Engine
2241 parts
Harley engine parts for Evo, Twin Cam, Milwaukee-Eight and Sportster motors. Jump to cams, big bore kits, heads, gaskets and seals or engine covers. Free US shipping over $100.
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Out of stock
Revolution Performance, Llc - RP201-171WG - Cylinder Kit - 117" - Granite with Highlighted Fins - Twin Cam
Revolution Performance
$1,529.95Revolution Performance, Llc - RP201-171WG - Cylinder Kit - 117" - Granite with Highlighted Fins - Twin CamFeaturesrevolution performance logoAerospace-grade all-aluminum cylinder with...$1,529.95 -
Out of stock
Revolution Performance, Llc - RP201-171W - Cylinder Kit - 117" - Black with Highlighted Fins - Twin Cam
Revolution Performance
$1,529.95Revolution Performance, Llc - RP201-171W - Cylinder Kit - 117" - Black with Highlighted Fins - Twin CamFeaturesrevolution performance logoAerospace-grade all-aluminum cylinder with...$1,529.95 -
Out of stock
Revolution Performance, Llc - RP201-111W - Cylinder Kit - 98" - Big Bore - Black with Highlighted Fins - Twin Cam
Revolution Performance
$1,479.95Revolution Performance, Llc - RP201-111W - Cylinder Kit - 98" - Big Bore - Black with Highlighted Fins - Twin CamFeaturesrevolution performance logoAerospace-grade all-aluminum cylinder with...$1,479.95 -
Out of stock
Revolution Performance, Llc - RP201-103W - Cylinder Kit - 98" - Big Bore - Black with Highlighted Fins - Twin Cam
Revolution Performance
$1,479.95Revolution Performance, Llc - RP201-103W - Cylinder Kit - 98" - Big Bore - Black with Highlighted Fins - Twin CamFeaturesrevolution performance logoAerospace-grade all-aluminum cylinder with...$1,479.95 -
Out of stock
S&S Cycle - 900-4119RA - Forged Standard Rocker Arm
S&S Cycle
MSRP: $122.95$84.95S&S Cycle - 900-4119RA - Forged Standard Rocker ArmFeaturesAn economical solution for stock rebuilds, and mild performance upgradesForged from 8620 steel for greater strength than stock or cast...MSRP: $122.95$84.95 -
Out of stock
S&S Cycle - 310-1271 - Cam Chest Kit without Cams - Chain Drive - Chrome Pushrods - Twin Cam
S&S Cycle
$1,522.95S&S Cycle - 310-1271 - Cam Chest Kit without Cams - Chain Drive - Chrome Pushrods - Twin CamFeaturesOil Pump/Cam Plate:Precision machined from billet aluminumPassage plugs are removable for...$1,522.95 -
Out of stock
S&S Cycle - 310-1270 - Cam Chest Kit without Cams - Chain Drive - Black Pushrods - Twin Cam
S&S Cycle
$1,522.95S&S Cycle - 310-1270 - Cam Chest Kit without Cams - Chain Drive - Black Pushrods - Twin CamFeaturesOil Pump/Cam Plate:Precision machined from billet aluminumPassage plugs are removable for...$1,522.95 -
Out of stock
S&S Cycle - 106-5929 - Cam Install Kit - Chain Drive
S&S Cycle
$54.95S&S Cycle - 106-5929 - Cam Install Kit - Chain DriveFeaturesKits include all required parts needed when servicing or changing gear- or chain-drive cams in a Twin Cam motorMade in the U.S.A.Specs$54.95 -
Out of stock
S&S Cycle - 330-0715 - Camshaft Kit - 540G Gear Drive - M8
S&S Cycle
$465.95S&S Cycle - 330-0715 - Camshaft Kit - 540G Gear Drive - M8 Features Designed to add even more torque to your big bore M8, for those that keep the revs below 6000 rpm when combined with 124" and...$465.95 -
