock bore for my 2005 kx250f?
What is stock bore for my 2005 kx250f? Most websites that I go to say that it is 77mm., but one of the wiseco pistons on here says... Bore size: 100.5mm. (Stock)
MotoSport Staff
Over 10 months ago Location: Portland, OR, USA
The stock Bore for your 2005 KX250f is 77mm. Not sure where you are showing the 100.5 MM measurement but that is going to be for a big bore 450. As long as you profile your bike properly, this piston kit will come 77 mm for your bike in 13.1:1 compression.
1 year ago Location: FL
Is this piston considered to be high compression?
MotoSport Staff
1 year ago Location: Portland, OR, USA
For the 2008 Suzuki RMZ450, this piston kit would be considered standard compression, or the same as OEM.
yamahaforlife Over 3 years ago
Can i get an 11-1 compression piston for my 2002 yz250f?
i need lower compression cause im sick of putting a new crank in when i do a rebuild
dominicos426 Over 3 years ago
Does this piston support a 5-valve head?
the picture shows the piston with only 4 valve seats. I don't like to go by pics alone, so does this support a 5 valve head on a 2001 WR426?
MotoSport Staff
Over 3 years ago Location: Tualatin
yes this is just a generic picture and the piston for your WR426 will accept the 5 valves
Over 3 years ago Location: Buena Vista, CO
yes this piston will support a 5 valve head. i just bought one for my 08 YZ 250F. these bikes now have 5 valves also
Top 1000 Contributor
1 year ago
yes it does support 5 valves. I just recently put one in my 07 yz250f that has 5 valves. Great piston kit.
duhameister Over 4 years ago Location: WA
Is this a 2 ring or 3 ring design?
WISECO PRO-LITE PISTON KIT - 4-STROKE
Over 4 years ago Location: Oak Hills, CA
2 ring set 1 compression & 3 piece oil ring
Over 4 years ago Location: WA
Actually (after I got it) it's a 3 ring design, 2 compression and the oil ring.
1-10 of 24

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