Engine
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V-Twin - 11-0647 - Lower Valve Collar Set
Eastern
$42.89V-Twin - 11-0647 - Lower Valve Collar SetDescriptionCollar set for lower valveSet of four. Fits:EL 1936-1940FL 1941-1947Additional Information OEM No.18222-36 UOM1 - SET ManufacturerEastern OriginUSA 2025 Catalog Pages513$42.89 -
V-Twin - 11-0644 - Upper Valve Collar Set
Motorshop
$44.84V-Twin - 11-0644 - Upper Valve Collar SetDescriptionUpper steel valve collar set for Big Twin models. Fits:FLT 1979-1983FX 1971-1984EL 1936-1940FL 1941-1984FXR 1982-1983Additional Information OEM No.18221-36 UOM4 - SET ManufacturerMotorshop ...$44.84 -
V-Twin - 11-0642 - Oversize Intake Valve Seat
Motorshop
$30.85V-Twin - 11-0642 - Oversize Intake Valve SeatDescriptionOversize intake valve seat is 2" x 1.687 x 9/32". Can be used with unleaded gas. Replacement size is actual size of seat, which is supplied. Fits:XL 1957-1969Additional Information UOM1 - EA ...$30.85 -
V-Twin - 11-0641 - Intake and Exhaust Valve Seat
Kibblewhite
$31.87V-Twin - 11-0641 - Intake and Exhaust Valve SeatDescriptionOversize intake and exhaust valve seat is 2.016" x 1.635" x .453". Can be used with unleaded gas. Fits:FL 1948-1965Additional Information UOM1 - EA ManufacturerKibblewhite OriginUSA 2025...$31.87 -
V-Twin - 11-0637 - 45 inch WL/G Piston Kit Standard
Motorshop
$185.36V-Twin - 11-0637 - 45 inch WL/G Piston Kit StandardDescriptionStandard piston kit with standard rings, 2 wrist pins and 4 circlips. For 45" models.Kit includes hasting rings. The piston measures 2.742" with a .002" clearance and can be bored out to a...$185.36 -
V-Twin - 11-0636 - Cylinder Stud Insert
Sifton
$34.31V-Twin - 11-0636 - Cylinder Stud InsertDescriptionCylinder stud insert only comes as 8 pieces. Fits:FXST 1986-1998FLT 1986-1998FXD 1991-1998FXR 1986-1994FLST 1986-1998Additional Information UOM8 - SET ManufacturerSifton OriginImported 2025 Catalog...$34.31 -
V-Twin - 11-0631 - 900/1000cc Chrome Exhaust Valve
V-Twin
$23.86V-Twin - 11-0631 - 900/1000cc Chrome Exhaust ValveDescriptionExhaust valve, chrome Fits:XL 1958-1985Additional Information OEM No.18080-58A UOM1 - EA ManufacturerV-Twin OriginImported 2025 Catalog Pages851$23.86 -
V-Twin - 11-0630 - Chrome Intake Valve
Motorshop
$15.86V-Twin - 11-0630 - Chrome Intake ValveDescriptionSifton chrome intake valve for Big Twin models Fits:FLT 1979-1983FX 1971-1984FXR 1982-1983FL 1966-1984Additional Information OEM No.18074-66 UOM1 - EA ManufacturerMotorshop OriginImported 2025 Catalog...$15.86 -
V-Twin - 11-0628 - 1000cc Chrome Intake Valve
Motorshop
$23.51V-Twin - 11-0628 - 1000cc Chrome Intake ValveDescriptionIntake valve is chrome and measures 3.63" long. Fits:XL 1970-1985Additional Information OEM No.18070-70 UOM1 - EA ManufacturerMotorshop OriginImported 2025 Catalog Pages851$23.51 -
V-Twin - 11-0625 - Stainless Steel Intake Valve
Motorshop
$19.86V-Twin - 11-0625 - Stainless Steel Intake ValveDescriptionSifton stainless steel intake valve for Shovelhead models. Fits:FLT 1979-1983FX 1971-1984FXR 1982-1983FL 1966-1984Additional Information OEM No.18074-66 UOM1 - EA ManufacturerMotorshop ...$19.86 -
