Big Duke / Big Chief / Big Victor Gas-Ported (GP) 18º

These pistons are specifically designed for Big Duke/Big Chief cylinder heads and feature our race proven dome and skirt design. Valve reliefs are designed to accept oversized valves and long duration, tight lobe separation roller cams. Precision CNC machined ring grooves accept .043 D-wall, 1/16, 3/16 rings.

Includes:

  • Pin #990-2930-15-51S (150g)
  • Forced pin oiler, with annular oil reservoir

Nitrous Series Includes:

  • Vertical gas ports
  • Double spiro locks (#990-042-CS)
Part # Brand Bore Stroke Rod Deck Head CC Comp. Ratio Comp. Height Crown Vol. Ring Set Head Type Stock Action
243318 JE Pistons 4.600 4.250 6.535 9.800 82.0 15.3 1.120 13.00 JG86F8-4600-5 Dome In stock
243318 JE Pistons 4.600 4.250 6.535 9.800 87.0 14.5 1.120 13.00 JG86F8-4600-5 Dome In stock
243318 JE Pistons 4.600 4.750 6.700 10.200 82.0 17.0 1.120 13.00 JG86F8-4600-5 Dome In stock
243318 JE Pistons 4.600 4.750 6.700 10.200 87.0 16.1 1.120 13.00 JG86F8-4600-5 Dome In stock
243318 JE Pistons 4.600 4.250 6.535 9.800 97.0 13.1 1.120 13.00 JG86F8-4600-5 Dome In stock
243318 JE Pistons 4.600 4.750 6.700 10.200 97.0 14.5 1.120 13.00 JG86F8-4600-5 Dome In stock
218585 JE Pistons 4.600 4.750 6.700 10.200 87.0 17.5 1.120 19.00 J200U8-4600-5 Dome Back Order
218585 JE Pistons 4.600 4.750 6.700 10.200 82.0 18.6 1.120 19.00 J200U8-4600-5 Dome Back Order
218585 JE Pistons 4.600 4.250 6.535 9.800 87.0 15.7 1.120 19.00 J200U8-4600-5 Dome Back Order
218585 JE Pistons 4.600 4.750 6.700 10.200 97.0 15.6 1.120 19.00 J200U8-4600-5 Dome Back Order
218585 JE Pistons 4.600 4.250 6.535 9.800 82.0 16.7 1.120 19.00 J200U8-4600-5 Dome Back Order
218585 JE Pistons 4.600 4.250 6.535 9.800 97.0 14.1 1.120 19.00 J200U8-4600-5 Dome Back Order
243323 JE Pistons 4.560 4.250 6.385 9.800 82.0 15.1 1.270 0.54 JG8608-4560-5 Dome Back Order
243323 JE Pistons 4.560 4.250 6.385 9.800 97.0 12.9 1.270 0.54 JG8608-4560-5 Dome Back Order
243323 JE Pistons 4.560 4.250 6.385 9.800 87.0 14.3 1.270 0.54 JG8608-4560-5 Dome Back Order
243314 JE Pistons 4.610 4.375 6.535 9.800 87.0 15.8 1.060 18.00 JG7708-4610-5 Dome Back Order
243314 JE Pistons 4.610 4.375 6.535 9.800 97.0 14.2 1.060 18.00 JG7708-4610-5 Dome Back Order
243314 JE Pistons 4.610 4.375 6.535 9.800 82.0 16.8 1.060 18.00 JG7708-4610-5 Dome Back Order
243325 JE Pistons 4.610 4.250 6.385 9.800 82.0 15.4 1.270 0.54 JG86H8-4610-5 Dome Back Order
243325 JE Pistons 4.610 4.250 6.385 9.800 87.0 14.6 1.270 0.54 JG86H8-4610-5 Dome Back Order
243325 JE Pistons 4.610 4.250 6.385 9.800 97.0 13.2 1.270 0.54 JG86H8-4610-5 Dome Back Order
170668 JE Pistons 4.560 4.750 6.700 10.200 97.0 14.3 1.120 0.00 J20008-4560-5 Dome Back Order
170668 JE Pistons 4.560 4.250 6.535 9.800 97.0 12.9 1.120 0.00 J20008-4560-5 Dome Back Order
