Harley Engine
Harley Bike Engine Parts at JJ Motorsports
Rebuild and boost your Harley's engine with premium parts from JJ Motorsports. Our inventory features complete gasket sets, piston kits, oil filters, pushrod tubes, and coolers designed for maximum strength, leak-free sealing, and high-performance in extreme conditions. Compatible with Big Twins, Softail, Touring, and more, these components support top-end overhauls, oil management, and durability for street rides or custom builds.
Shop trusted brands like Drag Specialties for magnetic filters and Wiseco for forged pistons. Explore related categories such as Harley air and fuel for carb tuning or Harley drivetrain for transmission upgrades.
Top Harley Engine Products
- DRAG SPECIALTIES Magnetic Ring Oil Filter - Chrome - 3-1/4" 140003HP-BX18 – Captures metal particles with pressure relief.
- WISECO Piston Kit .010 .883 XL K1656 – Forged aluminum with rings, pins, and circlips for rebuilds.
- DRAG SPECIALTIES Pushrod Tube Kit Big Twin 75711 – Includes tubes, clips, cups, and springs for complete engine.
- ULTRACOOL Below Regulator Mount Oil Cooler Stainless Steel RF-2CSS – Fits S&S 111/124/143 engines with machined adapter.
- PAUGHCO Ribbed Teardrop Air Cleaner 701-200 – Chrome-plated aluminum with mini filter.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
On Sale
S&S CYCLE Replacement Rings 94-1212X
S&S CYCLE
MSRP: $64.95Now: $58.46Was: $64.95Replacement ring set for S&S Pistons941212- SKU:
- 941212
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.625'
- PISTON SIZE IMPERIAL:
- +0.020'
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
- UNITS:
- SET
MSRP: $64.95Now: $58.46Was: $64.95 -
On Sale
S&S CYCLE Replacement Rings 94-1300X
S&S CYCLE
MSRP: $63.95Now: $57.56Was: $63.95Replacement ring set for S&S Pistons941300- SKU:
- 941300
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PISTON SIZE IMPERIAL:
- STANDARD
- BORE SIZE IMPERIAL:
- 4.000'
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
- UNITS:
- SET
- PRODUCT NAME:
- PISTON RING
MSRP: $63.95Now: $57.56Was: $63.95 -
On Sale
S&S CYCLE Replacement Rings 94-1301X
S&S CYCLE
MSRP: $63.95Now: $57.56Was: $63.95Replacement ring set for S&S Pistons941301- SKU:
- 941301
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE IMPERIAL:
- 4.000'
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
- UNITS:
- SET
- PISTON SIZE IMPERIAL:
- +0.010'
- RIDING STYLE:
- STREET
MSRP: $63.95Now: $57.56Was: $63.95 -
On Sale
S&S CYCLE Replacement Rings 94-1400X
S&S CYCLE
MSRP: $63.95Now: $57.56Was: $63.95Replacement ring set for S&S Pistons941400- SKU:
- 941400
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 4.125'
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
- UNITS:
- SET
- PISTON SIZE IMPERIAL:
- STANDARD
MSRP: $63.95Now: $57.56Was: $63.95 -
On Sale
S&S CYCLE Replacement Rings 94-1401X
S&S CYCLE
MSRP: $66.95Now: $60.26Was: $66.95Replacement ring set for S&S Pistons941401- SKU:
- 941401
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PISTON SIZE IMPERIAL:
- +0.010'
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
- UNITS:
- SET
- BORE SIZE IMPERIAL:
- 4.125'
MSRP: $66.95Now: $60.26Was: $66.95 -
On Sale
S&S CYCLE Adjustable Pushrods - XL 93-5022
S&S CYCLE
MSRP: $152.95Now: $137.66Was: $152.95.4375" diameter chromoly steel for maximum strength, Rocker boxes must be removed for installation or removal, Made in the U.S.A.935022- SKU:
- 935022
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- MATERIAL:
- CHROMOLY STEEL
- UNITS:
- 4 PACK
- PRODUCT NAME:
- PUSHROD SET
- RIDING STYLE:
- STREET
- STYLE:
- ADJUSTABLE
MSRP: $152.95Now: $137.66Was: $152.95 -
On Sale
S&S CYCLE Adjustable Pushrods - XL 93-5033
S&S CYCLE
MSRP: $152.95Now: $137.66Was: $152.95.4375" diameter chromoly steel for maximum strength, Rocker boxes must be removed for installation or removal, Made in the U.S.A.935033- SKU:
- 935033
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- PRODUCT NAME:
- PUSHROD SET
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
- MATERIAL:
- CHROMOLY STEEL
- STYLE:
