![Load image into Gallery viewer, 1-6125-4180C-455-Pontiac Late FX1 Series -18cc Dish Top Pontiac Late-Forged-Piston-Set- 4.18 inch bore](http://dssracing.com/cdn/shop/files/LPONTFX-MLCHR_2d803f1e-21c9-4359-be7c-58142b0c4bf7_400x@2x.jpg?v=1709224107)
![Load image into Gallery viewer, 1-6125-4180C-455-Pontiac Late FX1 Series -18cc Dish Top Pontiac Late-Forged-Piston-Set- 4.18 inch bore](http://dssracing.com/cdn/shop/files/FX1_afb98fe2-bc74-4053-9ce4-2162bf941d07_400x@2x.jpg?v=1709224107)
![Load image into Gallery viewer, 1-6125-4180C-455-Pontiac Late FX1 Series -18cc Dish Top Pontiac Late-Forged-Piston-Set- 4.18 inch bore](http://dssracing.com/cdn/shop/files/pistonbox_730b2849-a033-42a8-ad01-2543039528c4_400x@2x.jpg?v=1709224107)
![Load image into Gallery viewer, 1-6125-4180C-455-Pontiac Late FX1 Series -18cc Dish Top Pontiac Late-Forged-Piston-Set- 4.18 inch bore](http://dssracing.com/cdn/shop/files/FXKKitBlack_fmtcopy_04aaedf1-7af0-4e14-bf5b-f702511a22ab_400x@2x.png?v=1709224107)
Engine Brand: Pontiac
Engine Family: Pontiac Late
Engine Size: 455
With/Without Rings: Without Rings
Cylinder Bore Size: 4.180 in - 106.09 mm
Ring Width: 1/16-1/16-3/16"
Compression Height: 1.480
Pin Diameter: .980
Connecting Rod Length: 6.625 in
Crankshaft Stroke: 4.210 in
Piston Series: 1 - FX Series
Alloy: Forged 4032
Cylinder Head: Pontiac Late
TDC Assembly Height: 10.21
Piston Top Aprox. Comp. Ratio:
Chamber | Comp Ratio |
---|---|
62cc | 11.63 to 1 |
87cc | 9.3 to 1 |
124cc | 7.27 to 1 |
Engine Brand: Pontiac
Engine Family: Pontiac Late
Engine Size: 455
With/Without Rings: Without Rings
Cylinder Bore Size: 4.180 in - 106.09 mm
Ring Width: 1/16-1/16-3/16"
Compression Height: 1.480
Pin Diameter: .980
Connecting Rod Length: 6.625 in
Crankshaft Stroke: 4.210 in
Piston Series: 1 - FX Series
Alloy: Forged 4032
Cylinder Head: Pontiac Late
TDC Assembly Height: 10.21
Piston Top Aprox. Comp. Ratio:
Chamber | Comp Ratio |
---|---|
62cc | 11.63 to 1 |
87cc | 9.3 to 1 |
124cc | 7.27 to 1 |
The DSS FX, X-Groove Feature
![](http://dssracing.com/cdn/shop/files/Screen_Shot_2023-02-02_at_12.58.44_PM_1780x_e2888a05-9892-4c89-88c1-e71433dd4633_750x.gif?v=1680360352)