170668 JE Pistons 4.560 4.750 6.700 10.200 87.0 15.9 1.120 0.00 J20008-4560-5 Dome Back Order
170668 JE Pistons 4.560 4.250 6.535 9.800 82.0 15.1 1.120 0.00 J20008-4560-5 Dome Back Order
170668 JE Pistons 4.560 4.750 6.700 10.200 82.0 16.8 1.120 0.00 J20008-4560-5 Dome Back Order
170668 JE Pistons 4.560 4.250 6.535 9.800 87.0 14.3 1.120 0.00 J20008-4560-5 Dome Back Order
243322 JE Pistons 4.610 4.750 6.700 10.200 87.0 17.6 1.120 0.83 JG86H8-4610-5 Dome In stock
243322 JE Pistons 4.610 4.250 6.535 9.800 82.0 16.8 1.120 0.83 JG86H8-4610-5 Dome In stock
243322 JE Pistons 4.610 4.750 6.700 10.200 82.0 18.7 1.120 0.83 JG86H8-4610-5 Dome In stock
243322 JE Pistons 4.610 4.250 6.535 9.800 87.0 15.8 1.120 0.83 JG86H8-4610-5 Dome In stock
243322 JE Pistons 4.610 4.750 6.700 10.200 97.0 15.7 1.120 0.83 JG86H8-4610-5 Dome In stock
243322 JE Pistons 4.610 4.250 6.535 9.800 97.0 14.1 1.120 0.83 JG86H8-4610-5 Dome In stock
243319 JE Pistons 4.610 4.250 6.535 9.800 82.0 15.4 1.120 13.00 JG86H8-4610-5 Dome Back Order
243319 JE Pistons 4.610 4.250 6.535 9.800 97.0 13.2 1.120 13.00 JG86H8-4610-5 Dome Back Order
243319 JE Pistons 4.610 4.250 6.535 9.800 87.0 14.6 1.120 13.00 JG86H8-4610-5 Dome Back Order
243319 JE Pistons 4.610 4.750 6.700 10.200 87.0 16.2 1.120 13.00 JG86H8-4610-5 Dome Back Order
243319 JE Pistons 4.610 4.750 6.700 10.200 97.0 14.6 1.120 13.00 JG86H8-4610-5 Dome Back Order
243319 JE Pistons 4.610 4.750 6.700 10.200 82.0 17.1 1.120 13.00 JG86H8-4610-5 Dome Back Order
170669 JE Pistons 4.600 4.250 6.535 9.800 82.0 15.3 1.120 0.00 J200U8-4600-5 Dome Back Order
170669 JE Pistons 4.600 4.250 6.535 9.800 87.0 14.5 1.120 0.00 J200U8-4600-5 Dome Back Order
170669 JE Pistons 4.600 4.750 6.700 10.200 82.0 17.0 1.120 0.00 J200U8-4600-5 Dome Back Order
170669 JE Pistons 4.600 4.750 6.700 10.200 87.0 16.1 1.120 0.00 J200U8-4600-5 Dome Back Order
170669 JE Pistons 4.600 4.250 6.535 9.800 97.0 13.1 1.120 0.00 J200U8-4600-5 Dome Back Order
170669 JE Pistons 4.600 4.750 6.700 10.200 97.0 14.5 1.120 0.00 J200U8-4600-5 Dome Back Order
243316 JE Pistons 4.610 4.750 6.700 10.200 87.0 17.6 1.120 20.00 JG7708-4610-5 Dome In stock
243316 JE Pistons 4.610 4.250 6.535 9.800 82.0 16.8 1.120 20.00 JG7708-4610-5 Dome In stock
243316 JE Pistons 4.610 4.750 6.700 10.200 82.0 18.7 1.120 20.00 JG7708-4610-5 Dome In stock
243316 JE Pistons 4.610 4.250 6.535 9.800 87.0 15.8 1.120 20.00 JG7708-4610-5 Dome In stock
243316 JE Pistons 4.610 4.750 6.700 10.200 97.0 15.7 1.120 20.00 JG7708-4610-5 Dome In stock
243316 JE Pistons 4.610 4.250 6.535 9.800 97.0 14.1 1.120 20.00 JG7708-4610-5 Dome In stock
170671 JE Pistons 4.530 4.250 6.385 9.800 82.0 15.1 1.270 0.00 J20008-4530-5 Dome Back Order
170671 JE Pistons 4.530 4.250 6.385 9.800 97.0 12.9 1.270 0.00 J20008-4530-5 Dome Back Order
170671 JE Pistons 4.530 4.250 6.385 9.800 87.0 14.2 1.270 0.00 J20008-4530-5 Dome Back Order
