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ATHENA Piston Kit S4F04500001A

Part Number: 09102531
ATHENA
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SKU:
09102531
UPC:
8050444891551
MPN:
S4F04500001A
Condition:
New
Availability:
Ships Same Business Day
Weight:
0.30 LBS
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MSRP: $142.95
Now: $129.00
Was: $142.95
— You save $13.95
Prop 65 Warning Prop 65 Warning cancer & reproductive harm Price Match Call for more info on price match does not include 3rd party ads

Description

Maximum piston longevity and reliability demand materials engineered for extreme thermal stress—and the ATHENA S4F04500001A delivers exactly that. Whether you're running a two-stroke or four-stroke, this kit uses the same aerospace-grade aluminum alloys that power Formula 1 engines, ensuring superior heat resistance and durability under sustained high RPM. The forged construction and precision tolerances mean consistent ring seal, reduced blow-by, and measurable gains in power delivery across the entire power band.

Complete Kit Includes:

  • Antiwear coated piston
  • Piston rings (matched set)
  • Wrist pin
  • Circlips

Technical Specifications:

  • Two-stroke: 4032 silicon aluminum
  • Four-stroke: 2618 silicon aluminum
  • 3% copper content
  • Enhanced heat resistance
  • Precision forged construction
  • ±.005mm production tolerances
  • Lightweight forged design
  • Antiwear ring coating
  • MPN: S4F04500001A

Installation Note: Bolt-on replacement. Verify fitment with your specific engine application before ordering.

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Specs

COMPRESSION RATIO IMPERIAL:
STOCK
PRODUCT NAME:
PISTON KIT
BORE SIZE METRIC:
44.96 MM
PISTON HEAD SHAPE:
DOMED
RIDING STYLE:
OFF-ROAD
UNITS:
KIT
DISPLACEMENT:
65 CC
ENGINE TYPE:
2-STROKE
PISTON MATERIAL:
4032 ALUMINUM ALLOY
TYPE:
A
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Fitment for ATHENA Piston Kit S4F04500001A

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Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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