Out of stock
S&S Cycle - 31-4004 - Ride Side Crankcase Bearing Race - Standard - Big Twin
S&S Cycle
$91.95S&S Cycle - 31-4004 - Ride Side Crankcase Bearing Race - Standard - Big TwinFeaturesMade in the U.S.A.SpecsProduc$91.95 -
Out of stock
S&S Cycle - 320-0359 - Flywheel Assembly - Twin Cam
S&S Cycle
$1,795.95S&S Cycle - 320-0359 - Flywheel Assembly - Twin CamFeaturesS&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpinFlywheel...$1,795.95 -
Out of stock
S&S Cycle - 920-0115 - High Compression Piston Kit - +0.010" - 110" Twin Cam CVO Motor
S&S Cycle
MSRP: $587.95$521.95S&S Cycle - 920-0115 - High Compression Piston Kit - +0.010" - 110" Twin Cam CVO MotorFeaturesDeck height is 1.0985"Wristpin diameter is .927"Piston features a 12.5cc raised dome to achieve a...MSRP: $587.95$521.95 -
Out of stock
S&S Cycle - 31-6510 - Oil Filter Mounting Bracket Kit - Polished
S&S Cycle
MSRP: $239.95$195.95S&S Cycle - 31-6510 - Oil Filter Mounting Bracket Kit - PolishedFeaturesNo voids or other casting defects in the material to cause leaksPosition of the filter has been shifted slightly to give...MSRP: $239.95$195.95 -
Out of stock
Kb Performance - KB305.030 - Piston Kit - Evolution
KB Performance
$246.95Kb Performance - KB305.030 - Piston Kit - EvolutionFeaturesManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring...$246.95 -
Out of stock
Kb Performance - KB305.005 - Piston Kit - Evolution
KB Performance
$246.95Kb Performance - KB305.005 - Piston Kit - EvolutionFeaturesManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring...$246.95 -
Out of stock
Kb Performance - KB266.030 - Piston Kit
KB Performance
$246.95Kb Performance - KB266.030 - Piston KitFeaturesManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring lifeDiamond-machined...$246.95 -
Out of stock
Kb Performance - KB266.040 - Piston Kit
KB Performance
$246.95Kb Performance - KB266.040 - Piston KitFeaturesManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring lifeDiamond-machined...$246.95 -
Out of stock
Kibblewhite - 20-23400 - Dual Shim Spring Kit - M8
Kibblewhite
$661.11Kibblewhite - 20-23400 - Dual Shim Spring Kit - M8FeaturesDesigned for maximum performanceFeatures interference-wound, double-chrome silicone springs; heat-treated steel base washersAll spring kits...$661.11 -
Out of stock
Kibblewhite - 10-HC447 - Valve Seat
Kibblewhite
$14.47Kibblewhite - 10-HC447 - Valve SeatFeaturesCopper-based material designed specifically for use with titanium valves in high performance applicationsGive the seat excellent thermal characteristics as...$14.47 -
Out of stock
Kb Performance - KB660C.005 - Piston Kit - 3.875" +0.005" - 10.0:1 CR - 103" Twin Cam | 96" Big Bore to 103" w/SE 95 cc Heads
KB Performance
$322.95Kb Performance - KB660C.005 - Piston Kit - 3.875" +0.005" - 10.0:1 CR - 103" Twin Cam | 96" Big Bore to 103" w/SE 95 cc HeadsFeaturesOffset pin design for quiet operationEach kit contains two...$322.95 -
Out of stock
Kb Performance - KB661C.005 - Piston Kit - 4.000" +0.005" - 10.0:1 CR - 96"/103" Twin Cam Bored to 110 CI w/SE 95 cc Heads
KB Performance
