Harley Engine
Power your bike with precision-engineered engine components like crankshafts, connecting rods, and complete engine systems. Check out our high-performance Harley engine parts for peak reliability and output.
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On Sale
S&S CYCLE Cylinder Head Kit - Big Twin 90-1504
S&S CYCLE
MSRP: $1,799.95Now: $1,619.96Was: $1,799.95S&S CYCLE Cylinder Head Kit Big Twin 90-1504S&S heads give great performance, and work with additional upgrades, Kits are fully assembled, and include stainless steel valves and high-lift springs (up to .640 lift), Intake manifold, pistons and gasket...09300008- SKU:
- 09300008
- Availability:
- Ships Same Business Day
- Weight:
- 24.75 LBS
- MATERIAL:
- ALUMINUM
- MATERIAL:
- STAINLESS STEEL
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- SUPER STOCK
- PRODUCT NAME:
- CYLINDER HEAD KIT
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
MSRP: $1,799.95Now: $1,619.96Was: $1,799.95 -
On Sale
S&S CYCLE Cylinder Head Kit - Big Twin 90-1491
S&S CYCLE
MSRP: $1,886.95Now: $1,698.26Was: $1,886.95S&S CYCLE Cylinder Head Kit Big Twin 90-1491Heads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars and valve keepers, Complete kits also include rocker cover gaskets, head gaskets and miscellaneous...09300013- SKU:
- 09300013
- Availability:
- Ships Same Business Day
- Weight:
- 24.85 LBS
- FEATURES:
- DUAL SPARK PLUG
- MODEL:
- SUPER STOCK
- PRODUCT NAME:
- CYLINDER HEAD KIT
- UNITS:
- KIT
- COLOR/FINISH:
- ALUMINUM
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.625'
- STYLE:
- HIGH COMPRESSION
MSRP: $1,886.95Now: $1,698.26Was: $1,886.95 -
On Sale
S&S CYCLE Cylinder Head Kit - Big Twin 90-1496
S&S CYCLE
MSRP: $1,723.95Now: $1,551.56Was: $1,723.95S&S CYCLE Cylinder Head Kit Big Twin 90-1496Heads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars and valve keepers, Complete kits also include rocker cover gaskets, head gaskets and miscellaneous...09300015- SKU:
- 09300015
- Availability:
- Ships Same Business Day
- Weight:
- 25.56 LBS
- MODEL:
- SUPER STOCK
- PRODUCT NAME:
- CYLINDER HEAD KIT
- STYLE:
- STOCK COMPRESSION
- BORE SIZE IMPERIAL:
- 3.4375'
- COLOR/FINISH:
- ALUMINUM
- FEATURES:
- SINGLE SPARK PLUG
- UNITS:
- KIT
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
MSRP: $1,723.95Now: $1,551.56Was: $1,723.95 -
On Sale
S&S CYCLE Performance Replacement Head 106-6059
S&S CYCLE
MSRP: $1,468.95Now: $1,322.06Was: $1,468.95S&S CYCLE Performance Replacement Head 106-6059S&S heads are available to be used with stock-style flat-top pistons, Kits are fully assembled, and include stainless steel valves and high-lift (.585") springs, Intake manifold and gasket kits are sold...09300154- SKU:
- 09300154
- Availability:
- Ships Same Business Day
- Weight:
- 24.60 LBS
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- DISPLACEMENT:
- 76 CC
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- CYLINDER HEAD KIT
- COLOR/FINISH:
- POWDER-COATED
- MATERIAL:
- ALUMINUM
- MODEL:
- SUPER STOCK
MSRP: $1,468.95Now: $1,322.06Was: $1,468.95 -
On Sale
S&S CYCLE Cylinder Head Kit 90-1488
S&S CYCLE
