Engine
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Out of stock
Tp Engineering - 45-7101-23 - Rocker Box Gasket Kit - Twin Cam
Tp Engineering
$55.95Tp Engineering - 45-7101-23 - Rocker Box Gasket Kit - Twin CamFeaturesDesigned only for TP Rocker boxes.Made in the U.S.A.SpecsProduct NameGasket KitUnitsKitRiding StyleStreetTypeRocker BoxModelPro Series$55.95 -
Out of stock
S&S Cycle - 94-1291X - Replacement Piston Rings - 3.875" - +0.010"
S&S Cycle
$61.95S&S Cycle - 94-1291X - Replacement Piston Rings - 3.875" - +0.010"FeaturesReplacement ring sets for S&S pistons onlyRings come as sets for two pistonsMade in the USASpecsBore Size Imperial3.875''Product NamePiston RingUnitsSetRiding...$61.95 -
Out of stock
Revolution Performance, Llc - RP9791-040-020 - Head and Base Gasket Kit
Revolution Performance
$89.95Revolution Performance, Llc - RP9791-040-020 - Head and Base Gasket KitFeaturesrevolution performance logoMade in the U.S.A.revolution performance logoSpecsUnitsKitProduct NameGasket KitRiding StyleStreetBore Size Imperial3-9/16''$89.95 -
Out of stock
S&S Cycle - 50-8334 - Magnetic Plug - 1/8" NPT
S&S Cycle
$15.95S&S Cycle - 50-8334 - Magnetic Plug - 1/8" NPTFeaturesOEM replacement NPT Plug for Big Twin/XL oil pumpsSpecsTypeOil PumpProduct NamePlugFeaturesMagneticRiding StyleStreetUnitsEach$15.95 -
Out of stock
S&S Cycle - 50-0333 - Head Bolt Cover - Magnetic
S&S Cycle
$91.95S&S Cycle - 50-0333 - Head Bolt Cover - MagneticFeaturesMagnets hold covers in place; no screw neededSpecially designed for S&S head boltsNot for stock headboltsMade in the U.S.A.SpecsBase FinishChromeProduct NameCoverApplicationHead BoltRiding...$91.95 -
Out of stock
S&S Cycle - 90-4014 - Rocker Arm Bushing
S&S Cycle
$14.95S&S Cycle - 90-4014 - Rocker Arm BushingFeaturesReplacement bushing for S&S roller rocker armsMade in the U.S.A.SpecsRiding StyleStreetUnitsEachApplicationExhaustMounting PositionFrontApplicationIntakeTypeRocker ArmMounting PositionRearProduct NameBushing$14.95 -
Out of stock
S&S Cycle - 94-1214X - Replacement Piston Rings - 3.625" - +0.040"
S&S Cycle
$65.95S&S Cycle - 94-1214X - Replacement Piston Rings - 3.625" - +0.040"FeaturesReplacement ring sets for S&S pistons onlyRings come as sets for two pistonsMade in the USASpecsBore Size Imperial3.625''Product NamePiston RingPiston Size Imperial+0.040''Riding...$65.95 -
Out of stock
S&S Cycle - 31-0172A - Engine Case - 3.750" Bore w/Stock Stud Pattern - 88A Engine Type - Wrinkle Black -Twin Cam
S&S Cycle
MSRP: $2,427.95$2,195.95S&S Cycle - 31-0172A - Engine Case - 3.750" Bore w/Stock Stud Pattern - 88A Engine Type - Wrinkle Black -Twin CamFeaturesReplacement Twin Cam "A" engine cases for stock H-D chassis only (carb and EFI)Features greater overall strength than stock...MSRP: $2,427.95$2,195.95 -
Out of stock
S&S Cycle - 106-0434 - Piston Kit - For 103" Hot Set Up Kit® - 3.875" - +0.010"
S&S Cycle
$467.95S&S Cycle - 106-0434 - Piston Kit - For 103" Hot Set Up Kit® - 3.875" - +0.010"FeaturesPiston kit includes forged pistons (unless noted) rings, wrist pins and clips for a complete motor replacementMade in the U.S.ASpecsPiston...$467.95 -
