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Engine

Engine

 

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    V-Twin - 11-0855 - Polished Rocker Box Assembly Set V-Twin - 11-0855 - Polished Rocker Box Assembly Set
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    V-Twin - 11-0855 - Polished Rocker Box Assembly Set

    Motorshop

    $283.70
    V-Twin - 11-0855 - Polished Rocker Box Assembly SetDescriptionFront and rear rocker box assembly set with polished aluminum highlights, as OEM, for XL models.Includes shafts, rocker arms, nuts and end case. Fits:XL 1957-1985Additional Information OEM No...
    $283.70
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    $283.70
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    V-Twin - 11-0853 - Cast Iron .010 Oversize Valve Guide V-Twin - 11-0853 - Cast Iron .010 Oversize Valve Guide
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    V-Twin - 11-0853 - Cast Iron .010 Oversize Valve Guide

    Motorshop

    $27.71
    V-Twin - 11-0853 - Cast Iron .010 Oversize Valve GuideDescriptionCast iron .005 oversize valve guide is used for intake or exhaust. Fits:K 1952-1956WL 1929-1952G 1929-1973Additional Information UOM1 - EA ManufacturerMotorshop OriginImported 2025...
    $27.71
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    $27.71
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    V-Twin - 11-0796 - Nitrate Valve and Spring Kit V-Twin - 11-0796 - Nitrate Valve and Spring Kit
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    V-Twin - 11-0796 - Nitrate Valve and Spring Kit

    Sifton

    $121.03
    V-Twin - 11-0796 - Nitrate Valve and Spring KitDescriptionSifton valve and spring kit for Shovelhead models includes 2 intake and 2 exhaust valve with nitrate finish, complete spring set, keepers with upper and lower collars. Fits:FLT 1979-1983FX...
    $121.03
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    $121.03
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    V-Twin - 11-0794 - Nitrate Valve and Spring Kit V-Twin - 11-0794 - Nitrate Valve and Spring Kit
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    V-Twin - 11-0794 - Nitrate Valve and Spring Kit

    Sifton

    $194.53
    V-Twin - 11-0794 - Nitrate Valve and Spring KitDescriptionSifton valve and spring kit for Shovelhead models includes 2 intake and 2 exhaust valve with nitrate finish, complete spring set, keepers with upper and lower collars. Fits:FX 1971-1979FL...
    $194.53
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    $194.53
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    V-Twin - 11-0788 - Oversize Exhaust Valve Seat V-Twin - 11-0788 - Oversize Exhaust Valve Seat
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    V-Twin - 11-0788 - Oversize Exhaust Valve Seat

    Motorshop

    $29.04
    V-Twin - 11-0788 - Oversize Exhaust Valve SeatDescriptionOversize exhaust valve seat is 1.713" X 1.379" X .400. Can be used with unleaded gas. Replacement size is actual size of seat. Fits:FXST 1984-1998FLT 1984-1998FXD 1991-1998FXR 1984-1994FLST...
    $29.04
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    $29.04
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    V-Twin - 11-0724 - Cast Iron .002 Exhaust Valve Guide V-Twin - 11-0724 - Cast Iron .002 Exhaust Valve Guide
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    V-Twin - 11-0724 - Cast Iron .002 Exhaust Valve Guide

    Motorshop

    $17.86
    V-Twin - 11-0724 - Cast Iron .002 Exhaust Valve GuideDescription.002 cast iron exhaust valve guideInner diameter is .3395-.3400. May have to be honed for final fit. Fits:XL 1957-1982Additional Information OEM No.18172-57B UOM1 - EA ...
    $17.86
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    $17.86
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    V-Twin - 11-0659 - Oversize Exhaust Valve Seat V-Twin - 11-0659 - Oversize Exhaust Valve Seat
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    V-Twin - 11-0659 - Oversize Exhaust Valve Seat

