All Pro 13º / GB2000

These pistons are designed using our FSR (Forged Side Relief) forgings featuring internal and external cavities to minimize weight while providing a more rigid construction. The FSR design reduces skirt width helping to minimize piston contact with the cylinder wall that can cause friction and power loss. With thousands of race miles logged in the most demanding applications like NASCAR and the IRL, these pistons provide the ultimate combination of low friction lightweight design with increased stability and strength. (Tech note: In extreme horsepower applications the use of oil squirters may be required)

Includes:

  • Contact reduction grooves
  • 927-2250-15-51C pin
  • Pin fitting and wire locks
  • Double pin oilers
  • Lateral Gas Ports
  • Accumulator Groove
Part # Bore Stroke Rod Deck Head CC Comp. Ratio Comp. Height Crown Vol. Ring Set Head Type Series Stock Action
281793 4.125 3.800 6.000 9.000 50.0 14.0 1.100 -4.50 J75008-4125-5 Dome JE Pistons In stock
281793 4.125 3.800 6.000 9.000 45.0 15.1 1.100 -4.50 J75008-4125-5 Dome JE Pistons In stock
281793 4.125 3.800 6.000 9.000 40.0 16.4 1.100 -4.50 J75008-4125-5 Dome JE Pistons In stock
281796 4.140 3.800 6.000 9.000 45.0 15.2 1.100 -4.70 J75008-4135-5 Dome JE Pistons Back Order
281796 4.140 3.800 6.000 9.000 50.0 14.1 1.100 -4.70 J75008-4135-5 Dome JE Pistons Back Order
281796 4.140 3.800 6.000 9.000 40.0 16.5 1.100 -4.70 J75008-4135-5 Dome JE Pistons Back Order
281798 4.130 3.800 5.850 9.000 50.0 14.0 1.250 -4.70 J75008-4130-5 Dome JE Pistons In stock
281798 4.130 3.800 5.850 9.000 45.0 15.2 1.250 -4.70 J75008-4130-5 Dome JE Pistons In stock
281798 4.130 3.800 5.850 9.000 40.0 16.5 1.250 -4.70 J75008-4130-5 Dome JE Pistons In stock
281800 4.140 3.800 5.850 9.000 45.0 15.2 1.250 -4.70 J75008-4135-5 Dome JE Pistons In stock
281800 4.140 3.800 5.850 9.000 40.0 16.5 1.250 -4.70 J75008-4135-5 Dome JE Pistons In stock
281800 4.140 3.800 5.850 9.000 50.0 14.1 1.250 -4.70 J75008-4135-5 Dome JE Pistons In stock
281794 4.130 3.800 6.000 9.000 50.0 14.0 1.100 -4.50 J75008-4130-5 Dome JE Pistons In stock
281794 4.130 3.800 6.000 9.000 45.0 15.2 1.100 -4.50 J75008-4130-5 Dome JE Pistons In stock
281794 4.130 3.800 6.000 9.000 40.0 16.5 1.100 -4.50 J75008-4130-5 Dome JE Pistons In stock
281797 4.125 3.800 5.850 9.000 40.0 16.4 1.250 -4.70 J75008-4125-5 Dome JE Pistons In stock
281797 4.125 3.800 5.850 9.000 50.0 14.0 1.250 -4.70 J75008-4125-5 Dome JE Pistons In stock
281797 4.125 3.800 5.850 9.000 45.0 15.1 1.250 -4.70 J75008-4125-5 Dome JE Pistons In stock
281795 4.135 3.800 6.000 9.000 45.0 15.2 1.100 -4.50 J75008-4135-5 Dome JE Pistons In stock
281795 4.135 3.800 6.000 9.000 50.0 14.1 1.100 -4.50 J75008-4135-5 Dome JE Pistons In stock
281795 4.135 3.800 6.000 9.000 40.0 16.5 1.100 -4.50 J75008-4135-5 Dome JE Pistons In stock
281799 4.135 3.800 5.850 9.000 45.0 15.2 1.250 -4.70 J75008-4135-5 Dome JE Pistons In stock
281799 4.135 3.800 5.850 9.000 40.0 16.5 1.250 -4.70 J75008-4135-5 Dome JE Pistons In stock
281799 4.135 3.800 5.850 9.000 50.0 14.1 1.250 -4.70 J75008-4135-5 Dome JE Pistons In stock