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Wiseco 6598M995 Pro Tru Sport Compact Forged Replacement Piston Bore - 99.5mm

(2004-2012 Subaru Impreza WRX STI/WRX STI Limited/WRX STI Special Edition)

Manufacturer

Picture for manufacturer Wiseco Pistons

Part Number

6598M995
11 reviews
Sale Price

$216.99

Estimated ship date Friday, November 20

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Product Details

The Wiseco 6598M995 is a Pro Tru Sport Compact Series forged replacement piston featuring a 99.5mm bore diameter and a dish crown profile. Designed for high-performance sport compact engine builds, this individual piston is sold as a single unit, making it ideal for replacing a damaged piston or completing a set.

Manufactured in Mentor, Ohio, Wiseco Pro Tru Sport Compact pistons are forged and precision-machined by skilled American craftsmen using state-of-the-art forging presses and CNC equipment. By utilizing dedicated forgings closely matched to the final piston shape, Pro Tru pistons deliver superior strength and reduced weight compared to conventional industry standards.

Key Features:

  • Replacement/Individual Piston — sold as a single unit
  • 99.5mm Bore Diameter — precision-forged to tight dimensional tolerances
  • Dish Crown Profile — engineered for optimal combustion chamber efficiency
  • Plasma Moly Ring Package Included — pre-gapped 1/16", 1/16", 3/16" rings provide excellent seal, friction reduction, and long service life
  • Wrist Pin Included — complete assembly-ready kit
  • Recommended Ring Set: 9950VF
  • Forged and CNC-machined in the USA for consistent quality and performance
  • Available in multiple dome volumes to allow precise compression ratio selection for your specific build

The Wiseco Pro Tru Sport Compact Series represents an outstanding value in forged performance pistons, combining race-proven forging technology with practical street and track usability. Whether refreshing a worn engine or building a high-performance motor, the 6598M995 delivers the strength and precision Wiseco is known for.

Products specifications

Fits

2004-2012 Subaru Impreza WRX STI/WRX STI Limited/WRX STI Special Edition

Bore

99.5mm

Comp Height

30.7

Comp Ratio

8.9:1

Dome Volume

-19

Gram Weight

371

Rod

130.5

Stroke

79

It’s great

Easy to order

So far so good. First time ordering from website

site was easy to follow, product came quickly and was what I had ordered

Great price easy checkout, looking forward to the purchased product first timer

I was little worried when I made an order, because the price was too good to be true, and Autoplicity was new to me.<br>However, Autoplicity took only a business day to ship my item.<br>The item has been delivered, and I'm very happy with Autoplicity and the item itself.<br><br>Thank you Autoplicity for the great price and fast shipping!!!

&eth;

Autoplicity had exactly the part I was looking for, for my SRT8 Challenger, at the best price I could find!

Great site and service! Looking forward to doing business again soon!

Shipped out fast. Prices are very competitive. Couldn't ask for more.

AMAZZZZING price and great service!!

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