Head, Racing, GX270 & GX390 - Aftermarket Core (Chinese)

Low cost way to add to the performance. Race Head, race prepped Aftermarket head with choice of Aftermarket, Honda, or Stainless Valves. Heads can be fitted with either single or dual springs at no charge.

Options including Porting and Milling to choice of compression ratio

Heads are typically built to order.



Head, Racing, GX270 & GX240 : Genuine Honda Core

All heads use Genuine Honda cores (these flow better, are less porous, and stronger than Aftermarket heads). Heads are ported, bead blasted, flowed, & milled. Choice of OEM or 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.
GX270 Heads have 32mm Intake.
Options including Porting and Milling to choice of compression ratio
High Torque Heads use small port castings to increase velocity maximize low end power at some loss of high end rpm.
Max HP Heads use large port castings to increase hign rpm power at some loss of low end torque

GX270 heads will fit 240s,
.
Heads are typically built to order.





Head, Racing, GX390 & GX340 : Genuine Honda Core

All heads use Genuine Honda cores (these flow better, are less porous, and stronger than Aftermarket heads). Heads are ported, bead blasted, flowed, & milled. Choice of OEM or 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.
GX390 Heads have 36mm Intake (40mm is Optional).
Options including Porting and Milling to choice of compression ratio
High Torque Heads use small port castings to increase velocity maximize low end power at some loss of high end rpm.
Max HP Heads use large port castings to increase hign rpm power at some loss of low end torque

390 heads will fit 340s.
.
Heads are typically built to order.