    Motorshop

    $30.85
    V-Twin - 11-0659 - Oversize Exhaust Valve SeatDescriptionOversize exhaust valve seat has a 1.405 port size. Can be used with unleaded gas. Replacement size is actual size of seat, which is supplied. Fits:XL 1957-1985Additional Information UOM1 - EA ...
    $30.85
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    $30.85
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    V-Twin - 11-0643 - Oversize Intake Valve Seat V-Twin - 11-0643 - Oversize Intake Valve Seat
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    V-Twin - 11-0643 - Oversize Intake Valve Seat

    Motorshop

    $30.85
    V-Twin - 11-0643 - Oversize Intake Valve SeatDescriptionOversize intake valve seat is 2-1/16" x 1.687 x 9/32". Can be used with unleaded gas. Replacement size is actual size of seat, which is supplied. Fits:XL 1970-1985Additional Information UOM1 - EA ...
    $30.85
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    $30.85
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    V-Twin - 11-0621 - Lower Rocker Box Cover Hardware V-Twin - 11-0621 - Lower Rocker Box Cover Hardware
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    V-Twin - 11-0621 - Lower Rocker Box Cover Hardware

    Motorshop

    $24.29
    V-Twin - 11-0621 - Lower Rocker Box Cover HardwareDescriptionEvolution lower rocker cover mounting hardware set includes all correct bolts, allen screws and washers necessary for bolting lower rock cover to cylinder head. Complete set for 2 heads for...
    $24.29
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    $24.29
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    V-Twin - 11-0595 - 883cc to 1200cc Cylinder and Piston Conversion Kit Black V-Twin - 11-0595 - 883cc to 1200cc Cylinder and Piston Conversion Kit Black
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    V-Twin - 11-0595 - 883cc to 1200cc Cylinder and Piston Conversion Kit Black

    Motorshop

    $532.73
    V-Twin - 11-0595 - 883cc to 1200cc Cylinder and Piston Conversion Kit BlackDescription883cc to 1200cc XL Conversion cylinder and piston set includes 2 black finished with milled edge fin cylinders.Cylinders have fitted Sifton moly 9.5:1 reverse dome...
    $532.73
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    $532.73
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    V-Twin - 11-0572 - Rocker Arm and Shaft Kit V-Twin - 11-0572 - Rocker Arm and Shaft Kit
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    V-Twin - 11-0572 - Rocker Arm and Shaft Kit

    Motorshop

    $211.74
    V-Twin - 11-0572 - Rocker Arm and Shaft KitDescriptionSifton rocker arm and shaft kit includes 4 rocker arms and 4 shafts.Kit includes bushings which are already sized to fit the shafts. Fits:FLT 1984-2016FXD 1984-2017XL 1986-UPFLST 1986-2017FXST...
    $211.74
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    $211.74
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    V-Twin - 11-0529 - Rocker Arm Front Exhaust Rear Intake V-Twin - 11-0529 - Rocker Arm Front Exhaust Rear Intake
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    V-Twin - 11-0529 - Rocker Arm Front Exhaust Rear Intake

    Motorshop

    $45.67
    V-Twin - 11-0529 - Rocker Arm Front Exhaust Rear IntakeDescriptionReplica rocker arm only for front exhaust and rear intake. Fits:FL 1948-1965Additional Information OEM No.17375-48 UOM1 - EA ManufacturerMotorshop OriginImported 2025 Catalog Pages508
    $45.67
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    $45.67
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    V-Twin - 11-0510 - Big Bore Gasket and Parts Kit V-Twin - 11-0510 - Big Bore Gasket and Parts Kit
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    V-Twin - 11-0510 - Big Bore Gasket and Parts Kit

    Motorshop

    $87.00
    V-Twin - 11-0510 - Big Bore Gasket and Parts KitDescriptionMagnum cylinder small parts kit is for installing 3-5/8" barrels on Shovelhead cases. Kit includes 2 head gaskets, base gaskets, 8 cylinder base nuts and 10 head bolts with washers.*NOTE: The...
    $87.00
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    $87.00
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    V-Twin - 11-0434 - K-Model Piston Kit .040 Oversize V-Twin - 11-0434 - K-Model Piston Kit .040 Oversize
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    V-Twin - 11-0434 - K-Model Piston Kit .040 Oversize

