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Engine

8832 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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    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 Motorcycle Parts

    $215.69
    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...
    $215.69
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    $215.69
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    V-Twin - 11-0402 - Piston Kit .020 Oversize V-Twin - 11-0402 - Piston Kit .020 Oversize
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    V-Twin - 11-0402 - Piston Kit .020 Oversize

    Motorshop

    $155.65
    V-Twin - 11-0402 - Piston Kit .020 OversizeDescription.020 piston kit comes with .020 rings, 2 wrist pins and 4 circlips. For 45" models.Pistons have a steel expansion control strut cast as original...
    $155.65
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    $155.65
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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

    $202.37
    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...
    $202.37
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    $202.37
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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

    $144.99
    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...
    $144.99
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    $144.99
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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

    $360.27
    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...
    $360.27
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    $360.27
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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

    $330.54
    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"...
    $330.54
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    $330.54
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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

    $124.64
    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...
    $124.64
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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

    $713.81
    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...
    $713.81
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    $713.81
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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 Motorcycle Parts

    $238.01
    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...
    $238.01
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    $238.01
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    V-Twin - 11-0317 - Standard Size 80 inch Overhead Valve Piston Set V-Twin - 11-0317 - Standard Size 80 inch Overhead Valve Piston Set
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    V-Twin - 11-0317 - Standard Size 80 inch Overhead Valve Piston Set

    Motorshop

    $151.15
    V-Twin - 11-0317 - Standard Size 80 inch Overhead Valve Piston SetDescriptionPiston set is standard size 3-1/2" diameter with a compression ratio of 7:1. Set includes Hasting's three piece ring sets,...
    $151.15
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    $151.15
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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 Mfg

    $43.66
    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...
    $43.66
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    $43.66
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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

    $130.61
    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...
    $130.61
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    $130.61
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    V-Twin - 11-0300 - 1000cc Piston Set Standard Size V-Twin - 11-0300 - 1000cc Piston Set Standard Size
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    V-Twin - 11-0300 - 1000cc Piston Set Standard Size

    Motorshop

    $124.45
    V-Twin - 11-0300 - 1000cc Piston Set Standard SizeDescriptionPiston set 3-3/16" bore standard size has a compression ratio of 8.4:1. Set includes Hasting 3 piece rings, 2 wrist pins and 4 circlips...
    $124.45
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    $124.45
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    V-Twin - 11-0292 - 80 inch Evolution Piston Kit .005 Oversize V-Twin - 11-0292 - 80 inch Evolution Piston Kit .005 Oversize
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    V-Twin - 11-0292 - 80 inch Evolution Piston Kit .005 Oversize

    Motorshop

    $142.11
    V-Twin - 11-0292 - 80 inch Evolution Piston Kit .005 OversizeDescriptionReplacement 80" Evolution piston kit. Pistons are .005 over size. Our kit includes 2 cast alloy pistons, Hasting ring set,...
    $142.11
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    $142.11
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    V-Twin - 11-0285 - Upper Valve Collar Set Titanium Coated
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    V-Twin - 11-0285 - Upper Valve Collar Set Titanium Coated

    Motorshop

    $320.53
    V-Twin - 11-0285 - Upper Valve Collar Set Titanium CoatedDescriptionTitanium coated upper valve collar set for Evolution and TC-88 models.Set of four. Fits:FXD 1991-2004FXST 1984-2004FLST 1986-2004XL...
    $320.53
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    $320.53
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    V-Twin - 11-0245 - Replica 883cc Piston Set .030 Oversize V-Twin - 11-0245 - Replica 883cc Piston Set .030 Oversize
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    V-Twin - 11-0245 - Replica 883cc Piston Set .030 Oversize

    Motorshop

    $142.11
    V-Twin - 11-0245 - Replica 883cc Piston Set .030 OversizeDescriptionReplica 3" bore piston set is .030 oversize. Piston set includes Hasting rings, 2 wrist pins and 4 circlips. Pistons have a steel...
    $142.11
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    $142.11
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    V-Twin - 11-0242 - Replica 883cc Piston Set .005 Oversize V-Twin - 11-0242 - Replica 883cc Piston Set .005 Oversize
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    V-Twin - 11-0242 - Replica 883cc Piston Set .005 Oversize

    Motorshop

    $143.11
    V-Twin - 11-0242 - Replica 883cc Piston Set .005 OversizeDescriptionReplica 3" bore piston set is .005 oversize. Piston set includes Hasting rings, 2 wrist pins and 4 circlips. Pistons have a steel...
    $143.11
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    $143.11
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    V-Twin - 11-0241 - Replica 883cc Piston Set Standard V-Twin - 11-0241 - Replica 883cc Piston Set Standard
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    V-Twin - 11-0241 - Replica 883cc Piston Set Standard