Out of stock
S&S Cycle - 310-1052B - 124" Power Package - Chain Drive - Highlighted Fins - Chrome Pushrod Tubes - 107" M8
S&S Cycle
MSRP: $3,265.95$3,109.95S&S Cycle - 310-1052B - 124" Power Package - Chain Drive - Highlighted Fins - Chrome Pushrod Tubes - 107" M8FeaturesMade in the USABig Bore Kit107" to 124" Big bore kitBolt on kitNo case matching requiredForged pistons11:1 Compression ratioOil Pump/Cam...MSRP: $3,265.95$3,109.95 -
Out of stock
S&S Cycle - 310-1050B - 124" Power Package - Chain Drive - Highlighted Fins - Chrome Pushrod Tubes - 107" M8
S&S Cycle
MSRP: $3,265.95$3,109.95S&S Cycle - 310-1050B - 124" Power Package - Chain Drive - Highlighted Fins - Chrome Pushrod Tubes - 107" M8FeaturesMade in the U.S.A.Big Bore Kit107" to 124" Big bore kitBolt on kit.No case machining requiredForged pistons11.1 Compression ratioOil...MSRP: $3,265.95$3,109.95 -
Out of stock
S&S Cycle - 310-1109B - 128" Power Package - Chain Drive - Black Granite with Highlighted Fins - 114"/117" M8
S&S Cycle
MSRP: $3,265.95$3,169.95S&S Cycle - 310-1109B - 128" Power Package - Chain Drive - Black Granite with Highlighted Fins - 114"/117" M8FeaturesMade in the USABig Bore KitBig-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight to 128" with no case machining...MSRP: $3,265.95$3,169.95 -
Out of stock
S&S Cycle - 310-1110A - 128" Power Package - Gear Drive - Black Granite with Highlighted Fins - 114"/117" M8
S&S Cycle
$3,460.95S&S Cycle - 310-1110A - 128" Power Package - Gear Drive - Black Granite with Highlighted Fins - 114"/117" M8FeaturesMade in the USABig Bore KitBig-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight to 128" with no case machining...$3,460.95 -
Out of stock
S&S Cycle - 310-1103B - 128" Power Package - Chain Drive - Wrinkle Black with Highlighted Fins - 114"/117" M8
S&S Cycle
MSRP: $3,265.95$3,169.95S&S Cycle - 310-1103B - 128" Power Package - Chain Drive - Wrinkle Black with Highlighted Fins - 114"/117" M8FeaturesMade in the USABig Bore KitBig-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight to 128" with no case machining...MSRP: $3,265.95$3,169.95 -
Out of stock
S&S Cycle - 310-1056B - 124" Power Package - Chain Drive - Highlighted Fins - Black Pushrod Tubes - 107" M8
S&S Cycle
MSRP: $3,265.95$3,109.95S&S Cycle - 310-1056B - 124" Power Package - Chain Drive - Highlighted Fins - Black Pushrod Tubes - 107" M8FeaturesMade in the USABig Bore Kit107" to 124" Big bore kitBolt on kitNo case matching requiredForged pistons11:1 Compression ratioOil Pump/Cam...MSRP: $3,265.95$3,109.95 -
Out of stock
S&S Cycle - 310-1105B - 128" Power Package - Chain Drive - Wrinkle Black with Non-Highlighted Fins - 114"/117" M8
S&S Cycle
MSRP: $3,265.95$3,109.95S&S Cycle - 310-1105B - 128" Power Package - Chain Drive - Wrinkle Black with Non-Highlighted Fins - 114"/117" M8FeaturesMade in the USABig Bore KitBig-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight to 128" with no case machining...MSRP: $3,265.95$3,109.95 -
Out of stock
S&S Cycle - 310-1059A - 124" Power Package - Gear Drive - Non-Highlighted Fins - Black Pushrod Tubes - 107" M8
S&S Cycle
