501 Series Performance Head W/ seats and guides 42 Intake 37.5 Exhaust Type-4 Avoid having to send your

Avoid having to send your old crank to get reground

Part #VW9400T1SRLJE

Stroke: 76

New Chromoly Flywheel

501 Series Performance Head W/ seats and guides 42 Intake 37.5 Exhaust Type-4 Avoid having to send yourMade from an AA 501 Series Casting, It is set up to build the performance Head of your needs. It Comes with Seats 42x37. 5, Guides,with a 12mm plug hole. The 501 Series Castings come STD with: Increasedmaterialat the intakesurfacegivingyou theabilityto make much bigger ports. Amodernized Combustionchamber, for increased head flow & performance. AsecondFull Fin, soyoucanFlycutyourheads deeper to achieve almost any desired Head CC volume needed. Blocked