502 Series Performance Head W/ seats and guides 40 Intake 35.5 Exhaust 912 Gauge to Dashboard O-ring and

Gauge to Dashboard O-ring and detailed instructions

This is a set of standard 87mm slip-in Type 1 pistons and cylinders

(Specifywhen ordering)

Engine size:2412cc with 71mm crank

The ultimate in cooling efficiency

502 Series Performance Head W/ seats and guides 40 Intake 35.5 Exhaust 912 Gauge to Dashboard O-ring andMade from an AA 502 Series Casting, It is set up to build the performance Head of your needs. It comes with Seats 40x35. 5, Guides, with a 12mm plug hole. The 502 Series comes with our Stage 2 porting with a modernized combustion chamber for increased head flow & performance. There is a second Full Fin, so you can Fly cut your heads deeper to achieve almost any desired Head CC volume needed. Blocked off rocker stud bosses, to eliminate the O ring and