S&S Cycle

1984–'99 big twins

1984–1999 Evolution ® 1926–1984 Vintage Engines Tools & Shop Supplies Warranty & Company Policy Appendix & Index

SUPER STOCK™ CYLINDER HEADS FOR 4" BORE S&S ENGINES FITMENT

• 4" bore S&S V-Series engines FEATURES AND BENEFITS • Special S&S 4" bore bolt pattern • Machined for S&S manual or electric compression releases • 2.000" intake valves and 1.605" exhaust valves

90-1015

• Special "cast-to-shape" intake ports with a special directional fin for improved air flow • Precision CNC machined from heat treated aircraft quality aluminum castings KIT CONTENTS • 2 fully assembled cylinder heads with S&S valve springs (.640" or .585" lift) • Threaded plugs to seal compression release holes

NOTES: Duetoexpandedstudpattern,theseheadswillnotfitonstockEvolution®engines 84cc heads are stock on 100" engines 93cc heads are stock on 107" and 113" engines Extra parts needed: Gasket Kit For S&S® 4" Bore Heads...................... 90-1909

REPLACEMENT PARTS: SEE PAGE 84

ASSEMBLED S&S® SUPER STOCK® HEAD KITS FOR 4" V-SERIES ENGINES

Finish

Description Valve Springs

Natural

Wrinkle Black

Polished

90-1015

-

-

84cc

.650" lift

90-1070 90-1282

.650" lift

90-1009 USA 2

90-1509 USA 2

93cc

90-1280

90-1281

.585" lift

ALL OTHER SPECIFICATIONS AND FINISHES ARE AVAILABLE THROUGH SPECIAL ORDER 106-5695* *Special Order: Download the Special Order Form at sscycle.com/soforms

CYLINDER HEADS FOR 41/8" BORE V-SERIES ENGINES FITMENT • 41/8" bore S&S V-Series engines FEATURES AND BENEFITS • Redesigned cooling fins—reduces mechanical noise • 2.00" intake - 1.605" exhaust • Complete head with .650 springs 91 cc 41/8" BORE S&S® REPLACEMENT CYLINDER HEADS Finish Part # Natural 90-1360 USA 3 Wrinkle Black 90-1361 USA 3 Polished 90-1362 USA 3

90-1362

NOTE: Replacement heads for existing engines with the old fin profile are available as complete front or rear head assemblies only, by special order.

REPLACEMENT PARTS: SEE PAGE 83

GASKET KITS FOR S&S SUPER STOCK™ CYLINDER HEADS Bore Size Part # 41/8" 90-1910 USA 3

ALL OTHER SPECIFICATIONS AND FINISHES ARE AVAILABLE THROUGH SPECIAL ORDER 90-1013* *Special Order: Download the Special Order Form at sscycle.com/soforms

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