    Eastern

    $239.97
    V-Twin - 11-0434 - K-Model Piston Kit .040 OversizeDescriptionPiston kit .040, Bore 2.745", includes rings. Fits:K 1952-1956Additional Information UOM1 - KIT ManufacturerEastern OriginImported 2025 Catalog Pages820 Replacement Items11-2533 - 45"...
    $239.97
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    $239.97
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    V-Twin - 11-0423 - 3-5/16 inch Piston Set .080 Oversize V-Twin - 11-0423 - 3-5/16 inch Piston Set .080 Oversize
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    V-Twin - 11-0423 - 3-5/16 inch Piston Set .080 Oversize

    Eastern

    $237.41
    V-Twin - 11-0423 - 3-5/16 inch Piston Set .080 OversizeDescriptionPiston set 3-5/16" bore is .080 oversize. Set includes ring set, 2 wrist pins and 4 circlips. Pistons have a steel expansion control strut cast. For 74" engineMeasures 1-1/8" from the top...
    $237.41
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    $237.41
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    V-Twin - 11-0422 - 3-5/16 inch Piston Set .070 Oversize V-Twin - 11-0422 - 3-5/16 inch Piston Set .070 Oversize
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    V-Twin - 11-0422 - 3-5/16 inch Piston Set .070 Oversize

    Eastern

    $237.41
    V-Twin - 11-0422 - 3-5/16 inch Piston Set .070 OversizeDescriptionPiston set 3-5/16" bore is .070 oversize. Set includes ring set, 2 wrist pins and 4 circlips. Pistons have a steel expansion control strut cast. For 74" engine Fits:UL 1937-1948Additional...
    $237.41
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    $237.41
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    V-Twin - 11-0421 - 3-5/16 inch Piston Set .060 Oversize V-Twin - 11-0421 - 3-5/16 inch Piston Set .060 Oversize
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    V-Twin - 11-0421 - 3-5/16 inch Piston Set .060 Oversize

    Eastern

    $237.41
    V-Twin - 11-0421 - 3-5/16 inch Piston Set .060 OversizeDescriptionPiston set 3-5/16" bore is .060 oversize. Set includes ring set, 2 wrist pins and 4 circlips. Pistons have a steel expansion control strut cast. For 74" engine Fits:UL 1937-1948Additional...
    $237.41
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    $237.41
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    V-Twin - 11-0420 - 3-5/16 inch Piston Set .050 Oversize V-Twin - 11-0420 - 3-5/16 inch Piston Set .050 Oversize
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    V-Twin - 11-0420 - 3-5/16 inch Piston Set .050 Oversize

    Eastern

    $237.41
    V-Twin - 11-0420 - 3-5/16 inch Piston Set .050 OversizeDescriptionPiston set 3-5/16" bore is .050 oversize. Set includes ring set, 2 wrist pins and 4 circlips. Pistons have a steel expansion control strut cast. For 74" engine Fits:UL 1937-1948Additional...
    $237.41
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    $237.41
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    V-Twin - 11-0419 - 3-5/16 inch Piston Set .040 Oversize V-Twin - 11-0419 - 3-5/16 inch Piston Set .040 Oversize
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    V-Twin - 11-0419 - 3-5/16 inch Piston Set .040 Oversize

    Eastern

    $237.41
    V-Twin - 11-0419 - 3-5/16 inch Piston Set .040 OversizeDescriptionPiston set 3-5/16" bore is .040 oversize. Set includes ring set, 2 wrist pins and 4 circlips. Pistons have a steel expansion control strut cast. For 74" engine Fits:UL 1937-1948Additional...
    $237.41
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    $237.41
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    V-Twin - 11-0411 - 3-7/16 inch Piston Set .030 Oversize V-Twin - 11-0411 - 3-7/16 inch Piston Set .030 Oversize
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    V-Twin - 11-0411 - 3-7/16 inch Piston Set .030 Oversize

