![Load image into Gallery viewer, K1-2705-4040 408 Small Block Chevy K1-FX Series -21cc Dish Top Forged Piston Set. 4.040 bore](http://dssracing.com/cdn/shop/products/SBCFX-SLCMDHR_bc51ee2b-9f43-45ad-8395-a0ca293c921f_400x@2x.jpg?v=1672101737)
![Load image into Gallery viewer, DISCONTINUED USE K1-2475-4040 408 Small Block Chevy K1-FX Series -21cc Dish Top Forged Piston Set. 4.040 bore](http://dssracing.com/cdn/shop/products/FX1_801bdaf1-48d4-4020-97e8-8db224656dac_400x@2x.jpg?v=1678074859)
![Load image into Gallery viewer, DISCONTINUED USE K1-2475-4040 408 Small Block Chevy K1-FX Series -21cc Dish Top Forged Piston Set. 4.040 bore](http://dssracing.com/cdn/shop/products/kbox_6ff916b4-0bf3-401b-a960-713aca41c3e3_400x@2x.jpg?v=1678074859)
Engine Brand: Chevy
Engine Family: Small Block Chevy
Engine Size: 408
With/Without Rings: Includes Rings
Cylinder Bore Size: 4.040 in - 102.54 mm
Ring Width: 1.2/1.2/3MM
Compression Height: 1.000"
Pin Diameter: .927
Connecting Rod Length: 6.000"
Crankshaft Stroke: 4.000"
Piston Series: 1-FX Series
Alloy: Forged 4032
Cylinder Head: SBC 23 Degree
TDC Assembly Height: 9.000
Piston Top Aprox. Comp. Ratio:
Chamber | Comp. Ratio |
---|---|
58cc | 10.61 to 1 |
64cc | 9.99 to 1 |
70cc | 9.45 to 1 |
Engine Brand: Chevy
Engine Family: Small Block Chevy
Engine Size: 408
With/Without Rings: Includes Rings
Cylinder Bore Size: 4.040 in - 102.54 mm
Ring Width: 1.2/1.2/3MM
Compression Height: 1.000"
Pin Diameter: .927
Connecting Rod Length: 6.000"
Crankshaft Stroke: 4.000"
Piston Series: 1-FX Series
Alloy: Forged 4032
Cylinder Head: SBC 23 Degree
TDC Assembly Height: 9.000
Piston Top Aprox. Comp. Ratio:
Chamber | Comp. Ratio |
---|---|
58cc | 10.61 to 1 |
64cc | 9.99 to 1 |
70cc | 9.45 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)