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
-
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-171WG
REVOLUTION PERFORMANCE, LLC
$1,529.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311043- SKU:
- 09311043
- Availability:
- Ships Same Business Day
- Weight:
- 21.31 LBS
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- COLOR/FINISH:
- GRANITE
- COLOR/FINISH:
- HIGHLIGHTED FINS
- DISPLACEMENT:
- 117'
- BORE SIZE IMPERIAL:
- 4.125'
- UNITS:
- KIT
$1,529.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-172WB
REVOLUTION PERFORMANCE, LLC
$1,529.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311044- SKU:
- 09311044
- Availability:
- Ships Same Business Day
- Weight:
- 21.51 LBS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- HIGHLIGHTED FINS
- DISPLACEMENT:
- 117'
- BORE SIZE IMPERIAL:
- 4.125'
- UNITS:
- KIT
- STROKE LENGTH IMPERIAL:
- 4-3/8'
$1,529.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-129W
REVOLUTION PERFORMANCE, LLC
$1,599.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311048- SKU:
- 09311048
- Availability:
- Ships Same Business Day
- Weight:
- 21.21 LBS
- BORE SIZE IMPERIAL:
- 4.250'
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- HIGHLIGHTED FINS
- DISPLACEMENT:
- 131'
- STROKE LENGTH IMPERIAL:
- 4-5/8'
- UNITS:
- KIT
$1,599.95Qty in Cart: 0Quantity:Price:$1,599.95Subtotal: -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-135W
REVOLUTION PERFORMANCE, LLC
$1,599.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311049- SKU:
- 09311049
- Availability:
- Ships Same Business Day
- Weight:
- 21.26 LBS
- DISPLACEMENT:
- 131'
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 4.250'
- COLOR/FINISH:
- GRANITE
- COLOR/FINISH:
- HIGHLIGHTED FINS
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-5/8'
$1,599.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-611W
REVOLUTION PERFORMANCE, LLC
$1,899.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311050- SKU:
- 09311050
- Availability:
- Ships Same Business Day
- Weight:
- 23.56 LBS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- BORE SIZE IMPERIAL:
- 4.500'
- COLOR/FINISH:
- HIGHLIGHTED FINS
- UNITS:
- KIT
- DISPLACEMENT:
- 139'
$1,899.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-616W
REVOLUTION PERFORMANCE, LLC
$1,899.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311052- SKU:
- 09311052
- Availability:
- Ships Same Business Day
- Weight:
- 23.51 LBS
- COLOR/FINISH:
- BLACK
- DISPLACEMENT:
- 143'
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-1/2'
- BORE SIZE IMPERIAL:
- 4.500'
- COLOR/FINISH:
- HIGHLIGHTED FINS
- UNITS:
- KIT
$1,899.95Qty in Cart: 0Quantity:Price:$1,899.95Subtotal: -
REVOLUTION PERFORMANCE, LLC Cylinder Kit - 85" - Natural Silver RP201-213W
REVOLUTION PERFORMANCE, LLC
$1,479.95Revolution™ aerospace-grade all-aluminum cylinders with nickel-silicon-carbide electroplated bores, which means NO SLEEVING; allows larger bore sizes and less friction for more horsepower, lower temps, and a longer lifespan, True bolt-on kit that...09311057- SKU:
- 09311057
- Availability:
- Ships Same Business Day
- Weight:
- 20.96 LBS
- COLOR/FINISH:
- SILVER
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3-9/16'
- PRODUCT NAME:
- BIG BORE CYLINDER KIT
- FEATURES:
- FLAT TOP
- RIDING STYLE:
- STREET
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
- DISPLACEMENT:
- 85'
$1,479.95Qty in Cart: 0Quantity:Price:$1,479.95Subtotal: -