    Eastern

    $255.63
    V-Twin - 11-0411 - 3-7/16 inch Piston Set .030 OversizeDescriptionPiston set 3-7/16" bore is .030 oversize. Set includes ring set, 2 wrist pins and 4 circlips. Pistons have a steel expansion control strut cast. For 80" engine Fits:ULH 1937-1948Additional...
    $255.63
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    $255.63
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    V-Twin - 11-0406 - Piston Kit .060 Oversize V-Twin - 11-0406 - Piston Kit .060 Oversize
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    V-Twin - 11-0406 - Piston Kit .060 Oversize

    Eastern

    $197.09
    V-Twin - 11-0406 - Piston Kit .060 OversizeDescription.060 piston kit comes with .060 rings, 2 wrist pins and 4 circlips. For 45" models.Pistons have a steel expansion control strut cast as original. Top ring measures 3/32" thick and the oil ring...
    $197.09
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    $197.09
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    V-Twin - 11-0405 - Piston Kit .050 Oversize V-Twin - 11-0405 - Piston Kit .050 Oversize
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    V-Twin - 11-0405 - Piston Kit .050 Oversize

    Motorshop

    $138.15
    V-Twin - 11-0405 - Piston Kit .050 OversizeDescription.050 piston kit comes with .050 rings, 2 wrist pins and 4 circlips. For 45" models.Pistons have a steel expansion control strut cast as original. Top ring measures 3/32" thick and the oil ring...
    $138.15
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    $138.15
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    V-Twin - 11-0404 - Piston Kit .040 Oversize V-Twin - 11-0404 - Piston Kit .040 Oversize
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    V-Twin - 11-0404 - Piston Kit .040 Oversize

    Motorshop

    $137.53
    V-Twin - 11-0404 - Piston Kit .040 OversizeDescription.040 piston kit comes with .040 rings, 2 wrist pins and 4 circlips. For 45" models.Pistons have a steel expansion control strut cast as original. Top ring measures 3/32" thick and the oil ring...
    $137.53
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    $137.53
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    V-Twin - 11-0403 - Piston Kit .030 Oversize V-Twin - 11-0403 - Piston Kit .030 Oversize
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    V-Twin - 11-0403 - Piston Kit .030 Oversize

    Eastern

    $185.31
    V-Twin - 11-0403 - Piston Kit .030 OversizeDescription.030 piston kit comes with .030 thick piston rings, 2 wrist pins and 4 circlips. For 45" models.Pistons have a steel expansion control strut cast as original. Fits:G 1929-1949WL 1929-1952Additional...
    $185.31
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    $185.31
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    V-Twin - 11-0401 - 45 inch WL/G Piston Kit .010 inch Oversize V-Twin - 11-0401 - 45 inch WL/G Piston Kit .010 inch Oversize
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    V-Twin - 11-0401 - 45 inch WL/G Piston Kit .010 inch Oversize

    Motorshop

    $173.73
    V-Twin - 11-0401 - 45 inch WL/G Piston Kit .010 inch OversizeDescription.010 piston kit comes with .010 rings, 2 wrist pins and 4 circlips. For 45" models.Pistons have a steel expansion control strut cast as original. Top ring measures 3/32" thick and...
    $173.73
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    $173.73
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    V-Twin - 11-0400 - 45 inch WL/G Piston Kit Standard V-Twin - 11-0400 - 45 inch WL/G Piston Kit Standard
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    V-Twin - 11-0400 - 45 inch WL/G Piston Kit Standard

    Motorshop

    $123.35
    V-Twin - 11-0400 - 45 inch WL/G Piston Kit StandardDescriptionStandard piston kit with standard rings, 2 wrist pins and 4 circlips. For 45" models.Pistons have a steel expansion control strut cast as original. The piston measures 2.7455" with a .002...
    $123.35
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    $123.35
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    V-Twin - 11-0386 - Replica 883cc Cylinder Black
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    V-Twin - 11-0386 - Replica 883cc Cylinder Black

