TOP QUALITY AIRCRAFT 6061 T6 ALUMINUM IS USED FOR ALL AUR BILLET HEADS AND CYLINDERS,RACINGBILLET CNC POWER!
performance for everyday street riding. NOT 6,000 RPM. Street Heads come complete with 1.940 intakes, .650 lift springs, 76cc chamberst, are fully polished and wirk with stock intake manifold, atock exhaust and rocker covers.
Non-stock bolt patterns including 8 bolt.
3 different valve angles.
External oil drains.
Bigger valve and ports for high RPM or big motors. 
CNC Porting
Billet head being CNC ported to optimum shape for outstanding low & mid- range performance
Patrick Racing scores another first! we were the first to offer Billet Cylinder Heads and now we've done it again. CNC ported Stock Castings! Your EVO Big Twin heads, rapid turnaround, Big seats, 1.940 intakes, 650 lift springs, $795.00 a pair.
Patrick Racing Street heads and Cylinders for big Twins and Sportsters.
Fully CNC Ported,designed specifically for wide powerband, good drivabilly and "Roll-on" Patrick Racing Billet Cylinders
Billet Cylinders with forget JE Sportsman Racing Pistons, molly rings, wrist pins and gaskets. 10.25:1 compression ratio. Sizes available: 3 1/2", 3 5/8" and 3 13/16". bare cylinders are also available for custom builders.
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