    Motorshop

    $144.99
    V-Twin - 11-0241 - Replica 883cc Piston Set StandardDescriptionReplica 3" bore piston set is standard size. Set includes Hastings 3 piece ring, 2 wrist pins and 4 circlips.**Note: Run engine at...
    $144.99
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    $144.99
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  • V-Twin - 11-0228 - Replica 80 inch Overhead Valve Piston Set .020 Oversize V-Twin - 11-0228 - Replica 80 inch Overhead Valve Piston Set .020 Oversize
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    V-Twin - 11-0228 - Replica 80 inch Overhead Valve Piston Set .020 Oversize

    Motorshop

    $134.41
    V-Twin - 11-0228 - Replica 80 inch Overhead Valve Piston Set .020 OversizeDescriptionReplica 3-1/2" bore piston set has a 8:1 compression ratio and is .020 oversize. Piston set includes Hasting...
    $134.41
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    $134.41
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    V-Twin - 11-0220 - Replica 74 inch Overhead Valve Piston Set .040 Oversize V-Twin - 11-0220 - Replica 74 inch Overhead Valve Piston Set .040 Oversize
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    V-Twin - 11-0220 - Replica 74 inch Overhead Valve Piston Set .040 Oversize

    Motorshop

    $156.33
    V-Twin - 11-0220 - Replica 74 inch Overhead Valve Piston Set .040 OversizeDescriptionReplica style 3-7/16" bore piston set has a 8.5:1 compression ratio and is oversize .040. Piston set includes...
    $156.33
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    $156.33
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    V-Twin - 11-0213 - Replica 1000cc Piston Set .050 Oversize V-Twin - 11-0213 - Replica 1000cc Piston Set .050 Oversize
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    V-Twin - 11-0213 - Replica 1000cc Piston Set .050 Oversize

    Motorshop

    $135.41
    V-Twin - 11-0213 - Replica 1000cc Piston Set .050 OversizeDescriptionReplica style 3-3/16" bore piston set has a 9:1 compression ratio and is oversize .050. Piston set alloy is cast in a permanent...
    $135.41
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    $135.41
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    V-Twin - 11-0206 - Replica 900cc Piston Set .060 Oversize V-Twin - 11-0206 - Replica 900cc Piston Set .060 Oversize
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    V-Twin - 11-0206 - Replica 900cc Piston Set .060 Oversize

    Motorshop

    $144.65
    V-Twin - 11-0206 - Replica 900cc Piston Set .060 OversizeDescriptionReplica style 3" bore piston set has a 9:1 compression ratio and is oversize .060. Piston set alloy is cast in a permanent steel...
    $144.65
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    $144.65
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    V-Twin - 11-0163 - 883cc Piston Ring Set .020 Oversize V-Twin - 11-0163 - 883cc Piston Ring Set .020 Oversize
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    V-Twin - 11-0163 - 883cc Piston Ring Set .020 Oversize

    Motorshop

    MSRP: $44.82
    $43.92
    V-Twin - 11-0163 - 883cc Piston Ring Set .020 OversizeDescriptionPiston ring set is for a 3" bore & .020 oversize. Features moly top compression rings with a size of 1.5mm and chrome oil rings with...
    MSRP: $44.82
    $43.92
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    MSRP: $44.82
    $43.92
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    V-Twin - 11-0121 - 74 inch FL Piston Ring Set .040 Oversize V-Twin - 11-0121 - 74 inch FL Piston Ring Set .040 Oversize
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    V-Twin - 11-0121 - 74 inch FL Piston Ring Set .040 Oversize

    Hastings

    $98.77
    V-Twin - 11-0121 - 74 inch FL Piston Ring Set .040 OversizeDescriptionHastings cast piston ring set is for a 3-7/16" bore and is .040 oversize.Features compression rings with a size of 3/32" and oil...
    $98.77
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    $98.77
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    V-Twin - 11-0023 - 61 inch Rear MC Cast Knucklehead Cylinder
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    V-Twin - 11-0023 - 61 inch Rear MC Cast Knucklehead Cylinder

    Motorshop

    $267.20
    V-Twin - 11-0023 - 61 inch Rear MC Cast Knucklehead CylinderDescriptionRear cylinder fits Knucklehead 1936-1947 61" models. Cylinders are for stock bore, stock stroke and compression, featuring 5...
    $267.20
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    $267.20
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    V-Twin - 11-0022 - 61 inch Front MC Cast Knucklehead Cylinder
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    V-Twin - 11-0022 - 61 inch Front MC Cast Knucklehead Cylinder

    Motorshop

    $267.20
    V-Twin - 11-0022 - 61 inch Front MC Cast Knucklehead CylinderDescriptionFront cylinder fits Knucklehead 1936-1947 61" models. Cylinders are for stock bore, stock stroke and compression, featuring 5...
    $267.20
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    $267.20
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    V-Twin - 11-0021 - Finned Rocker Box Cover Set Raw
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    V-Twin - 11-0021 - Finned Rocker Box Cover Set Raw