REVOLUTION PERFORMANCE, LLC Cylinder Kit - 85" - Black with Highlighted Fins RP201-212W
REVOLUTION PERFORMANCE, LLC
$1,479.95Revolution™ aerospace-grade all-aluminum cylinders with nickel-silicon-carbide electroplated bores, which means NO SLEEVING; allows larger bore sizes and less friction for more horsepower, lower temps, and a longer lifespan, True bolt-on kit that...09311058- SKU:
- 09311058
- Availability:
- Ships Same Business Day
- Weight:
- 22.00 LBS
- COLOR/FINISH:
- HIGHLIGHTED FINS
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- BORE SIZE IMPERIAL:
- 3-9/16'
- DISPLACEMENT:
- 85'
- PRODUCT NAME:
- BIG BORE CYLINDER KIT
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
- COLOR/FINISH:
- BLACK
- FEATURES:
- FLAT TOP
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$1,479.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit - 109" - Black with Highlighted Fins RP201-216W
REVOLUTION PERFORMANCE, LLC
$1,455.95Revolution™ aerospace-grade all-aluminum cylinders with nickel-silicon-carbide electroplated bores which means NO SLEEVING; allows larger bore sizes and less friction for more horsepower, lower temps and a longer lifespan, Monster power in a package...09311064- SKU:
- 09311064
- Availability:
- Ships Same Business Day
- Weight:
- 19.36 LBS
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3-7/8'
- DISPLACEMENT:
- 109'
- MODEL:
- MONSTER
- PRODUCT NAME:
- BIG BORE CYLINDER KIT
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-5/8'
- COLOR/FINISH:
- HIGHLIGHTED FINS
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
$1,455.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-404W
REVOLUTION PERFORMANCE, LLC
$1,343.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311065- SKU:
- 09311065
- Availability:
- Ships Same Business Day
- Weight:
- 18.06 LBS
- BORE SIZE IMPERIAL:
- 3.5625'
- DISPLACEMENT:
- 1250 CC
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- NATURAL
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- STROKE LENGTH IMPERIAL:
- 3-13/16'
- UNITS:
- KIT
$1,343.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-405W
REVOLUTION PERFORMANCE, LLC
$1,343.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311066- SKU:
- 09311066
- Availability:
- Ships Same Business Day
- Weight:
- 18.16 LBS
- BORE SIZE IMPERIAL:
- 3.5625'
- COLOR/FINISH:
- HIGHLIGHTED FINS
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- DISPLACEMENT:
- 1250 CC
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 3-13/16'
- UNITS:
- KIT
$1,343.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-406W
REVOLUTION PERFORMANCE, LLC
$1,343.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311067- SKU:
- 09311067
- Availability:
- Ships Same Business Day
- Weight:
- 18.16 LBS
- BORE SIZE IMPERIAL:
- 3.5625'
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- DISPLACEMENT:
- 1250 CC
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 3-13/16'
- UNITS:
- KIT
$1,343.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-414W
REVOLUTION PERFORMANCE, LLC
$1,343.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311068- SKU:
- 09311068
- Availability:
- Ships Same Business Day
- Weight:
- 17.96 LBS
$1,343.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-411W
REVOLUTION PERFORMANCE, LLC
$1,479.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311072- SKU:
- 09311072
- Availability:
- Ships Same Business Day
- Weight:
- 17.61 LBS
$1,479.95 -
