Pay in 4 interest-free payments of $43.74 Learn more
Ships within 48 hours · Estimated delivery Aug 27 - Sep 1
Choose the size of carburetor that best fits your application
OEM Part#: 251 501 203
Sold as a pair or as each
stock length dipstick
Set at 120 psi
502 Series Performance Head W/ seats and guides 44 Intake 37.5 Exhaust opt-perf-crank-upg Choose the size of carburetorMade from an AA 502 Series Casting, It is set up to build the performance Head of your needs. It Comes with Seats 44x37. 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
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