MSRP: $3,695.95$3,289.95S&S Cycle - 310-1059A - 124" Power Package - Gear Drive - Non-Highlighted Fins - Black Pushrod Tubes - 107" M8FeaturesMade in the USABig Bore Kit107" to 124" Big bore kitBolt on kitNo case matching requiredForged pistons11:1 Compression ratioOil Pump/Cam...MSRP: $3,695.95$3,289.95 -
Out of stock
S&S Cycle - 310-1104A - 128" Power Package - Gear Drive - Wrinkle Black with Highlighted Fins - 114"/117" M8
S&S Cycle
MSRP: $3,460.95$3,359.95S&S Cycle - 310-1104A - 128" Power Package - Gear Drive - Wrinkle Black with Highlighted Fins - 114"/117" M8FeaturesMade in the USABig Bore KitBig-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight to 128" with no case machining...MSRP: $3,460.95$3,359.95 -
Out of stock
S&S Cycle - 310-1058A - 124" Power Package - Gear Drive - Highlighted Fins - Black Pushrod Tubes - 107" M8
S&S Cycle
MSRP: $3,460.95$3,359.95S&S Cycle - 310-1058A - 124" Power Package - Gear Drive - Highlighted Fins - Black Pushrod Tubes - 107" M8 Features Made in the USA Big Bore Kit 107" to 124" Big bore kit Bolt on kit No case matching required Forged pistons 11:1 Compression...MSRP: $3,460.95$3,359.95 -
Out of stock
S&S Cycle - 310-1055A - 124" Power Package - Gear Drive - Highlighted Fins - Black Pushrod Tubes - 107" M8
S&S Cycle
$3,427.95S&S Cycle - 310-1055A - 124" Power Package - Gear Drive - Highlighted Fins - Black Pushrod Tubes - 107" M8FeaturesMade in the U.S.A.Big Bore Kit107" to 124" Big bore kitBolt on kit.No case machining requiredForged pistons11.1 Compression ratioOil...$3,427.95 -
Out of stock
S&S Cycle - 310-1053A - 124" Power Package - Gear Drive - Highlighted Fins - Chrome Pushrod Tubes - 107" M8
S&S Cycle
MSRP: $3,460.95$3,359.95S&S Cycle - 310-1053A - 124" Power Package - Gear Drive - Highlighted Fins - Chrome Pushrod Tubes - 107" M8FeaturesMade in the USABig Bore Kit107" to 124" Big bore kitBolt on kitNo case matching requiredForged pistons11:1 Compression ratioOil Pump/Cam...MSRP: $3,460.95$3,359.95 -
Out of stock
Kb Performance - KB426C.010 - Piston Kit - 3.750" +0.010" - 10.5:1 CR - 88" Twin Cam
Kb Performance
$295.95Kb Performance - KB426C.010 - Piston Kit - 3.750" +0.010" - 10.5:1 CR - 88" Twin CamFeaturesManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloyAllows a tighter fit and longer piston and ring lifeDiamond-machined pistons...$295.95 -
Out of stock
Kb Performance - KB426C.005 - Piston Kit - 3.750" +0.005" - 10.5:1 CR - 88" Twin Cam
Kb Performance
$281.29Kb Performance - KB426C.005 - Piston Kit - 3.750" +0.005" - 10.5:1 CR - 88" Twin CamFeaturesManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloyAllows a tighter fit and longer piston and ring lifeDiamond-machined pistons...$281.29 -
Out of stock
Kb Performance - KB425C.STD - Piston Kit - 3.750" Standard - 8.8:1 CR - 88" Twin Cam
Kb Performance
$287.95Kb Performance - KB425C.STD - Piston Kit - 3.750" Standard - 8.8:1 CR - 88" Twin CamFeaturesManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloyAllows a tighter fit and longer piston and ring lifeDiamond-machined pistons...$287.95 -
Out of stock
Hastings - 2M6164 - Piston Rings - 3.498" Standard - Evolution Big Twin
Hastings
