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Wiseco Pro-Lite 4-Stroke Piston
Wiseco Pro-Lite 4-Stroke Piston

$82.99 - $224.99
10% Off - Save up to $25.01

Description See Also: 32 Reviews 4 Questions Fitment Part Numbers
Item #WCO000Q

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32 Reviews
4.8 out of 5 stars
5 Star   28 4 Star   2 3 Star   1 2 Star   0 1 Star   1
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All Reviews
Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 4/5 Style 5/5
Came in great packaging and came fast

Bought about a month ago and installed and so far it’s been great

Verified Purchaser
Monroe la
Durability 5/5 Ease of Installation 4/5 Performance 4/5 Power 4/5 Style 4/5
Great product

I bought this couple months back and it improved my bike performance a lot... I’m well satisfied with my purchase

Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Great piston and ring set

Great long lasting piston that you can rely on keeping your bike running

Verified Purchaser
Bowman SC
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Great product

Was repairing a customers TRX 400 ex
This piston has history and has been a great product to use!!

Verified Purchaser
Durability 1/5


Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Great Product

I have always ran Wiseco in my atv's, recently did a full rebuild with a new Wiseco piston and has been running great.

Verified Purchaser Top 1000
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 5/5
Great piston and gasket kit

Rebuilt my top end on my kx250f everything went together great, only problem I seen was the directions on installing g rings was a little wonky the way it was written and it could confuse some people, bit other than that this was a 1 hour job, the cometic gasket kit featured metal gaskets which are great for keeping tight seals.

Portland OR
Durability 4/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 4/5

I bought this piston as a replacement for my OEM. It is an awesome kit, Wiseco even gives a sweet little baggy with the piston. All directions and hardware were easy to read and easy to install.

Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
More power!

Maybe it’s just because it’s a new top end but the Wiseco definitely felt like it had quicker throttle response and way more grunt down low than the stock piston.

Verified Purchaser
Farmersburg, IN
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
2015 yz250f Works great.

Great rebuild kit. Restored power to the bike. Its got about 8 hours on it now and the bike runs fantastic and reliable. I would definitely recommend this kit for this bike.

