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Wossner Piston Kit

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Wossner  Piston Kit
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Wossner Piston Kit

Our Price: $75.43$192.99

MSRP: $91.04 - $207.41 - You save up to $15.61 (17% off)

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Additional Videos

How To - Rebuild Motorcycle or ATV Top End (Part 1)

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

RM YouTube Channel
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Details

  • Forged pistons for optimum performance, with over 25 years of experience in the high performance racing industry.
  • Piston Kit includes piston, rings, wristpin, circlips and are also supplied with skirt coating.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Wossner Piston Kit Reviews

Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
 
5.0 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
6
0
0
0
0
Value
4.7 / 5
Durability
4.7 / 5
Fitment
4.8 / 5
Performance
4.7 / 5
Recommend it?
Yes (6)
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
WOSSNER GOOD !
Very happy with this product. Other than new rings on a go over this has been a great product. Would buy again when needed...

-m-2016 KTM Freeride 250 R--
August 28, 2019
Freeport, IL, US
Age: 45-64
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'4 - 5'6
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Better than wiseco
Put one of these in my 02 CR250 when I did a full engine rebuild with a brand new cylinder. It’s been a couple years now and it has held up great. Fit and finish was great. Compression is still high after tons of time riding primarily sand in pits along with some woods riding. I’d recommend it!

-m-2002 HONDA CR250R--
User submitted image
User submitted image
March 2, 2019
Thunder Bay, ON, CA
Age: 25-44
Gender:
Female
Weight:
191 - 220 lbs.
Height:
5'7 - 5'9
Value
4 / 5
Durability
4 / 5
Fitment
5 / 5
Performance
4 / 5
Recommend it?
Yes
Time will tell
Fit great and runs strong now, only ran one race so far.

-m-2000 YAMAHA YZ250--
May 18, 2018
St. Paul, MN, US
Age: 45-64
Purchased
1 year ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Definitely worth buying!
Brought this for my dirtbike and it works extremely well. Good quality piston.

-m-DIRT BIKE--
May 16, 2018
Cooloongup , WA, AU
Purchased
1 year ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Strong under pressure.
Used one of these oversized in my 03 Honda CR 250. Not the best option, as the forged piston swelled under heat and seized in the cylinder only leaving piston deposits on the cylinder wall with no major damage. Piston held up well and did not bust. Replaced with the proper size, after cleaning the cylinder up, and she runs like a dream! Great forged pistons!

-m-2003 HONDA CR250R--
March 18, 2017
Grundy, VA, US
Age: 25-44
Purchased
over 2 years ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'7 - 5'9
Value
4 / 5
Durability
4 / 5
Fitment
4 / 5
Performance
4 / 5
Recommend it?
Yes
Good product


-m-2011 YAMAHA YZ85-- nice power good output, durable
September 23, 2016
Charleston, WV, US
Age: 15-24
Purchased
over 3 years ago
Gender:
Male
Weight:
131 - 160 lbs.
Height:
5'4 - 5'6
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 4 questions Browse 4 questions and 12 answers
What wrist pin bearing do these Wossner pistons use??
Steven B on Mar 1, 2019
BEST ANSWER: That’s a good question there’s no name on the package but I’ve put 4 of these in my 125sx and haven’t had a problem sorry couldn’t help more
how do you specify A B C or D cylinders? I see no option and was sent the wrong part
Joshua T on Aug 18, 2018
BEST ANSWER: You’re required to measure th bore of your cylinder, to check wether it has been bored or is slightly enlarged due to high hours of use.

A-D designations are there for over sized fitment; A b omg the stock bore size and D typically being up .030” over. Every bike is different though, and you should refer to the service manual.
This is the one for the engine correct ?
Deshawn r on Mar 17, 2019
BEST ANSWER: Hi Deshawn,Wossner is an excellent choice.I ordered a big bore kit from Eric Gorr a few years back and he sent me a Wossner and it turned out to be one of the best topends I have ever had. I use them on many engines that I build for guys I ride with as well as all of my machines.See u out there, Dirt bike Dan
What is the advertised compression ratio of this piston for a 2006 yamaha yz450f?
KEVIN K on Sep 23, 2017
BEST ANSWER: 12.3 to 1
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