MSRP: $1,886.95Now: $1,698.26Was: $1,886.95S&S CYCLE Cylinder Head Kit 90-1488Heads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars and valve keepers, Complete kits also include rocker cover gaskets, head gaskets and miscellaneous hardware with...09300133- SKU:
- 09300133
- Availability:
- Ships Same Business Day
- Weight:
- 24.24 LBS
- FEATURES:
- DUAL SPARK PLUG
- MODEL:
- SUPER STOCK
- PRODUCT NAME:
- CYLINDER HEAD KIT
- STYLE:
- STOCK COMPRESSION
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ALUMINUM
- MATERIAL:
- IRON
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.625'
- MATERIAL:
- CAST
MSRP: $1,886.95Now: $1,698.26Was: $1,886.95 -
On Sale
S&S CYCLE Cylinder Head Kit 90-1499
S&S CYCLE
MSRP: $1,805.95Now: $1,625.36Was: $1,805.95S&S CYCLE Cylinder Head Kit 90-1499Heads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars and valve keepers, Complete kits also include rocker cover gaskets, head gaskets and miscellaneous hardware with...09300134- SKU:
- 09300134
- Availability:
- Ships Same Business Day
- Weight:
- 24.01 LBS
- MODEL:
- SUPER STOCK
- PRODUCT NAME:
- CYLINDER HEAD KIT
- STYLE:
- STOCK COMPRESSION
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.625'
- MATERIAL:
- CAST
- COLOR/FINISH:
- ALUMINUM
- FEATURES:
- SINGLE SPARK PLUG
- MATERIAL:
- IRON
- UNITS:
- KIT
MSRP: $1,805.95Now: $1,625.36Was: $1,805.95 -
On Sale
S&S CYCLE Exhaust Stud Flange 50-0493
S&S CYCLE
MSRP: $7.95Now: $7.16Was: $7.95S&S CYCLE Exhaust Stud Flange 50-04935/16-18, 5/16-24 x 1.910", Zinc-plated, Steel, Made in the U.S.A.09300136- SKU:
- 09300136
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
MSRP: $7.95Now: $7.16Was: $7.95 -
On Sale
S&S CYCLE Replacement Silicone Solenoid Caps 55-1009
S&S CYCLE
MSRP: $9.95Now: $8.96Was: $9.95S&S CYCLE Replacement Silicone Solenoid Caps 55-1009Replacement silicone solenoid caps for S&S electronic and manual compression release kits, Made in the U.S.A.09300137- SKU:
- 09300137
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- WHITE
- MATERIAL:
- SILICONE
- PRODUCT NAME:
- CAP
- TYPE:
- COMPRESSION RELEASE
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $9.95Now: $8.96Was: $9.95 -
On Sale
S&S CYCLE Valve Spring Shim 90-2087
S&S CYCLE
MSRP: $7.95Now: $7.16Was: $7.95S&S CYCLE Valve Spring Shim 90-2087.574" x 1.450" x .030", Black, steel construction09300138- SKU:
- 09300138
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- BLACK
- TYPE:
- VALVE SPRING
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $7.95Now: $7.16Was: $7.95 -
On Sale
S&S CYCLE Cylinder Heads - Black 900-0251
S&S CYCLE
MSRP: $1,695.95Now: $1,526.36Was: $1,695.95S&S CYCLE Cylinder Heads Black 900-0251High port flow gives great performance now, and more later when additional upgrades are done, Heads are fully assembled with springs and valves, Compression ratios vary depending on cylinder heads chosen, pistons...09300139- SKU:
- 09300139
- Availability:
- Ships Same Business Day
- Weight:
- 29.30 LBS
- COLOR/FINISH:
- BLACK
- DISPLACEMENT:
- 79 CC
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- COLOR/FINISH:
- POWDER-COATED
- MATERIAL:
- ALUMINUM
- MODEL:
- SUPER STOCK
- COLOR/FINISH:
- WRINKLE BLACK
- PRODUCT NAME:
- CYLINDER HEAD KIT
MSRP: $1,695.95Now: $1,526.36Was: $1,695.95 -
On Sale