    Motorshop

    $83.23
    V-Twin - 11-0386 - Replica 883cc Cylinder BlackDescriptionReplica Evolution 883cc black with silver finned cylinders are bored for standard pistons and require honing for final fitment. Fits:XL 1986-2003Additional Information UOM1 - EA ...
    $83.23
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    $83.23
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    V-Twin - 11-0385 - 3-5/8 inch Cylinder Set V-Twin - 11-0385 - 3-5/8 inch Cylinder Set
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    V-Twin - 11-0385 - 3-5/8 inch Cylinder Set

    Motorshop

    $305.31
    V-Twin - 11-0385 - 3-5/8 inch Cylinder SetDescriptionCylinders are .200 taller than stock height cylinders.For installation of 3-5/8" cylinders after spigot holes have been enlargedto 3.8750". (See diagram for photos.) Cylinders are honed to a finished...
    $305.31
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    $305.31
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    V-Twin - 11-0384 - 45 inch WL/G Piston Kit .005 inch Oversize V-Twin - 11-0384 - 45 inch WL/G Piston Kit .005 inch Oversize
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    V-Twin - 11-0384 - 45 inch WL/G Piston Kit .005 inch Oversize

    Motorshop

    $278.86
    V-Twin - 11-0384 - 45 inch WL/G Piston Kit .005 inch OversizeDescription.005 oversize piston kit with rings, 2 wrist pins and 4 circlips, for 45" models.Kit includes hasting ring set with 3/32" compression rings and 1/8" oil ring. *NOTE: Bore and hone to...
    $278.86
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    $278.86
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    V-Twin - 11-0379 - 45 inch Piston Kit Standard
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    V-Twin - 11-0379 - 45 inch Piston Kit Standard

    Motorshop

    $119.03
    V-Twin - 11-0379 - 45 inch Piston Kit StandardDescription45" standard piston kit is the original Harley-Davidson army surplus and includes the ring set.Sold as a set of 2. Fits:G 1936-1973W 1936-1952Additional Information UOM1 - KIT ...
    $119.03
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    $119.03
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    V-Twin - 11-0378 - Cylinder and Piston Conversion Kit V-Twin - 11-0378 - Cylinder and Piston Conversion Kit
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    V-Twin - 11-0378 - Cylinder and Piston Conversion Kit

    Motorshop

    $552.04
    V-Twin - 11-0378 - Cylinder and Piston Conversion KitDescription883-1200cc conversion cylinder and piston kit features black cylinders with Sifton moly coated pistons.Kit is bolt on. Fits:XL 2004-UPAdditional Information UOM1 - KIT ...
    $552.04
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    $552.04
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    V-Twin - 11-0377 - Cylinder and Piston Conversion Kit V-Twin - 11-0377 - Cylinder and Piston Conversion Kit
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    V-Twin - 11-0377 - Cylinder and Piston Conversion Kit

    Motorshop

    $486.22
    V-Twin - 11-0377 - Cylinder and Piston Conversion KitDescriptionCylinder and piston conversion kit features silver finished cast cylinders with Sifton moly coated pistons. Fits:XL 2004-UPAdditional Information UOM1 - KIT ManufacturerMotorshop ...
    $486.22
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    $486.22
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    V-Twin - 11-0350 - Hydraulic Tappet and Pushrod Assembly V-Twin - 11-0350 - Hydraulic Tappet and Pushrod Assembly
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    V-Twin - 11-0350 - Hydraulic Tappet and Pushrod Assembly

    Motorshop

    $536.10
    V-Twin - 11-0350 - Hydraulic Tappet and Pushrod AssemblyDescriptionSifton tappet and pushrod assembly includes 4130 chromoly pushrods set with black oxide finish, 4 hydraulic tappets and chrome tappet blocks with chrome allen bolts.For Evolution engine...
    $536.10
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    $536.10
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    V-Twin - 11-0337 - 1200cc Cylinder and Piston Conversion Kit Black V-Twin - 11-0337 - 1200cc Cylinder and Piston Conversion Kit Black
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    V-Twin - 11-0337 - 1200cc Cylinder and Piston Conversion Kit Black