V-Twin - 11-0618 - 900/1000cc Nitrate Steel Exhaust Valve
Motorshop
$15.86V-Twin - 11-0618 - 900/1000cc Nitrate Steel Exhaust ValveDescriptionNitrate steel exhaust valve has a racing stem 1-3/4" and has a tulip shape head for maximum flow. Fits:XL 1958-1985Additional Information OEM No.18070-70R UOM1 - EA ...$15.86 -
V-Twin - 11-0617 - 900/1000cc Nitrate Steel Exhaust Valve
Motorshop
$19.86V-Twin - 11-0617 - 900/1000cc Nitrate Steel Exhaust ValveDescriptionNitrate steel exhaust valve Fits:XL 1958-1985Additional Information OEM No.18080-58A UOM1 - EA ManufacturerMotorshop OriginImported 2025 Catalog Pages851$19.86 -
V-Twin - 11-0615 - Nitrate Steel Exhaust Valve
Eastern
$38.13V-Twin - 11-0615 - Nitrate Steel Exhaust ValveDescriptionNitrate steel exhaust valve is 1/8" oversize for 1948-1985 Big Twin models. Fits:FLT 1979-1983FX 1971-1984FXR 1982-1983FL 1948-1984FL 1979-1983Additional Information OEM No.18082-57 UOM1 - EA ...$38.13 -
V-Twin - 11-0614 - Nitrate Steel Exhaust Valve
Motorshop
$33.60V-Twin - 11-0614 - Nitrate Steel Exhaust ValveDescriptionNitrate steel exhaust valve is manufactured with a special nitrided process which helps improve wear properties and also reduces friction. Fits:FLT 1979-1983FX 1971-1984FXR 1982-1983FL 1948-1984FL...$33.60 -
V-Twin - 11-0611 - Steel Exhaust Valve
Sifton
$41.85V-Twin - 11-0611 - Steel Exhaust ValveDescriptionSifton steel exhaust valve Fits:UL 1937-1948 74" & 80"Additional Information OEM No.18082-37 UOM1 - EA ManufacturerSifton OriginUSA 2025 Catalog Pages802$41.85 -
V-Twin - 11-0609 - 1000cc Nitrate Steel Intake Valve
Motorshop
$15.86V-Twin - 11-0609 - 1000cc Nitrate Steel Intake ValveDescriptionNitrate steel intake valve measures 3.63" long. Fits:XL 1970-1985Additional Information OEM No.18070-70 UOM1 - EA ManufacturerMotorshop OriginImported 2025 Catalog Pages851$15.86 -
V-Twin - 11-0606 - Nitrate Steel Intake Valve
Motorshop
$15.86V-Twin - 11-0606 - Nitrate Steel Intake ValveDescription1/16" oversize intake valve is made of nitrate steel. Fits:FLT 1979-1983FX 1971-1984FXR 1982-1983FL 1966-1984Additional Information UOM1 - EA MeasurementsAdditional InformationOverall Length: 3...$15.86 -
V-Twin - 11-0605 - Nitrate Steel Intake Valve
Sifton
$27.15V-Twin - 11-0605 - Nitrate Steel Intake ValveDescriptionNitrate steel intake valve is manufactured with a special nitrided process which helps improve wear properties and also reduces friction. Fits:FLT 1979-1983FX 1971-1984FXR 1982-1983FL...$27.15 -
V-Twin - 11-0601 - Steel Intake Valve
Sifton
$39.69V-Twin - 11-0601 - Steel Intake ValveDescriptionSteel intake valve is for 45" Side Valve models.Intake valve measures 1-5/8". Fits:WL 1929-1952G 1929-1973Additional Information OEM No.18070-32 UOM1 - EA ManufacturerSifton OriginImported 2025 Catalog...$39.69 -
V-Twin - 11-0600 - Steel Intake Valve
Sifton
$44.07V-Twin - 11-0600 - Steel Intake ValveDescriptionSteel intake valve Fits:UL 1937-1948 74" & 80"Additional Information OEM No.18072-37 UOM1 - EA MeasurementsAdditional InformationHead Diameter: 1.942"Stem Length: 3.71" ...$44.07 -
V-Twin - 11-0589 - 1200cc Cylinder and Piston Conversion Kit Black
Motorshop
