14º Pro Action® / Pro Topline®

GM LT Asymmetrical FSR

Designed specifically for 14º Pro Action/Pro Topline cylinder heads, these pistons are excellent for Sprint Car and Drag Race use. Valve reliefs will accommodate oversized valves and long duration, tight lobe separation cams. Precision CNC machined ring grooves are designed for 1/16, 1/16, 3/16 rings. These pistons utilize dedicated left and right hand forgings.

Includes:

  • Pin #927-2750-15-51S (130g)
  • Contact reduction grooves
  • Double spiro locks (#927-042-CS)

*Rings Sold Separately*

Part # Bore Stroke Rod Deck Head CC Comp. Ratio Comp. Height Crown Vol. Ring Set Head Type Series Stock Action
194955 4.135 3.800 6.000 9.000 60.0 13.6 1.100 3.00 J10008-4135-5 Dome JE Pistons Back Order
194955 4.135 3.800 6.000 9.000 55.0 14.6 1.100 3.00 J10008-4135-5 Dome JE Pistons Back Order
194955 4.135 3.800 6.000 9.000 52.0 15.3 1.100 3.00 J10008-4135-5 Dome JE Pistons Back Order