$322.95Kb Performance - KB661C.005 - Piston Kit - 4.000" +0.005" - 10.0:1 CR - 96"/103" Twin Cam Bored to 110 CI w/SE 95 cc HeadsFeaturesOffset pin design for quiet operationEach kit contains two pistons,...$322.95 -
Out of stock
Kb Performance - KB305.040 - Piston Kit
KB Performance
$246.95Kb Performance - KB305.040 - Piston KitFeaturesManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring lifeDiamond-machined...$246.95 -
Out of stock
Kb Performance - KB660C.STD - Piston Kit - 3.875" Standard - 10.0:1 CR - 103" Twin Cam | 96" Big Bore to 103" w/SE 95 cc Heads
KB Performance
$322.95Kb Performance - KB660C.STD - Piston Kit - 3.875" Standard - 10.0:1 CR - 103" Twin Cam | 96" Big Bore to 103" w/SE 95 cc HeadsFeaturesOffset pin design for quiet operationEach kit contains two...$322.95 -
Out of stock
Kb Performance - KB409C.010 - Piston Kit - 3.875" +0.010" - 10.0:1 CR - 103" Twin Cam | 96" Twin Cam Big Bore
KB Performance
$236.95Kb Performance - KB409C.010 - Piston Kit - 3.875" +0.010" - 10.0:1 CR - 103" Twin Cam | 96" Twin Cam Big BoreFeaturesManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum...$236.95 -
Out of stock
Kibblewhite - 20-2132M - Valve Guide - 0.5640" OD - Exhaust - Twin Cam | XL
Kibblewhite
$15.10Kibblewhite - 20-2132M - Valve Guide - 0.5640" OD - Exhaust - Twin Cam | XLFeaturesPrecision-machinedGuides can be easily reamed with a battery-operated or electric drill and finished with a...$15.10 -
Out of stock
Kb Performance - PRJ100-4PK - Lock Ring - Twin Cam
KB Performance
$10.95Kb Performance - PRJ100-4PK - Lock Ring - Twin CamFeaturesReplacement piston lock rings for KB Performance Piston KitSpecs$10.95 -
Out of stock
Kibblewhite - 20-20709 - Valve Guide - Exhaust - 0.5720" OD - 88"/96"/103" Twin Cam '05-'17 | XL '04-'22
Kibblewhite
$29.60Kibblewhite - 20-20709 - Valve Guide - Exhaust - 0.5720" OD - 88"/96"/103" Twin Cam '05-'17 | XL '04-'22FeaturesPrecision-machined from copper based C63000 nickel-aluminum bronzeCompatible with...$29.60 -
Out of stock
Fram - PH6022 - Oil Filter - Black - Twin Cam/M8
Fram
$19.09Fram - PH6022 - Oil Filter - Black - Twin Cam/M8FeaturesHigh-quality filters are made to strict specifications to provide superior performanceInclude all necessary o-rings or gasketsMicron rating of...$19.09 -
Out of stock
Joker Machine - 921016FC - Inspection Cover - Flame
Joker Machine
$109.95Joker Machine - 921016FC - Inspection Cover - FlameFeaturesChrome-plated with machined silver accentsCNC machined from 6061-T6 billet aluminumIncludes mounting hardwareMade in the USASpecs$109.95 -
Out of stock
Jims - 1754 - Flow Pro 1 Billet Oil Pump Top Line - Polished
Jims
$808.65Jims - 1754 - Flow Pro 1 Billet Oil Pump Top Line - PolishedFeaturesCNC-machined feed and return gears increase pump flow and return volumePumps include cover, gears, drive shaft, seals, gaskets,...$808.65 -
Out of stock
Jims - 24599-58B - Crankcase Bushing - Big Twin
Jims
$135.30Jims - 24599-58B - Crankcase Bushing - Big Twin Features 360 oiling Made in the U.S.A. Specs$135.30 -
Out of stock
Jims - 1046-36A - Rod Race Set - Big Twin
Jims
