The pistons from Diamond Pistons are suitable for use on the street as well as at the drag strip. Domestic engines with high-compression, forced induction, or nitrous-fed engines are designed and tested for high-stresses. These forged aluminium pistons are precisely built for your engine to produce the performance you need, and they are engineered with lifespan, reliability, and strength in mind.

LS9/LSA Competition Series

Piston Features:
  • 3D milling on piston crowns for ready to install finish
  • Valve pockets designed to work with most aftermarket cylinder heads
  • Offset pins for quiet operation
  • Moly skirt coating for friction loss and skirt wear protection
  • Top ring down dimension: .250"
  • Ratios figured for .040 head gasket
  • Premium 1.2mm x 1.2mm x 3.0mm ring package included
  • Premium 8620 .185W wrist pins included
  • Valve pocket depth: 0.178" intake and .108" exhaust
  • 2618 material for High HP-NOS-Boost applications

Forced pin oilers from the oil ring; Pin Fitted; Moly Coated Skirts; 3D Pockets; Pins, Lock's & Support Rails (if required) included

More From This Category

ICON Piston, 4 in. Bore, 1/16, 1/16, 3/16 in. Ring Grooves, For Chrysler 360 Rod 6.123 Solid Dome - 11.2cc 2V, .040 Oversized, w/ Rings, Each

ICON Piston, 4 in. Bore, 1/16, 1/16, 3/16 in. Ring Grooves, For Chrysler 360 Rod 6.123 Solid Dome - 11.2cc 2V, .040 Oversized, w/ Rings, Each

$1,748.12

MANLEY Piston, Coated, 1.115 in. Compression Distance, 4.010 in. Bore Size, -4cc Flat Top, For Chevrolet LS, Each

MANLEY Piston, Coated, 1.115 in. Compression Distance, 4.010 in. Bore Size, -4cc Flat Top, For Chevrolet LS, Each

$236.53

KB Piston, 4 in. Bore, For Holden 308 Rod 5.622 Flat Top 0cc No Valve, .040 Oversized, w/ Rings, Each

KB Piston, 4 in. Bore, For Holden 308 Rod 5.622 Flat Top 0cc No Valve, .040 Oversized, w/ Rings, Each

$993.62

MANLEY Piston, Turbo Tuff, 1.130 in. Compression Distance, 86 mm Bore Size, -12 Dish, For Mitsubishi, Each

MANLEY Piston, Turbo Tuff, 1.130 in. Compression Distance, 86 mm Bore Size, -12 Dish, For Mitsubishi, Each

$507.82

MANLEY Piston, 3.917 in. Bore Size, 9.3cc Dome, HEMI 5.7, Each

MANLEY Piston, 3.917 in. Bore Size, 9.3cc Dome, HEMI 5.7, Each

$236.53

ICON Piston and Ring Kit, Hypereutectic, Flat, 4.030 in. Bore, GM, V6, Kit

ICON Piston and Ring Kit, Hypereutectic, Flat, 4.030 in. Bore, GM, V6, Kit

$822.68