Racing Big Head for 54mm Bore JOG90 AXIS90

[KN Planning JA01-0 Racing Big Head for 54mm Bore JOG90 Axis 90]
Racing-specific head for 54mm bore
Large size
*Because the head is larger than stock,
it offers superior cooling performance compared to stock,
but requires some cutting of the air shroud.
(Combustion Chamber)
Racing shape
*The combustion chamber is not like Yamaha's genuine one; it's a head processed by KN Planning into a racing head with no steps.
Number of fins: 14
Compatible models
Jog 90
Axis 90
*Images are for illustration purposes only. Product design and specifications are subject to change without notice. Please be aware of this.