501 Series Performance Head W/ seats and guides 40 Intake 35.5 Exhaust black (2) Inner Wheel Bearings/Races

(2) Inner Wheel Bearings/Races

The Compression ratio is 7

These are forged Chromoly steel with high strength 3/8" Rod Bolts

Part # VW101T1JE

OEM Part#: 211 301 265A

501 Series Performance Head W/ seats and guides 40 Intake 35.5 Exhaust black (2) Inner Wheel Bearings/RacesMade from an AA 501 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 501 Series Castings come STD with: Increased material at the intake surface giving you the ability to make much bigger ports. A modernized Combustion chamber, for increased head flow & performance. A second Full Fin, so you can Fly cut your heads deeper to achieve almost any desired Head CC