All heads use Genuine Honda cores (these flow better, are less porous, and stronger than Aftermarket heads). Heads are ported, polished, bead blasted, flowed, & milled. Stainless Valves. Heads can be fitted with either single or dual springs. Single Springs recommended for 306 and smaller cams. Dual for 307 and larger cams.
High Torque Heads use small port castings to increase velocity maximize low end power at some loss of high end rpm. BEST FOR MOST APPLICATIONS
Max HP Heads Use Large Port Castings To Increase High rpm Power At Some Loss Of Low End Torque
GX270 heads will fit 240s,
Includes
Ported, Polished, & Bead Blasted
Stainless Intake & Exhaust Valves
Aluminum or Titanium Retainers
HD single or dual springs