$49.95Hastings - 2M6164 - Piston Rings - 3.498" Standard - Evolution Big TwinFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel FaceHelps in the the heat transfer process between the piston...$49.95 -
Out of stock
Gardner-Westcott - 7-113PLN-2X1.5 - Oil Gauge Fitting - 1-1/2" Nipple - 1/8" NPT
Gardner-Westcott
$7.95Gardner-Westcott - 7-113PLN-2X1.5 - Oil Gauge Fitting - 1-1/2" Nipple - 1/8" NPTFeaturesOil Gauge fittings for 1/8" NPTSpecsProduct NameFittingStyleNippleColor/FinishChromeTypeOil GaugeUnitsEachRiding StyleStreet$7.95 -
Out of stock
Jagg Oil Coolers - GK4600 - Replacement Gasket Service Kit
Jagg Oil Coolers
$10.95Jagg Oil Coolers - GK4600 - Replacement Gasket Service KitFeaturesService kit (repl. gasket) for oil filter adapterMade in the USASpecsTypeGasketMaterialRubberProduct NameService KitTypeReplacementRiding StyleStreetColor/FinishBlackUnitsKitBase ColorBlack$10.95 -
Out of stock
Figurati Designs - FD100-M8-TBOLT-BLK - Engine Bolt Kit - Titanium/Race Black - M8
Figurati Designs
MSRP: $799.95$239.95Figurati Designs - FD100-M8-TBOLT-BLK - Engine Bolt Kit - Titanium/Race Black - M8FeaturesBolt and washers included for: crank case, lifter blocks, transmission bearing cover, rocker cover, cam cover, transmission top cover, transmission side cover,...MSRP: $799.95$239.95 -
Out of stock
Feuling Parts - 3082 - Replacement Filter Element - Oil Tank
Feuling
$29.95Feuling Parts - 3082 - Replacement Filter Element - Oil Tank Features Replacement breather filter element Made in the USA Specs Units Each Base Color Silver Filter Media Material Cotton Gauze Filter...$29.95 -
Out of stock
Goodridge - P816-06SCH - Oil Line Fitting - Straight - 1/4" NPT
Goodridge
MSRP: $8.61$7.95Goodridge - P816-06SCH - Oil Line Fitting - Straight - 1/4" NPTFeaturesFemale fittings match stainless steel braided hoses to form complete oil line assembliesMade in the USASpecsMaterialStainless SteelUnitsEachColor/FinishChromeFeaturesStraight...MSRP: $8.61$7.95 -
Out of stock
Cometic - C10377-030 - Head Gasket - 4.250" - .030" - Center Cooled - MLS - M8
Cometic
$59.95Cometic - C10377-030 - Head Gasket - 4.250" - .030" - Center Cooled - MLS - M8FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMLX Gasket...$59.95 -
Out of stock
Cometic - C10377 - Head Gasket - 4.250" - .040" - Center Cooled - MLS - M8
Cometic
$59.95Cometic - C10377 - Head Gasket - 4.250" - .040" - Center Cooled - MLS - M8FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMLX Gasket...$59.95 -
Out of stock
Cometic - C9167 - Rocker Box Gasket Kit with seals 0.530" OD Value guides - Screamin' Eagle
Cometic
$56.65Cometic - C9167 - Rocker Box Gasket Kit with seals 0.530" OD Value guides - Screamin' EagleFeaturesPremium materials used for specific applications to provide a long, service free lifeInclude all gaskets, seals, O-rings and quality bolt seals needed when...$56.65 -
Out of stock
Cometic - C9917 - Top End Gasket - 4" - S&S
Cometic
$142.75Cometic - C9917 - Top End Gasket - 4" - S&SFeaturesEST gasket kit includes embossed stainless steel head, base and rocker gaskets covered with a proprietary rubber materialMaterial allows heat to be drawn away from the combustion ring and dissipated...$142.75 -