- ADJUSTABLE
MSRP: $152.95Now: $137.66Was: $152.95 -
On Sale
S&S CYCLE Adjustable Pushrods - Big Twin 93-5076
S&S CYCLE
MSRP: $152.95Now: $137.66Was: $152.95.4375" diameter chromoly steel for maximum strength, Rocker boxes must be removed for installation or removal, Made in the U.S.A.935076- SKU:
- 935076
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- STYLE:
- ADJUSTABLE
- MATERIAL:
- CHROMOLY STEEL
- UNITS:
- 4 PACK
- PRODUCT NAME:
- PUSHROD SET
- RIDING STYLE:
- STREET
MSRP: $152.95Now: $137.66Was: $152.95 -
On Sale
S&S CYCLE Rocker Arm Shafts - Twin Cam 90-4036
S&S CYCLE
MSRP: $59.95Now: $53.96Was: $59.95Made in the U.S.A.904036- SKU:
- 904036
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MOUNTING POSITION:
- FRONT
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SHAFT
- RIDING STYLE:
- STREET
- APPLICATION:
- EXHAUST
- TYPE:
- ROCKER ARM
- UNITS:
- SET OF 4
MSRP: $59.95Now: $53.96Was: $59.95 -
On Sale
S&S CYCLE Rocker Box Gasket Kit 90-4091
S&S CYCLE
MSRP: $91.95Now: $82.76Was: $91.95Includes all required gaskets and O-rings for both rocker boxes904091- SKU:
- 904091
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- ROCKER BOX
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
MSRP: $91.95Now: $82.76Was: $91.95 -
On Sale
S&S CYCLE Die Cast Rocker Box - Evolution 90-4095
S&S CYCLE
MSRP: $1,279.95Now: $1,151.96Was: $1,279.95Positive O-ring seal ensures leak-free operation, Can be installed with the stock engine in the frame in most applications, Include rocker boxes, gaskets and mounting bolts, Assembler must supply rocker shafts and rocker arms for all rocker boxes, Rocker...904095- SKU:
- 904095
- Availability:
- Ships Same Business Day
- Weight:
- 12.28 LBS
- COLOR/FINISH:
- CHROME
- UNITS:
- PAIR
- BASE FINISH:
- CHROME
- MATERIAL:
- DIE-CAST
- PRODUCT NAME:
- ROCKER BOX
- RIDING STYLE:
- STREET
MSRP: $1,279.95Now: $1,151.96Was: $1,279.95 -
On Sale
S&S CYCLE Die Cast Rocker Box - Twin Cam 90-4110
S&S CYCLE
MSRP: $1,091.95Now: $982.76Was: $1,091.95Positive O-ring seal ensures leak-free operation, Can be installed with the stock engine in the frame in most applications, Include rocker boxes, gaskets and mounting bolts, Assembler must supply rocker shafts and rocker arms for all rocker boxes, Rocker...904110- SKU:
- 904110
- Availability:
- Ships Same Business Day
- Weight:
- 12.45 LBS
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- ROCKER BOX
- RIDING STYLE:
- STREET
- MATERIAL:
- DIE-CAST
- UNITS:
- PAIR
MSRP: $1,091.95Now: $982.76Was: $1,091.95Qty in Cart: 0Quantity:Price:MSRP: $1,091.95Now: $982.76Was: $1,091.95Subtotal: -
On Sale
S&S CYCLE Rocker Box Gasket Kit 90-4111
S&S CYCLE
MSRP: $71.95Now: $64.76Was: $71.95Includes all required gaskets and O-rings for both rocker boxes904111- SKU:
- 904111
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- FEATURES:
- FOR '99 - '17 TWIN CAM S&S ROCKER BOX
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
MSRP: $71.95Now: $64.76Was: $71.95 -
On Sale
S&S CYCLE Piston Kit 92-1060
S&S CYCLE
MSRP: $484.95Now: $436.46Was: $484.95These forged pistons are designed for use in S&S® Big Bore Hot Set Up Kits® for HD® Evolution® big twin engines, and S&S® 3-5/8" bore engines with S&S® Super Stock® cylinder heads and 4-1/4�, 4-1/2" and 4-5/8" stroke engines with stock diameter...921060- SKU:
- 921060
- Availability:
- Ships Same Business Day
- Weight:
- 2.78 LBS
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- DISPLACEMENT:
- 88'
- BORE SIZE IMPERIAL:
- 3.625'
- DISPLACEMENT:
- 93'
- DISPLACEMENT:
- 96'
- TYPE:
- REPLACEMENT
- BORE - OVERSIZE:
- STANDARD
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH IMPERIAL:
- 4-5/8'
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
MSRP: $484.95Now: $436.46Was: $484.95 -
On Sale
S&S CYCLE Piston Kit 92-1061
S&S CYCLE
MSRP: $484.95Now: $436.46Was: $484.95These forged pistons are designed for use in S&S® Big Bore Hot Set Up Kits® for HD® Evolution® big twin engines, and S&S® 3-5/8" bore engines with S&S® Super Stock® cylinder heads and 4-1/4�, 4-1/2" and 4-5/8" stroke engines with stock diameter...921061- SKU:
- 921061
- Availability:
- Ships Same Business Day
- Weight:
- 2.78 LBS
- DISPLACEMENT:
- 88'
- BORE - OVERSIZE:
- +0,010'
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH IMPERIAL:
- 4-5/8'
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.625'
- DISPLACEMENT:
- 93'
- DISPLACEMENT:
- 96'
- TYPE:
- REPLACEMENT
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
MSRP: $484.95Now: $436.46Was: $484.95 -
On Sale
S&S CYCLE Piston Kit 92-1062
S&S CYCLE
MSRP: $484.95Now: $436.46Was: $484.95These forged pistons are designed for use in S&S® Big Bore Hot Set Up Kits® for HD® Evolution® big twin engines, and S&S® 3-5/8" bore engines with S&S® Super Stock® cylinder heads and 4-1/4�, 4-1/2" and 4-5/8" stroke engines with stock diameter...921062- SKU:
- 921062
- Availability:
- Ships Same Business Day
- Weight:
- 2.78 LBS
- BORE - OVERSIZE:
- +0,020'
- BORE SIZE IMPERIAL:
- 3.625'
- DISPLACEMENT:
- 88'
- DISPLACEMENT:
- 96'
- TYPE:
- REPLACEMENT
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- PISTON MATERIAL:
- FORGED
- DISPLACEMENT:
- 93'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-5/8'
- UNITS:
- KIT
MSRP: $484.95Now: $436.46Was: $484.95 -
On Sale
S&S CYCLE Piston Kit 92-1400
S&S CYCLE
MSRP: $484.95Now: $436.46Was: $484.95Increase the displacement of 883cc and 1200cc engines to 1250cc at 10.3:1 compression, Cast Flat-Topped Replacement Piston Kits For 1984-'99 HD® Big Twins with Stock Heads or S&S Performance Replacement Heads, May be used with stock 1200cc cylinder...921400- SKU:
- 921400
- Availability:
- Ships Same Business Day
- Weight:
- 3.10 LBS
- BORE SIZE IMPERIAL:
- 4.000'
- DISPLACEMENT:
- 100'
- PISTON HEAD SHAPE:
- FLAT TOP
- DISPLACEMENT:
- 107'
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- TYPE:
- REPLACEMENT
- UNITS:
- KIT
MSRP: $484.95Now: $436.46Was: $484.95 -
On Sale
S&S CYCLE Piston Kit 92-1401
S&S CYCLE
MSRP: $484.95Now: $436.46Was: $484.95Increase the displacement of 883cc and 1200cc engines to 1250cc at 10.3:1 compression, Cast Flat-Topped Replacement Piston Kits For 1984-'99 HD® Big Twins with Stock Heads or S&S Performance Replacement Heads, May be used with stock 1200cc cylinder...921401- SKU:
- 921401
- Availability:
- Ships Same Business Day
- Weight:
- 3.15 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 4.000'
- DISPLACEMENT:
- 100'
- DISPLACEMENT:
- 107'
- PISTON MATERIAL:
- FORGED
- PISTON HEAD SHAPE:
- FLAT TOP
- BORE - OVERSIZE:
- +0,010'
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- TYPE:
- REPLACEMENT
- UNITS:
- KIT
MSRP: $484.95Now: $436.46Was: $484.95 -
On Sale
S&S CYCLE Piston Kit 92-1402
S&S CYCLE
MSRP: $484.95Now: $436.46Was: $484.95Increase the displacement of 883cc and 1200cc engines to 1250cc at 10.3:1 compression, Cast Flat-Topped Replacement Piston Kits For 1984-'99 HD® Big Twins with Stock Heads or S&S Performance Replacement Heads, May be used with stock 1200cc cylinder...921402- SKU:
- 921402
- Availability:
- Ships Same Business Day
- Weight:
- 3.15 LBS
- DISPLACEMENT:
- 107'
- PISTON HEAD SHAPE:
- FLAT TOP
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- BORE SIZE IMPERIAL:
- 4.000'
- DISPLACEMENT:
- 100'
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,020'
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- TYPE:
- REPLACEMENT
- UNITS:
- KIT
MSRP: $484.95Now: $436.46Was: $484.95 -
On Sale
S&S CYCLE Piston Kit 92-1410
S&S CYCLE
MSRP: $484.95Now: $436.46Was: $484.95Increase the displacement of 883cc and 1200cc engines to 1250cc at 10.3:1 compression, Cast Flat-Topped Replacement Piston Kits For 1984-'99 HD® Big Twins with Stock Heads or S&S Performance Replacement Heads, May be used with stock 1200cc cylinder...921410- SKU:
- 921410
- Availability:
- Ships Same Business Day
- Weight:
- 3.10 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- PISTON MATERIAL:
- FORGED
- BORE SIZE IMPERIAL:
- 4.000'
- PISTON HEAD SHAPE:
- FLAT TOP
- STROKE LENGTH IMPERIAL:
- 4-1/2'
- DISPLACEMENT:
- 113'
- TYPE:
- REPLACEMENT
- UNITS:
- KIT
MSRP: $484.95Now: $436.46Was: $484.95