243313 JE Pistons 4.600 4.375 6.535 9.800 87.0 15.8 1.060 18.00 JG7708-4600-5 Dome In stock
243313 JE Pistons 4.600 4.375 6.535 9.800 97.0 14.2 1.060 18.00 JG7708-4600-5 Dome In stock
243313 JE Pistons 4.600 4.375 6.535 9.800 82.0 16.8 1.060 18.00 JG7708-4600-5 Dome In stock
243317 JE Pistons 4.560 4.750 6.700 10.200 97.0 14.3 1.120 13.00 JG8608-4560-5 Dome Back Order
243317 JE Pistons 4.560 4.250 6.535 9.800 97.0 12.9 1.120 13.00 JG8608-4560-5 Dome Back Order
243317 JE Pistons 4.560 4.750 6.700 10.200 87.0 15.9 1.120 13.00 JG8608-4560-5 Dome Back Order
243317 JE Pistons 4.560 4.250 6.535 9.800 82.0 15.1 1.120 13.00 JG8608-4560-5 Dome Back Order
243317 JE Pistons 4.560 4.750 6.700 10.200 82.0 16.8 1.120 13.00 JG8608-4560-5 Dome Back Order
243317 JE Pistons 4.560 4.250 6.535 9.800 87.0 14.3 1.120 13.00 JG8608-4560-5 Dome Back Order
170673 JE Pistons 4.600 4.250 6.385 9.800 82.0 15.3 1.270 0.00 J200U8-4600-5 Dome In stock
170673 JE Pistons 4.600 4.250 6.385 9.800 97.0 13.1 1.270 0.00 J200U8-4600-5 Dome In stock
170673 JE Pistons 4.600 4.250 6.385 9.800 87.0 14.5 1.270 0.00 J200U8-4600-5 Dome In stock
243324 JE Pistons 4.600 4.250 6.385 9.800 82.0 15.3 1.270 0.54 JG86F8-4600-5 Dome Back Order
243324 JE Pistons 4.600 4.250 6.385 9.800 97.0 13.1 1.270 0.54 JG86F8-4600-5 Dome Back Order
243324 JE Pistons 4.600 4.250 6.385 9.800 87.0 14.5 1.270 0.54 JG86F8-4600-5 Dome Back Order
243315 JE Pistons 4.600 4.750 6.700 10.200 87.0 17.5 1.120 20.00 JG7708-4600-5 Dome Back Order
243315 JE Pistons 4.600 4.750 6.700 10.200 82.0 18.6 1.120 20.00 JG7708-4600-5 Dome Back Order
243315 JE Pistons 4.600 4.250 6.535 9.800 87.0 15.7 1.120 20.00 JG7708-4600-5 Dome Back Order
243315 JE Pistons 4.600 4.750 6.700 10.200 97.0 15.6 1.120 20.00 JG7708-4600-5 Dome Back Order
243315 JE Pistons 4.600 4.250 6.535 9.800 82.0 16.7 1.120 20.00 JG7708-4600-5 Dome Back Order
243315 JE Pistons 4.600 4.250 6.535 9.800 97.0 14.1 1.120 20.00 JG7708-4600-5 Dome Back Order
170672 JE Pistons 4.560 4.250 6.385 9.800 82.0 15.1 1.270 0.00 J20008-4560-5 Dome Back Order
170672 JE Pistons 4.560 4.250 6.385 9.800 97.0 12.9 1.270 0.00 J20008-4560-5 Dome Back Order
170672 JE Pistons 4.560 4.250 6.385 9.800 87.0 14.3 1.270 0.00 J20008-4560-5 Dome Back Order
243321 JE Pistons 4.600 4.750 6.700 10.200 87.0 17.5 1.120 20.00 JG86F8-4600-5 Dome Back Order
243321 JE Pistons 4.600 4.750 6.700 10.200 82.0 18.6 1.120 20.00 JG86F8-4600-5 Dome Back Order
243321 JE Pistons 4.600 4.250 6.535 9.800 87.0 15.7 1.120 20.00 JG86F8-4600-5 Dome Back Order
243321 JE Pistons 4.600 4.750 6.700 10.200 97.0 15.6 1.120 20.00 JG86F8-4600-5 Dome Back Order
243321 JE Pistons 4.600 4.250 6.535 9.800 82.0 16.7 1.120 20.00 JG86F8-4600-5 Dome Back Order
243321 JE Pistons 4.600 4.250 6.535 9.800 97.0 14.1 1.120 20.00 JG86F8-4600-5 Dome Back Order