10th Gen Honda Civic (Si) New Honda OEM block Darton sleeve

Fits: 10th Gen Honda Civic Si

Darton sleeve installed, ready-to-go Honda OEM blocks OEM bore. 

These will hold up to 900hp easy - all you need is your crank, rods and pistons, and other items for your own personal build.   Wait times are 1-3 months - please contact us with any questions, prior to ordering. 

NOTE: We do recommend Saenz rods with JE pistons for your build, as well as a Boundary oil pump.