    Motorshop

    $633.26
    V-Twin - 11-0337 - 1200cc Cylinder and Piston Conversion Kit BlackDescription1200cc XL conversion cylinder and piston set includes 2 black finished with milled silver finish edged fin cylinders with fitted Wiseco 10:1 piston and ring set.No head work...
    $633.26
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    $633.26
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    V-Twin - 11-0336 - 1200cc Cylinder and Piston Conversion Kit Silver V-Twin - 11-0336 - 1200cc Cylinder and Piston Conversion Kit Silver
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    V-Twin - 11-0336 - 1200cc Cylinder and Piston Conversion Kit Silver

    Motorshop

    $563.53
    V-Twin - 11-0336 - 1200cc Cylinder and Piston Conversion Kit SilverDescription1200cc XL Conversion cylinder and piston set includes 2 silver finished with milled edge fin cylinders with fitted Wiseco 10:1 piston and ring set.No head work necessary. The...
    $563.53
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    $563.53
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    V-Twin - 11-0331 - 95 inch Big Bore Twin Cam Piston Kit Standard V-Twin - 11-0331 - 95 inch Big Bore Twin Cam Piston Kit Standard
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    V-Twin - 11-0331 - 95 inch Big Bore Twin Cam Piston Kit Standard

    Eastern

    $204.46
    V-Twin - 11-0331 - 95 inch Big Bore Twin Cam Piston Kit StandardDescription95" Big Bore piston kit is standard size for TC-88 models. Kit includes rings, clips, pins and 10.25:1 cast pistons.Order gasket set separately. The clearance between piston to...
    $204.46
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    $204.46
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    V-Twin - 11-0321 - 80 inch Overhead Valve Piston Set .040 Oversize V-Twin - 11-0321 - 80 inch Overhead Valve Piston Set .040 Oversize
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    V-Twin - 11-0321 - 80 inch Overhead Valve Piston Set .040 Oversize

    Motorshop

    $133.01
    V-Twin - 11-0321 - 80 inch Overhead Valve Piston Set .040 OversizeDescriptionPiston set 3-1/2" bore .040 oversize has a compression of 7:1. Set includes Hasting 3 piece rings, 2 wrist pins and 4 circlips.**Note: Run engine at moderate speeds for at least...
    $133.01
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    $133.01
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    V-Twin - 11-0319 - 80 inch Overhead Valve Piston Set .020 Oversize V-Twin - 11-0319 - 80 inch Overhead Valve Piston Set .020 Oversize
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    V-Twin - 11-0319 - 80 inch Overhead Valve Piston Set .020 Oversize

    Motorshop

    $129.88
    V-Twin - 11-0319 - 80 inch Overhead Valve Piston Set .020 OversizeDescriptionPiston set 3-1/2" bore .020 oversize has a compression of 7:1. Set includes Hasting 3 piece rings, 2 wrist pins and 4 circlips.**Note: Run engine at moderate speeds for at least...
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    V-Twin - 11-0315 - M8 Cylinder Head D-Ring
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    V-Twin - 11-0315 - M8 Cylinder Head D-Ring

    V-Twin

    $39.89
    V-Twin - 11-0315 - M8 Cylinder Head D-RingDescriptionCylinder head D-ring is used as a spacer between the cylinder head and valve cover. For M8 models. Fits:FXST 2017-UPFLT 2017-UPFLST 2017-UPFL 2017-UPAdditional Information UOM1 - EA ...
    $39.89
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    V-Twin - 11-0313 - 74 inch Overhead Valve Piston Set .060 Oversize V-Twin - 11-0313 - 74 inch Overhead Valve Piston Set .060 Oversize
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    V-Twin - 11-0313 - 74 inch Overhead Valve Piston Set .060 Oversize

    Motorshop

    $111.29
    V-Twin - 11-0313 - 74 inch Overhead Valve Piston Set .060 OversizeDescriptionPiston set 3-7/16" bore .060 oversize with compression ratio of 7.5:1. Set includes Hasting 3 piece rings, 2 wrist pins and 4 circlips. Pistons have a steel expansion control...
    $111.29
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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.