See 10 More Reviews
4 Questions
Answered:   4
Not Yet:   0
Q: What is the model number and compression ratio for a 2013 honda trx400x
2 years 10 months ago
Expert MotoSport Staff
2 years 10 months ago
A: This Wiseco Pro-Lite 4-Stroke Piston for your 2013 Honda TRX400x would be part number 4606M08500 and 10:1 compression ratio.
Q: What is the compression ratio of this piston for a 1994 yamaha warrior 350 and what gaskets come with the kit
Over 3 years ago
Expert MotoSport Staff
Over 3 years ago
A: 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.
Q: Will this fit my 01 honda 400ex
Over 3 years ago
Top 50 Contributor
Over 3 years ago
A: as long as you verify the OEM Bore size
Expert MotoSport Staff
Over 3 years ago
A: 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.
Q: 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?
Over 4 years ago
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
Over 4 years ago
A: yes it will fit your stock bore. new piston rings and recommend new valve guide seals. this should solve your oil burning. with the lighter weight it will give the bike a little more pep!
Top 1 Contributor
Over 4 years ago
A: 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 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.
See all bikes that this part fits...
See Fitments
# Part Numbers
Product Variant Manufacturer Part #
.080 Oversize 11035M07800
Stock Bore 40002M09700
Stock Bore 40009M07700
.090 Oversize 40011M07900
Stock Bore 40015M08800
Stock Bore 40020M07700
Stock Bore 40056M08800
Stock Bore 40064M09500
Stock Bore 40073M09500
Stock Bore 40074M07800
Stock Bore 40083M05000
Stock Bore 40091M09500
Stock Bore 40094M07700
Stock Bore 40095M09600
Stock Bore 40096M09600
.080 Oversize 40098M05200
Stock Bore 40110M09600
Stock Bore 40117M09500
.040 Oversize 40118M05350
Stock Bore 40129M07680
Stock Bore 40133M10000
.020 Oversize 40133M10050
.060 Oversize 40133M10100
Stock Bore 40136M09603
Stock Bore 40144M07800
Stock Bore 40145M07680
Stock Bore 40151M07700
.040 Oversize 4606M08600
.080 Oversize 4606M08700
.120 Oversize 4606M08800
Stock Bore 4630M07800
.080 Oversize 4630M08000
Stock Bore 4689M07300
.020 Oversize 4689M07350
.040 Oversize 4689M07400
.060 Oversize 4689M07450
.080 Oversize 4689M07500
.080 Oversize 4713M09200
Stock Bore 4715M10000
.100 Oversize 4715M10240
.080 Oversize 4731M09700
Stock Bore 4752M05400
.020 Oversize 4752M05450
.040 4752M05500
Stock Bore 4755M09600
.080 Oversize 4755M09800
.120 Oversize 4755M09900
.080 Oversize 4785M09700
.020 4798M03950
.040 Oversize 4798M04000
.060 Oversize 4798M04050
.080 Oversize 4798M04100
Stock Bore 4805M09500
Stock Bore 4815M05700
.040 Oversize 4815M05800
.160 Oversize 4815M06100
Stock Bore 4816M06550
.020 Oversize 4816M06600
.040 Oversize 4816M06650
.060 Oversize 4816M06700
.080 Oversize 4816M06750
.080 4842M07900
Stock Bore 4858M07700
Stock Bore 4870M09550
.080 Oversize 4872M07900
.020 Oversize 4875M05350
.040 Oversize 4875M05400
Stock Bore 4880M04700
.020 Oversize 4880M04750
.040 Oversize 4880M04800
Stock Bore 4881M07700
.200 Oversize 4890M10100
Stock Bore 4901M09600
.080 Oversize 4901M09800
.080 Oversize 4915M06800
Stock Bore 4927M07700
Stock Bore 4928M07700
Stock Bore 4937M09700
Stock Bore / 12:1 4942M08900
Stock Bore 4947M10000
.080 Oversize 4952M07900
Stock Bore 4954M09600
Stock Bore 4979M09600
Stock Bore 4981M07600
Stock Bore 4982M08300
.240 Oversize 4983M08300
.160 Oversize 4984M08200
Stock Bore 4989M10000
.040 Oversize 4989M10100
.100 Oversize 4989M10241
Stock Bore 4606M08500
Stock Bore / 11:1 4941M08900
Stock Bore 4731M09500
Stock Bore 4915M06600
Stock Bore 40065M06600
Stock Bore 4829M07800
Stock Bore 4949M07800
Stock Bore 40003M07680
Stock Bore 4973M09600
Stock Bore 4904M07700
Stock Bore 4920M07700
Stock Bore 40010M07700
Stock Bore 40019M07700
Stock Bore 4900M09600
Stock Bore 4980M09600
Stock Bore 4911M09550
Stock Bore 4713M09000
Stock Bore 4807M09920
Stock Bore 4737M10000
.020 Oversize 4737M10050
.040 Oversize 4737M10100
Stock Bore 4902M10200
Stock Bore 4843M07700
Stock Bore 4921M07700
Stock Bore 40007M07700
Stock Bore 4869M09550
Stock Bore 4953M09600
Stock Bore 4574M07400
Stock Bore 4848M09400
Stock Bore 4899M09600
Stock Bore 4419M08300
Stock Bore 4865M09500
Stock Bore 4693M09500
Stock Bore 4785M09500
Stock Bore 40001M09700
Stock Bore 4882M07700
Stock Bore 4952M07700
Stock Bore 4872M07700
Stock Bore 40072M07700
Stock Bore 4649M09200
Stock Bore / 11.5:1 4753M09600
Stock Bore / 12:1 4820M09600
Stock Bore / 12:1 4978M09600
Stock Bore 40089M09600
Stock Bore 40082M09600
Stock Bore 40111M09700
Stock Bore 40116M07700
Stock Bore 40114M07680
Stock Bore 40014M08800
Stock Bore 40086M09600
Stock Bore 40069M07600
Stock Bore 40124M07700
Stock Bore 40125M09603