$622.01V-Twin - 11-0589 - 1200cc Cylinder and Piston Conversion Kit BlackDescription1200cc XL Conversion cylinder and piston set includes 2 black finished with milled edge fin cylinders with fitted Wiseco 10:1 piston and ring set.Order base and head base gasket...$622.01 -
V-Twin - 11-0585 - Rocker Box Chrome D-Ring Set
Motorshop
$63.22V-Twin - 11-0585 - Rocker Box Chrome D-Ring SetDescriptionChrome d-ring set for rocker boxes on XL models.Sold as a pair. Fits:XL 1991-2003Additional Information OEM No.17533-90 UOM1 - SET FinishChrome ManufacturerMotorshop OriginImported 2025...$63.22 -
V-Twin - 11-0584 - Rocker Box Breather Element
James
$33.64V-Twin - 11-0584 - Rocker Box Breather ElementDescriptionRocker box breather element. Fits:FLT 1999-2016FLST 1999-2017FXST 1999-2017FXD 1999-2017Additional Information OEM No.63815-99 UOM10 - PK ManufacturerJames OriginUSA 2025 Catalog Pages179$33.64 -
V-Twin - 11-0578 - Rocker Box Assembly Polished Finish
Motorshop
$565.75V-Twin - 11-0578 - Rocker Box Assembly Polished FinishDescriptionPolished rocker box assembly includes covers in polished finish, 4 arms, 4 shafts and chrome end shaft nuts for Shovelhead.*NOTE: May have pits, marks, or voids in casting. This does not...$565.75 -
V-Twin - 11-0577 - Rocker Box Assembly Chrome Finish
Motorshop
$689.96V-Twin - 11-0577 - Rocker Box Assembly Chrome FinishDescriptionChrome rocker box assembly includes covers in chrome finish, 4 arms, 4 shafts and chrome end shaft nuts for Shovelhead.May have pits, marks, or voids in casting. This does not affect fitment...$689.96 -
V-Twin - 11-0571 - Rocker Arm Shaft Set
V-Twin
$58.20V-Twin - 11-0571 - Rocker Arm Shaft SetDescriptionSifton rocker arm 4 piece shaft set for 1986-up. Fits:FLT 1984-2016FXD 1991-2017XL 1986-UPFLST 1986-2017FXST 1984-2017FXR 1984-1994Additional Information OEM No.17611-83 UOM1 - SET ManufacturerV-Twin ...$58.20 -
V-Twin - 11-0570 - Rocker Arm Shaft Set
V-Twin
$120.28V-Twin - 11-0570 - Rocker Arm Shaft SetDescriptionReplica rocker arm shaft for 1966-1984 Big Twins. Fits:FLT 1979-1983FX 1971-1984FXR 1982-1983FL 1966-1984Additional Information OEM No.17611-66A UOM4 - PK ManufacturerV-Twin OriginImported 2025...$120.28 -
V-Twin - 11-0565 - 1200cc Cylinder and Piston Conversion Kit Silver
Motorshop
$605.48V-Twin - 11-0565 - 1200cc Cylinder and Piston Conversion Kit SilverDescriptionBig bore cylinder kit for 883-1200 conversion on Sportster models.Increase your horsepower with our V-Twin 883cc to 1200cc big bore conversion kit. Our kit includes 2 silver...$605.48 -
V-Twin - 11-0558 - Rocker Arm Ball Stud
Motorshop
$45.33V-Twin - 11-0558 - Rocker Arm Ball StudDescriptionRocker arm ball stud comes as 4 pieces. Fits:FL 1941-1947EL 1937-1940Additional Information OEM No.17425-36 UOM4 - PK ManufacturerMotorshop OriginImported 2025 Catalog Pages513$45.33 -
V-Twin - 11-0540 - Standard Rocker Arm Shaft
Motorshop
$146.96V-Twin - 11-0540 - Standard Rocker Arm ShaftDescriptionSifton Knucklehead rocker arm shaft set.Front intake measures 4-1/8" and has an actual ground surface of 4.115. Rear intake measures 3-5/8" and has an actual ground surface of 3.6. Rear exhaust...$146.96 -
V-Twin - 11-0539 - Rocker Arm Shaft
Jims