$136.83Jims - 1046-36A - Rod Race Set - Big TwinFeaturesMade from 52100 aerospace-quality Timken® bearing stockMade in the U.S.A.Replacement Part for OEM Number(s): 2434536A,2435636ASpecs$136.83 -
Out of stock
Jims - 24006-80/83 - Pinion Gear Shaft - Big Twin
Jims
$160.50Jims - 24006-80/83 - Pinion Gear Shaft - Big TwinFeaturesMade in the U.S.A.SpecsProduct NameGear$160.50 -
Out of stock
Gardner-Westcott - A-61-100 - Head Bolts - Chrome - Fits 1986-1991 XL; 1986-1991 Big Twin
Gardner-Westcott
$128.95Gardner-Westcott - A-61-100 - Head Bolts - ChromeFeaturesInclude four long and four short headboltsMade in the U.S.A.Specs$128.95 -
Out of stock
Gardner-Westcott - A-61-110 - Head Bolt Kit - Chrome - Fits 1999-2017 Twin Cam and 1992-2022 XL (except RH Sportster); 1993-1999 Evolution Big Twin (repl. OEM #s 16480-92 and 16478-85A)
Gardner-Westcott
$128.95Gardner-Westcott - A-61-110 - Head Bolt Kit - ChromeFeaturesInclude four long and four short headboltsMade in the U.S.A.Specs$128.95 -
Out of stock
Gardner-Westcott - SP-10-18-08 - Bolt Kit - Primary Cover Only - Socket-Head
Gardner-Westcott
$65.95Gardner-Westcott - SP-10-18-08 - Bolt Kit - Primary Cover Only - Socket-Head Features Primary cover only Made in the U.S.A. Specs$65.95 -
Out of stock
Gardner-Westcott - P-80-87 - Bolt Kit - Motor Set - Socket-Head
Gardner-Westcott
$309.95Gardner-Westcott - P-80-87 - Bolt Kit - Motor Set - Socket-HeadFeaturesIncludes all side covers, lifter base timing plug, inner primary mount, tip, front and rear motor mountsMade in the U.S.A.Specs$309.95 -
Out of stock
Gardner-Westcott - SP-80-87 - Bolt Kit - Motor Set - Socket-Head
Gardner-Westcott
$271.95Gardner-Westcott - SP-80-87 - Bolt Kit - Motor Set - Socket-HeadFeaturesIncludes all side covers, lifter base timing plug, inner primary mount, tip, front and rear motor mountsMade in the U.S.A.Specs$271.95 -
Out of stock
Gardner-Westcott - P-88-15 - Bolt Kit - Rocker Box - Socket-Head - Chrome - Twin Cam
Gardner-Westcott
$50.95Gardner-Westcott - P-88-15 - Bolt Kit - Rocker Box - Socket-Head - Chrome - Twin Cam Features Made in the U.S.A. Specs$50.95 -
Out of stock
Gardner-Westcott - P-10-18-06 - Bolt Kit - Cam Cover - Socket-Head - Chrome - Twin Cam
Gardner-Westcott
$35.95Gardner-Westcott - P-10-18-06 - Bolt Kit - Cam Cover - Socket-Head - Chrome - Twin CamFeaturesMade in the U.S.A.Specs$35.95
About Engine
Harley Engine Parts for Rebuilds and Performance
From a fresh gasket set to a full big bore build, we stock the Harley engine parts you need to rebuild, maintain or wake up your motor. Match parts to your engine: Evo, Twin Cam, Milwaukee-Eight and Sportster parts don't swap across.
Shop Engine Parts
- Camshafts
- Big bore kits
- Cylinders
- Heads
- Pushrods
- Lifters
- Rockers
- Gaskets & seals
- Oil pumps
- Oil filters
- Motor mounts
- Engine covers
We carry engine parts from S&S Cycle, Drag Specialties, V-Twin Mfg, Alloy Art, HardDrive and Rocker Lockers. Pair your build with an air cleaner and exhaust that let it breathe.
Not Sure It Fits?
Year, model and engine all matter, and plenty of parts look the same but aren't. If you can't tell whether something fits your bike, hit us up with your year and model and we'll check it before you order.