S&S CYCLE Performance Replacement Head 106-6064
S&S CYCLE
MSRP: $1,553.95Now: $1,398.56Was: $1,553.95S&S CYCLE Performance Replacement Head 106-6064S&S heads are available to be used with stock-style flat-top pistons, Kits are fully assembled, and include stainless steel valves and high-lift (.585") springs, Intake manifold and gasket kits are sold...09300141- SKU:
- 09300141
- Availability:
- Ships Same Business Day
- Weight:
- 25.20 LBS
- DISPLACEMENT:
- 76 CC
- UNITS:
- PAIR
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- POWDER-COATED
- MATERIAL:
- ALUMINUM
- MODEL:
- SUPER STOCK
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- CYLINDER HEAD KIT
MSRP: $1,553.95Now: $1,398.56Was: $1,553.95 -
On Sale
S&S CYCLE Spring Kit - .605" - M8 900-0958
S&S CYCLE
MSRP: $395.95Now: $356.36Was: $395.95S&S CYCLE Spring Kit .605" M8 900-0958Unique S&S design dual-spring kit reduces the risk of valve float, For valve lift with 1.800"/130 lb. installed height, 325 lb. at max lift, Includes springs, top and bottom collars, keeper shims and valve seals,...09262972- SKU:
- 09262972
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- PRODUCT NAME:
- SPRING KIT
- SPRING SEAT PRESSURE:
- 178 LB
- UNITS:
- KIT
- MODEL:
- SIDEWINDER
- RIDING STYLE:
- STREET
- SPRING LIFT:
- 0,605'
- SPRING LIFT IMPERIAL:
- 0.605'
- SPRING OPEN PRESSURE:
- 376 LB
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- TYPE:
- VALVE
- APPLICATION:
- EXHAUST
MSRP: $395.95Now: $356.36Was: $395.95 -
On Sale
S&S CYCLE GUIDE VALVE C.I. 84- 90-2210
S&S CYCLE
MSRP: $58.95Now: $53.06Was: $58.95S&S CYCLE GUIDE VALVE C.I. 84- 90-2210Cast iron intake/exhaust guide, Fits S&S Super Stock and stock Harley-Davidson cylinder heads, Guide ID measures aprox. .309”/.310” with enough material left for proper clearancing, Made in the U.S.A.09262893- SKU:
- 09262893
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
MSRP: $58.95Now: $53.06Was: $58.95 -
On Sale
S&S CYCLE Valve Guide - +.001" 90-2211
S&S CYCLE
MSRP: $81.95Now: $73.76Was: $81.95S&S CYCLE Valve Guide +.001" 90-2211Cast iron intake/exhaust guide, Fits S&S Super Stock and stock Harley-Davidson cylinder heads, Guide ID measures aprox. .309"/.310" with enough material left for proper clearancing, Made in the U.S.A.09262894- SKU:
- 09262894
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- VALVE GUIDE
- UNITS:
- EACH
- OVERBORE IMPERIAL:
- OVERSIZE (+0.001')
MSRP: $81.95Now: $73.76Was: $81.95 -
On Sale
S&S CYCLE Valve Guide - +.002" 90-2212
S&S CYCLE
MSRP: $125.95Now: $113.36Was: $125.95S&S CYCLE Valve Guide +.002" 90-2212Cast iron intake/exhaust guide, Fits S&S Super Stock and stock Harley-Davidson cylinder heads, Guide ID measures aprox. .309"/.310" with enough material left for proper clearancing, Made in the U.S.A.09262921- SKU:
- 09262921
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- OVERBORE IMPERIAL:
- OVERSIZE (+0.002')
- PRODUCT NAME:
- VALVE GUIDE
- UNITS:
- EACH
- RIDING STYLE:
- STREET
MSRP: $125.95Now: $113.36Was: $125.95 -
On Sale
S&S CYCLE Springs - .585" - Twin Cam 900-0594
S&S CYCLE
MSRP: $183.95Now: $165.56Was: $183.95S&S CYCLE Springs .585" Twin Cam 900-0594Unique S&S design dual-spring kit reduces the risk of valve float, For valve lift with 1.800"/130 lb. installed height, 325 lb. at max lift, Includes springs, top and bottom collars, keeper shims and valve seals,...09262723- SKU:
- 09262723
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- APPLICATION:
- EXHAUST
- RIDING STYLE:
- STREET
- SPRING LIFT:
- 0,585'
- SPRING OPEN PRESSURE:
- 325 LB
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- SPRING KIT
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- SPRING LIFT IMPERIAL:
- 0.585'
- UNITS:
- KIT
MSRP: $183.95Now: $165.56Was: $183.95 -
On Sale
S&S CYCLE Spring Kit - .650" 900-0050
S&S CYCLE
MSRP: $254.95Now: $229.46Was: $254.95S&S CYCLE Spring Kit .650" 900-0050Include springs, upper and lower collars and keys, For valve lift to .650" with 1.860"/178 lbs. installed height, 376 lbs. at max lift, Max 6500 rpm, Made in the U.S.A.09262056- SKU:
- 09262056
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MODEL:
- SIDEWINDER
- SPRING SEAT PRESSURE:
- 178 LB
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- STREET
- SPRING LIFT:
- 0,650'
- SPRING LIFT IMPERIAL:
- 0.650'
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- SPRING OPEN PRESSURE:
- 376 LB
- TYPE:
- VALVE
MSRP: $254.95Now: $229.46Was: $254.95 -
On Sale
S&S CYCLE Valve Springs - .650" - Twin Cam 106-5909
S&S CYCLE
MSRP: $257.95Now: $232.16Was: $257.95S&S CYCLE Valve Springs .650" Twin Cam 106-5909Include springs, upper and lower collars and keys, For valve lift to .650" with 1.860"/178 lbs. installed height, 376 lbs. at max lift, Max 6500 rpm, Made in the U.S.A.09262069- SKU:
- 09262069
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- SPRING LIFT:
- 0,650'
- UNITS:
- KIT
- MODEL:
- SIDEWINDER
- SPRING OPEN PRESSURE:
- 376 LB
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- SPRING KIT
- SPRING SEAT PRESSURE:
- 178 LB
- TYPE:
- VALVE
- APPLICATION:
- INTAKE
- RIDING STYLE:
- STREET
- SPRING LIFT IMPERIAL:
- 0.650'
MSRP: $257.95Now: $232.16Was: $257.95 -
On Sale
S&S CYCLE Cam - 465G - M8 310-1001A
S&S CYCLE
MSRP: $1,774.95Now: $1,597.46Was: $1,774.95S&S CYCLE Cam 465G M8 310-1001APrecision Machined from Billet Aluminum, Blue Anodized Finish, Passage Plugs Removable for servicing, Independent Scavenge Sections for Flywheel Cavity and Cam Chest, Debris Screens in both scavenge pickups, Magnet in Cam...09251299- SKU:
- 09251299
- Availability:
- Ships Same Business Day
- Weight:
- 12.25 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- FEATURES:
- WATER COOLED
- GRIND:
- 465G
- PRODUCT NAME:
- CAMCHEST KIT
- TYPE:
- GEAR
MSRP: $1,774.95Now: $1,597.46Was: $1,774.95 -
On Sale
S&S CYCLE Cam - 475G - M8 310-1002A
S&S CYCLE
MSRP: $1,774.95Now: $1,597.46Was: $1,774.95S&S CYCLE Cam 475G M8 310-1002ACamshaft gear drive kits increase valve timing accuracy by eliminating timing chain lash and loosely-fit stock chain drive, Reverses the rear cam's direction of rotation, providing additional operating clearance between cam...09251300- SKU:
- 09251300
- Availability:
- Ships Same Business Day
- Weight:
- 12.25 LBS
- GRIND:
- 475G
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- FEATURES:
- WATER COOLED
- PRODUCT NAME:
- CAMCHEST KIT
- TYPE:
- GEAR
- UNITS:
- KIT
MSRP: $1,774.95Now: $1,597.46Was: $1,774.95
