S&S Cycle

CNC PORTED CYLINDER HEAD SERVICES

CNC PORTING SERVICE FEATURES AND BENEFITS • CNC machined ports are consistent—repeatable performance increase • High flow and high port velocity—great power without losing low RPM torque • Assembled with performance valves and your choice of .585" or .650" lift springs ready to bolt-on • Stock heads with S&S CNC porting are also available for outright sale in select models XL CNC • Available for 2004–’20 xl 883 and 1200cc engines • Combustion chamber volume of 60cc—For stock compression in 1200cc engines • 883 engines must to upgraded to 1200cc or greater • Perfect for the S&S 1200cc and 1250cc kits.

909-0011

CNC PORTING SERVICE FOR SPORTSTER® MODELS Description Part # CNC Porting Service—S&S Ports Your Heads 909-0011 CNC Ported Heads—Complete Set Sold Outright 909-0011 DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLE. NOT LEGAL FOR SALE OR USE NATIONWIDE ON ANY FEDERAL POLLUTION CONTROLLED MOTOR VEHICLE UNDER THE CLEAN AIR ACT

S&S® CNC PORTING SERVICE – SPECIFICATION COMPARISON—HARLEY-DAVIDSON® SPORTSTER® MODELS

Valve Size

Max TDC Lift

Port Flow

Chamber Volume

Heads

Max Valve Lift

Intake

Exhaust

Intake

Exhaust

Intake

Exhaust

Stock

1.805 1.830

1.575 1.575

.585 .650

–

–

218.2 cfm 186.7 cfm 249.3 cfm 206.0 cfm

60cc 60cc

CNC Ported by S&S

.213

.215

*Flow testing performed on a SuperFlow® 1020 flow bench at 28" of water test pressure at .600" lift. Heads tested are 2007-'13 style.

COMPRESSION RATIO

Heads

1200cc

With .03 Head Gaskets

Stock 60cc

9.7 9.7

10:1 10:1

CNC Ported by S&S 60cc

**As a general rule of thumb, for every 1cc decrease in chamber volume equals a .1 increase in compression ratio.

For xl applications. S&S recommends for use with cam TDC lifts no greater than: .213" intake, .215" exhaust to achieve .050" valve to valve clearance. CNC porting is not available for previously ported heads, heads that have been structurally damaged, or heads that are determined to be unserviceable during initial inspection. These heads will be returned to the customer without modification. In these cases, the customer will be notified and options will be reviewed. As an alternative, S&S heads or CNC ported stock heads are available for purchase. Due to variations in stock cylinder head castings, all inside surfaces of the ports may not“clean up”during machining. As a result, the inside of one or more ports may not appear to be completely machined. This does not effect performance and is not considered a defect. CNC porting is not currently available for Harley-Davidson® CVO engines or Screamin’Eagle® cylinder heads. NOTES

270 Order 608-627-1497 S&S Late Models 1999–up