Defric coating (Lubricous film) is applied to the piston skirt, for a reduction in friction and loads as well as improved durability.
SR20DET Forged Piston KIT
Crown Volume *1
Projection Height *2
Reference C/R *3
Standard head GKξ≈8.4:1
Standard head GKξ≈8.6:1
*1:Crown volume is measured "from the piston shoulder"/"from the deck of the block".
*2:Piston shoulder height is measured from the deck of the block.
*3:The compression ratios given above are only to be taken as a guide, measurements are required.