• Sale
  • Regular price $175.00

Order 12 or more Pistons and Save 10%

Only applies to pistons - you can mix part numbers - Discount is automatically applied at check out.

ASC539521 Piston

  • C-75, C-85, C-90, O-200 & O-300 Continental Series Engines
  • 9.5:1 Compression Ratio in C-90, O-200 & O-300 Series Engines
  • 8.4:1 Compression Ratio in C-75 & C-85 Series Engines
  • 4.062 Bore 
  • Available in STD & P15 Bore Sizes
  • Approx weight = 740 grams
  • This piston uses standard Continental Rings and Piston Pins
  • This piston uses 2 Compression rings and one vented Oil Control (1 or 2 piece) ring. The Oil Scraper Ring is not used since the groove below the pin is omitted.
  • This Piston is not FAA-PMA approved and is for experimental or ground use only!
  • Forged and Machined in the USA


Customer Reviews

Based on 2 reviews
David Flannigan
Fast delivery and great product

The four pistons we purchased arrived very fast and my mechanic was very happy with them.

James Small
ASC539521 Pistons 9.5-1

These Aluminum Pistons are Flawless and Balanced within 1 gram. Their Quality Control is amazing. They broke in very easily and oil consumption is ultra low, the performance is excellent and they run very cool and smooth. The communication was comforting and I’m extremely satisfied with the product.