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331 Flat Top 3.25 Stroker ProTru Pistons w/ Rings


Wiseco ProTru Forged 331 Flat Top Pistons, Forged 4032, Coated with JE Rings 
Wiseco PN: PTS512A3 - 4.030 bore
  • Flat Top 7cc Valve relief, Inline Relief
  • 1.165 Compression Height for 347 Stroker
  • For 3.400 stroke / 5.400 Rod
  • ~10.3:1 CR with 58cc head
  • Forged 4032 Alloy
  • For bushed or press fit rods
  • INCLUDES JE Plasma Moly Rings! Wiseco pins and spirolox
These are the BEST value in performance pistons today! These include a 1/16 ring pack (not 5/64!), JE quality rings, skirt coatings and are FORGED at a hypereutectic price! 

Wiseco ProTru Forged Pistons:

These are our sportsman series pistons geared toward budget minded consumers looking for the best bang for their buck in quality forged racing pistons. The features you would normally find in a high quality set of Wiseco Pistons can be found at an affordable price with Pro Tru. All applications are CNC machined with symmetrical valve pockets and feature pressure fed pin oiling with precision finished full floating pins. These pistons give you the reliability expected from a Wiseco design at a great price point.

  • 4032 Forged Aluminum
  • Increased valve clearance
  • Tight piston to wall clearance
  • Reduced piston weight
  • Reinforced piston skirts
  • Offset wrist pins (Eliminates collapsed piston skirts)
  • Floating wrist pins


Brand: Wiseco    Manufacturers Part Number: PTS512A3

Add to Cart:

  • Model: PTS512A3
  • Shipping Weight: 12lbs
  • 100 Units in Stock

This product was added to our catalog on Thursday 10 March, 2016.