DRAG SPECIALTIES Front ISO-Mount - Rubber 72834
DRAG SPECIALTIES
$27.76Urethane motor mount specially designed to out-last and out-dampen the OEM partDS243515- SKU:
- DS243515
- Availability:
- Ships Same Business Day
- Weight:
- 0.58 LBS
- PRODUCT NAME:
- MOUNT
- TYPE:
- ENGINE
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- MATERIAL:
- POLYURETHANE
- MATERIAL:
- RUBBER
- MOUNTING POSITION:
- FRONT
$27.76Qty in Cart: 0Quantity:Price:$27.76Subtotal: -
DRAG SPECIALTIES Cam Chain Tensioner 87623
DRAG SPECIALTIES
$91.62Stock replacement hydraulic cam chain tensioners09251162- SKU:
- 09251162
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- TYPE:
- CAM
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- PRODUCT NAME:
- TENSIONER
$91.62 -
DRAG SPECIALTIES Braided Oil/Fuel Line - Stainless Steel - 5/16" - 25' 096613-BX-LB6
DRAG SPECIALTIES
$180.20Can be used for any oil and gas applications, Not to be used with fuel over 10% alcoholDS096613- SKU:
- DS096613
- Availability:
- Ships Same Business Day
- Weight:
- 4.25 LBS
- HOSE SIZE:
- -5
- INSIDE DIAMETER IMPERIAL:
- 5/16'
- PRODUCT NAME:
- HOSE
- STYLE:
- BRAIDED
- TYPE:
- FUEL
- UNITS:
- ROLL
- BASE FINISH:
- NATURAL
- LENGTH IMPERIAL:
- 25'
- COLOR/FINISH:
- STAINLESS STEEL
- INSIDE DIAMETER METRIC:
- 7.9 MM
- LENGTH METRIC:
- 7.62 M
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- STREET
- TYPE:
- OIL
$180.20 -
On Sale
S&S CYCLE Big Bore Cylinder Set 910-0739
S&S CYCLE
MSRP: $970.95Now: $873.86Was: $970.95Bolt on Cylinder Set For M8 Models09310877- SKU:
- 09310877
- Availability:
- Ships Same Business Day
- Weight:
- 25.70 LBS
- COLOR/FINISH:
- BLACK GRANITE
- STYLE:
- BIG BORE
- DISPLACEMENT:
- 124'
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 4.250'
- COLOR/FINISH:
- HIGHLIGHTED FINS
- PRODUCT NAME:
- CYLINDER KIT
- UNITS:
- KIT
MSRP: $970.95Now: $873.86Was: $970.95 -
On Sale
S&S CYCLE Gasket Set - 3.5" - V2 Big Twin 90-1905
S&S CYCLE
MSRP: $75.95Now: $68.36Was: $75.95Gasket Kit contains head gaskets, base gaskets and exhaust pipe gaskets (rocker box gaskets are not included due to the variety of available rocker box styles), Made in the U.S.A.09340325- SKU:
- 09340325
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE:
- 3,500'
- BORE SIZE IMPERIAL:
- 3.500'
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER BASE
- RIDING STYLE:
- STREET
- TYPE:
- CYLINDER HEAD
- TYPE:
- EXHAUST
- UNITS:
- SET
MSRP: $75.95Now: $68.36Was: $75.95 -
On Sale
S&S CYCLE Easy Start Cam Kit - Twin Cam 330-0438
S&S CYCLE
MSRP: $1,070.95Now: $963.86Was: $1,070.95Start any engine regardless of displacement or compression ratio with a stock starter, Save your starter and battery; tested for 10,000 starts without running battery down, Allow for easy start by initially reducing crank compression, but once the engine...09251048- SKU:
- 09251048
- Availability:
- Ships Same Business Day
- Weight:
- 5.60 LBS
- APPLICATION:
- EXHAUST
- EXHAUST CLOSE IMPERIAL:
- 37.5°
- EXHAUST OPEN IMPERIAL:
- 58.5°
- GRIND:
- 635 SERIES
- PRODUCT NAME:
- CAM KIT
- APPLICATION:
- INTAKE
- RIDING STYLE:
- STREET
- EXHAUST LIFT IMPERIAL:
- 0.635'
- INTAKE CLOSE IMPERIAL:
- 43.5°
- INTAKE DURATION IMPERIAL:
- 243°
- INTAKE LIFT IMPERIAL:
- 0.635'
- EXHAUST DURATION IMPERIAL:
- 276°
- FEATURES:
- INCLUDES INSTALLATION KIT
- INTAKE OPEN IMPERIAL:
- 19.5°
- MODEL:
- EASY START
- TYPE:
- GEAR
- UNITS:
- KIT
MSRP: $1,070.95Now: $963.86Was: $1,070.95
