Athena Big Bore Piston

$87.99 - $245.99
$75.99 - $210.99
4.80 out of 5 stars
Fitment Expert:
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Athena Big Bore Piston
Athena Big Bore Piston
  • Description
  • Reviews (4)
  • Q&A (10)
  • Fitment

Athena has developed a wide range of forged pistons specifically for use in the off-road / ATV market and manufactured using a revolutionary computerized technology originating from GP & F1 racing. Athena forged pistons offer the best solution in terms of performance and reliability thanks to redesigned squish areas, modified compression characteristics and advanced surface treatments, which improve their fluidity.

  • Replacement standard piston for the 82 mm Athena Big Bore Kit.
  • Specially designed, high-performance Cast-Lite, flat top piston.
  • Piston is sold complete with rings, wrist pins and circlips.
  • Note: Piston and directly related parts ONLY; all other parts sold separately.

Additional Specification:

  • For 82 mm big bore cylinder.
4.8 out of 5 stars (4)
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1-4 of 4
Overall 4 out of 5 stars
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: Indy
Dave
Kx144 kit

Great power and some low end increase as well

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: San Diego, CA USA
Daoedsjah

Easy replacement piston for the big bore kit. Comes with piston rings and circa clips. Use the circa clips provided. Athena does extensive R&D. The clips are deceiving but they are effective

Overall 5 out of 5 stars
Top 500 Contributor Top 250 Contributor
Location: huntington beach,ca
geordiegaz
Big bore

well made,perfect fit ,no problems.

Overall 5 out of 5 stars
Location: Chester, NJ
DUnitRacer131
480...fast

480 kit, very fast !!! great replacement pistion, has all the power in the world and can run on super cause it doesn't need high comp piston, A+ from me !!

1-4 of 4
Total Questions (10)
Questions with answers:
  10
Questions without answers:
0
blizzard797 Location: Saint Germain, WI 54558, USA
1-10 of 10
blizzard797 1 year 9 months ago Location: Saint Germain, WI 54558, USA
I'm looking to replace my stock pistons with these.?
My original piston is 50mm with a 50mm stroke at a 13.5:1 ratio. It is going to go into a 1972 Ski doo Blizzard 293 triple cylinder snowmobile. Will these fit the cylinders?
MotoSport Staff
1 year 9 months ago Location: Portland, OR, USA
MotoSportExpert
Usually pistons are model specific and unfortunately, since we do not deal with Snowmobiles, i have no specifications for the pistons for any models. It would be recommended to contact a reputable snowmobile dealership or a company that specializes in snowmobiles to make sure you obtain the correct pistons for this application.
Petery 2 years 2 months ago Location: South Africa
Does this piston come with a Gudgeon Pin? Thank you!?
MotoSport Staff
2 years 2 months ago Location: Portland, OR, USA
MotoSportExpert
When ordering this piston, you would receive the Piston, Rings, Gudgeon Pin ( wrist pin ), and the wrist pin clips. You will need to purchase the gasket set separately if you do need one.
mike88 Over 5 years ago Location: ludowici, ga
Whats the compresson ratio?
for a 2006 rmz 250
MotoSport Staff Expert
Over 5 years ago Location: USA
james718
The compression ration will be slightly higher than stock.
robert323 Over 6 years ago Location: Springfield. Or
Are there gaskets with this?
what does the kit include? does it include the gaskets, to include: head, barrell, exhaust. and valve cover? does it include the piston, rings rispin and clips. ???????
MotoSport Staff
Over 6 years ago Location: Tualatin
JesseC
no this is just the piston kit which includes the piston, rings, wrist pin and circlips. you would need to purchase the gasket kit separately.
wesley44mg Over 6 years ago
Will the 144cc kit fit a 2002 Yz?
MotoSport Staff
Over 6 years ago Location: Tualatin
JesseC
no the big bore kit only fits 05-09 YZ125s
motoxxx751 Over 6 years ago Location: Ohio
Does the Athena piston come with rings, wristpin and circlips?
Expert MotoSport Staff
Over 6 years ago
james718
replacement big bore piston includes piston, rings, pins and clips.
tmauto Over 6 years ago Location: Knoxville, TN
Does this include the rings, pin, and c clips?
MotoSport Staff Expert
Over 6 years ago
james718
this would come with the rings, pin and clips. As well as the piston.
dirtracker Over 6 years ago
Does this piston include the rings,pin ,clip &bearings?
Expert MotoSport Staff
Over 6 years ago
james718
Yes this will include the rings, pin and clips. Also, this will only fit the Athena Big Bore Kit.
Valik Over 7 years ago
What compration ratio is this piston?
Expert MotoSport Staff
Over 6 years ago
Darren977
Well, depending on the year of your YZ450F, the compression ratio of these Athena big bore kits will either be 12.4:1 or 12.5:1.....
SoulMan Over 7 years ago
What's included?
Does this include new rings, circlips etc.?
MotoSport Staff Expert
Over 7 years ago Location: PDX
racer3114
This is going to come with Piston, rings, circlips, and pin.
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