S&S Cycle - S&S Performance Parts 2025 L - Volume 67

1984-'99

Phone: 608-627-1497

1 -2017-UP 2 -2007-'17 3 -1999-'06 4 -1984-'99 5 -1936-'84 6 -XL-RA1250 7 -BELTS & GASKETS 8 -TOOLS 9 -WARRANTY 10 -APPENDIX

Fitment • 1984–’99 big twins • Stock displacement • Stock bore strokers • Big bore engines up to 96"

Features And Benefits • Compatible with stock or other flat topped pistons • Heads can be decked 060" if higher compression is desired • Port design increases flow, while maintaining velocity specifically designed for stock and small displacement engines • Compatible with up to 585" lift cams with TDC lifts of 252" intake and 210" exhaust • Stock diameter ports allows installation of original intake manifolds and exhaust • Stock temperature sensor location for EFI equipped engines • High compression is 76cc, low compression is 82cc in chamber

Flow Comparison Chart

Valve Diameter

600" Lift Flow @ 10"

Cylinder Head Type

Intake Exhaust Intake

Exhaust

Stock HD®

1 840" 1 610" 125cfm 98cfm

S&S Performance Replacement

1 900" 1 605" 142cfm 109cfm

Kit Contents • Two complete heads with valves and springs

S&S® Super Stock® 2 000" 1 605" 158cfm 122cfm

S&S recommends that all clearances be checked with high lift cams, especially if the heads have been decked to increase compression Will NOT work with an aftermarket domed piston due to the combustion chamber location

Compression Ratio Comparison Chart

S&S® Performance Replacement

Engine Size

Stock HD®

High Compression 76cc

Low Compression 82cc

96"

10:1

9 5:1

9 75:1

80"

8 8:1

8 4:1

8 5:1

Performance Replacement Cylinder Heads For 1984–’99 Big Twins Finish Low Compression 82cc*

High Compression 76cc

Natural

106-6059

106-3466

Wrinkle Black 106-6064 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. *Used on V96 engines with flat top pistons 106-4570 (16696-92A)

Gasket Kits For S&S Performance Replacement Cylinder Heads Bore Size

Part #

31/2" 35/8"

90-1905 90-1906

Replacement Parts: page 4-65

4-35