Out of stock
Bassani Xhaust - 1802P - O2 Sensor Port Plugs - 18 mm
Bassani Exhaust
$11.95Bassani Xhaust - 1802P - O2 Sensor Port Plugs - 18 mmFeaturesAllow non-sensor HD models to run newer-style exhaust systems equipped with O2 sensor portsSimply screw into non-essential sensor portsSold in pairsMade in the U.S.A.Bassani Xhaust...$11.95 -
Out of stock
Bassani Xhaust - 1202P - O2 Sensor Port Plugs - 12 mm
Bassani Exhaust
$11.95Bassani Xhaust - 1202P - O2 Sensor Port Plugs - 12 mmFeaturesAllow non-sensor HD models to run newer-style exhaust systems equipped with O2 sensor portsSimply screw into non-essential sensor portsSold in pairsMade in the U.S.A.Bassani Xhaust...$11.95 -
Out of stock
Bassani Xhaust - 102P2 - O2 Port Bung Adapter - 18 mm to 12 mm
Bassani Exhaust
$11.95Bassani Xhaust - 102P2 - O2 Port Bung Adapter - 18 mm to 12 mmFeaturesThreaded outer and inner adapters reduce O² sensor port from 18 mm to 12 mm allowing riders to use our exhaust pipes on select, newer-model motorcyclesSold in pairsMade in the U.S.A...$11.95 -
Out of stock
Alloy Art - CRA-3 - Compression Release Adapter - 12 mm x 3/4"
Alloy Art
$20.95Alloy Art - CRA-3 - Compression Release Adapter - 12 mm x 3/4"FeaturesDesigned to be used in twin plug headsAccept .650”/10mm x 1.0 compression release valvesSold eachMade in the U.S.A.SpecsUnitsEachProduct NameAdapterTypeCompression ReleaseConnector...$20.95 -
Out of stockOn Sale
Arlen Ness - 03-465 - Replacement Spring and Oil Ring Set
Arlen Ness
MSRP: $6.95Now: $6.26Was: $6.95Arlen Ness - 03-465 - Replacement Spring and Oil Ring SetFeaturesReplacement oil ring and spring for Arlen Ness re-usable oil filtersSpecsRiding StyleStreetProduct NameO-Ring SetTypeReplacementUnitsSetMaterialRubberBase...MSRP: $6.95Now: $6.26Was: $6.95 -
Out of stock
Wiseco - K1685 - Piston Kit - Standard - XL 1200
Wiseco
$447.95Wiseco - K1685 - Piston Kit - Standard - XL 1200FeaturesForged from high-silicon aluminum alloy for maximum strength and dependabilityKit Includes pistons, rings, retainer clips and chrome piston pinsIncludes X-Ring package (0.062" top ring, 0.062"...$447.95
Harley Engine
At Deadbeat Customs, we offer a wide selection of Harley engine parts built for performance, reliability, and long-lasting power. Whether you're rebuilding a vintage motor or upgrading a modern setup, we’ve got the top-end and bottom-end components you need to get the job done right.
We carry engine parts for a wide range of Harley Davidson models, including Dyna, Sportster, FXR, Touring, Softail, Shovelhead, and Panhead. From the classic Evo 1340 and Shovelhead to Twin Cam 88/96/103/110, and the modern Milwaukee-Eight 107/114/117, our catalog covers nearly every era of Harley engine design.
Choose from trusted brands like S&S Cycle, Fueling, Vance & Hines, and more—known for producing high-quality components that meet or exceed OEM standards.
Explore our full collection of Harley engine parts today and build your motor with confidence—because whether it’s vintage or modern, your Harley deserves the best from the inside out.