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PROX Piston Kit 01.1315.A3

Part Number: PX4420D
PROX
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SKU:
PX4420D
MPN:
011315A3
Condition:
New
Availability:
Ships Same Business Day
Weight:
0.63 LBS
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MSRP: $139.95
Now: $119.00
Was: $139.95
— You save $20.95

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Description

When your engine is running at the limit, piston failure isn't an option. The PROX Piston Kit 01.1315.A3 delivers OEM-equivalent reliability with the precision engineering required for high-performance applications. This complete kit ensures you have everything needed for a proper rebuild without sourcing components from multiple suppliers.

Engineered in Japan and manufactured to exacting standards, these pistons are cast from high-silicon aluminum alloy that meets or exceeds original equipment specifications. Each piston is CNC-machined to extremely close tolerances, eliminating the inconsistencies that can compromise ring seal and combustion efficiency. Whether you're rebuilding after a season of competition or refreshing a tired engine, this kit provides the durability and precision your application demands.

  • High-silicon aluminum alloy
  • OEM-equivalent performance
  • CNC-machined tolerances
  • Includes rings
  • Includes wrist pins
  • Includes circlips
  • Complete kit packaging
  • Japanese manufacturing
  • MPN: 011315A3
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Specs

PISTON SIZE METRIC:
STANDARD SIZE A
PISTON DIAMETER METRIC:
66.37 MM
PISTON MATERIAL:
ALUMINUM ALLOY
RIDING STYLE:
OFF-ROAD
UNITS:
EACH
BORE SIZE METRIC:
66.37 MM
PRODUCT NAME:
PISTON KIT
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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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