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PROX Piston Kit 01.1222.A

Part Number: 09100428
PROX
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SKU:
09100428
MPN:
01.1222.A
Condition:
New
Availability:
Ships Same Business Day
Weight:
0.41 LBS
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$132.95
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Description

A piston kit is one of the most critical components in engine performance and longevity. The PROX Piston Kit 01.1222.A delivers OEM-equivalent reliability with the precision engineering that high-performance engines demand. Whether you're rebuilding after extensive use or upgrading your engine, this kit provides the exact tolerances and material quality needed to maintain peak combustion efficiency and durability.

Manufactured in Japan to exacting standards, this piston kit combines high-silicon aluminum alloy construction with CNC machining to ensure consistent performance across the entire package. You'll receive everything needed for a complete piston assembly—eliminating guesswork and ensuring all components work together as intended.

  • High-silicon aluminum alloy
  • CNC-machined tolerances
  • OEM replacement spec
  • Includes piston rings
  • Includes wrist pins
  • Includes circlips
  • Japanese manufacturing
  • MPN: 01.1222.A
  • Complete kit package
  • Meets OEM specifications
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Specs

BORE SIZE METRIC:
53.94 MM
PISTON MATERIAL:
ALUMINUM ALLOY
PRODUCT NAME:
PISTON KIT
UNITS:
EACH
ENGINE TYPE:
2-STROKE
PISTON DIAMETER METRIC:
53.94 MM
PISTON SIZE METRIC:
STANDARD SIZE A
RIDING STYLE:
OFF-ROAD
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Fitment for PROX Piston Kit 01.1222.A

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Big Power, Nice Sound!

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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