$120.41V-Twin - 11-0539 - Rocker Arm ShaftDescriptionJims rocker arm shaft has an outer diameter at the big end of .937" and the small end of .434". Fits:FLT 1979-1983FX 1971-1984FXR 1982-1983FL 1966-1984Additional Information OEM No.17611-66B UOM1 - EA ...$120.41 -
V-Twin - 11-0534 - Shovelhead Rocker Box Cover Set Chrome
Motorshop
$635.78V-Twin - 11-0534 - Shovelhead Rocker Box Cover Set ChromeDescriptionFront and rear rocker box covers for Shovelheads are cast aluminum with a chrome finish.Sold as a pair. *NOTE: Must order studs separately. *NOTE: The top of the cover is made in Japan...$635.78 -
V-Twin - 11-0533 - 88 inch Evolution Big Bore Cylinder Black
Motorshop
$291.35V-Twin - 11-0533 - 88 inch Evolution Big Bore Cylinder BlackDescriptionIncrease your stock 80" Evolution engine with our big bore cylinder to 88" cubic inches.This is 3-5/8" black cylinder will have to be honed for final fitment. Case boring will be...$291.35 -
V-Twin - 11-0532 - 88 inch Evolution Big Bore Cylinder Silver
Motorshop
$232.33V-Twin - 11-0532 - 88 inch Evolution Big Bore Cylinder SilverDescriptionIncrease your stock 80" Evolution engine with our big bore cylinder to 88" cubic inches.This 3-5/8" silver cylinder will have to be honed for final fitment. Case boring will be...$232.33 -
V-Twin - 11-0531 - Intake Valve Oiler
Motorshop
$21.76V-Twin - 11-0531 - Intake Valve OilerDescriptionPanhead rear intake valve oiler for Big Twin models. Fits:FL 1948-1965Additional Information OEM No.18102-49 UOM1 - EA ManufacturerMotorshop OriginImported 2025 Catalog Pages508$21.76 -
V-Twin - 11-0530 - Intake Valve Oiler
Motorshop
$19.78V-Twin - 11-0530 - Intake Valve OilerDescriptionPanhead front intake valve oiler for Big Twin models. Fits:FL 1948-1965Additional Information OEM No.18100-49 UOM1 - EA ManufacturerMotorshop OriginImported 2025 Catalog Pages508$19.78 -
V-Twin - 11-0528 - Rocker Arm Rear Exhaust Front Intake
Motorshop
$50.78V-Twin - 11-0528 - Rocker Arm Rear Exhaust Front IntakeDescriptionReplica rocker arm only includes one front intake and one rear exhaust and is complete with shafts. Fits:FL 1948-1965Additional Information OEM No.17360-48 UOM1 - EA ...$50.78 -
V-Twin - 11-0527 - Rocker Arm Assembly Rear Intake Front Exhaust
Motorshop
$124.91V-Twin - 11-0527 - Rocker Arm Assembly Rear Intake Front ExhaustDescriptionReplica rocker arm assembly includes one front exhaust and one rear intake and are complete with shafts and blocks. Fits:FL 1948-1965Additional Information OEM No.17635-48 UOM1...$124.91 -
V-Twin - 11-0526 - Rocker Arm Assembly Rear Exhaust Front Intake
Motorshop
$124.91V-Twin - 11-0526 - Rocker Arm Assembly Rear Exhaust Front IntakeDescriptionReplica Rocker Arm Assembly are complete with shafts and blocks. Upper and lower block sets may have to be honed prior to final assembly. Fits:FL 1948-1965Additional Information ...$124.91 -
V-Twin - 11-0525 - Rocker Arm Rear Intake
Motorshop
$82.38V-Twin - 11-0525 - Rocker Arm Rear IntakeDescriptionRear intake rocker arm includes bushings installed Fits:XL 1957-1985Additional Information OEM No.17397-57A UOM1 - EA ManufacturerMotorshop OriginImported 2025 Catalog Pages848$82.38
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.