    V-Twin Mfg

    $446.52
    V-Twin - 11-0021 - Finned Rocker Box Cover Set RawDescriptionFinned rocker box cover set features a raw finish, which can readily accept black heat paint.*NOTE: Black heat paint can aid in heat and...
    $446.52
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    $446.52
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    V-Twin - 11-0011 - M8 Shovelhead Rocker Box Cover Set
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    V-Twin - 11-0011 - M8 Shovelhead Rocker Box Cover Set

    V-Twin Mfg

    $414.61
    V-Twin - 11-0011 - M8 Shovelhead Rocker Box Cover SetDescriptionShovelhead rocker box cover set features a natural cast finish. For M8 models.Shipped in natural cast aluminum, which aids in heat...
    $414.61
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    $414.61
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    V-Twin - 11-0008 - TC-88 Shovelhead Rocker Box Cover Set Natural Cast - Fits 1999-2018 Harley-Davidson FXST, 1999-2016 FLH, 1999-2017 FLST, FXD
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    V-Twin - 11-0008 - TC-88 Shovelhead Rocker Box Cover Set Natural Cast - Fits 1999-2018 Harley-Davidson FXST, 1999-2016 FLH, 1999-2017 FLST, FXD

    V-Twin Mfg

    $446.52
    TC-88 Shovelhead rocker box set features a natural cast finish.Retro "Shovel" look for the Twin cam motors. Shipped in natural cast aluminum, which aids in heat disepation and readily painted with...
    $446.52
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    $446.52
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    V-Twin - 11-0003 - M8 Chrome Lower Rocker Box Cover
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    V-Twin - 11-0003 - M8 Chrome Lower Rocker Box Cover

    Motorshop

    $163.25
    V-Twin - 11-0003 - M8 Chrome Lower Rocker Box CoverDescriptionChrome lower rocker box cover is for M8 models.*NOTE: Requires 2. Fits:FLT 2017-UPAdditional Information
    $163.25
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    $163.25
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    V-Twin - 11-0001 - M8 Gloss Black Lower Rocker Box Cover
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    V-Twin - 11-0001 - M8 Gloss Black Lower Rocker Box Cover

    Motorshop

    $163.25
    V-Twin - 11-0001 - M8 Gloss Black Lower Rocker Box CoverDescriptionGloss Black lower rocker box cover is for M8 models.*NOTE: Requires 2. Fits:FLT 2017-UPAdditional Information
    $163.25
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    $163.25
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    V-Twin - 1021-P - Polished Engine Dress Up Bolt Kit V-Twin - 1021-P - Polished Engine Dress Up Bolt Kit
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    V-Twin - 1021-P - Polished Engine Dress Up Bolt Kit

    Colony Machine

    $105.15
    V-Twin - 1021-P - Polished Engine Dress Up Bolt KitDescriptionAllen head show bike kit for engine dress up features a polished finish. Fits:VRSC 2002-UPAdditional Information
    $105.15
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    $105.15
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    V-Twin - 10-8359 - Jims 3-Hole Crank Pin 1.250 V-Twin - 10-8359 - Jims 3-Hole Crank Pin 1.250
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    V-Twin - 10-8359 - Jims 3-Hole Crank Pin 1.250

    Jims

    $149.83
    V-Twin - 10-8359 - Jims 3-Hole Crank Pin 1.250 Description Jims crank pin is made of 8620 steel with .062 heat treated penetration. Crank pin is 3 oil hole type. Fits: XL 1957-1981 Early...
    $149.83
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    $149.83
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    V-Twin - 10-2522 - Steel Connecting Rod Bearing Cage Set V-Twin - 10-2522 - Steel Connecting Rod Bearing Cage Set
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    V-Twin - 10-2522 - Steel Connecting Rod Bearing Cage Set

    Motorshop

    $95.93
    V-Twin - 10-2522 - Steel Connecting Rod Bearing Cage Set Description Sifton steel connecting rod bearing cage set includes 4 cages, and standard size Torrington roller set. Fits: FXST...
    $95.93
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    $95.93
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    V-Twin - 10-2008 - Panhead 74 inch Short Block V-Twin - 10-2008 - Panhead 74 inch Short Block
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    V-Twin - 10-2008 - Panhead 74 inch Short Block

    Motorshop

    $4,928.69
    V-Twin - 10-2008 - Panhead 74 inch Short Block Description 74" short block is shipped fully assembled.Unit features S&S crankcases, Sifton oil and breather assembly, stock stroke flywheel, Timken...
    $4,928.69
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    $4,928.69
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    V-Twin - 10-1990 - Panhead 80 inch Short Block V-Twin - 10-1990 - Panhead 80 inch Short Block
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    V-Twin - 10-1990 - Panhead 80 inch Short Block

    Motorshop

    $5,066.27
    V-Twin - 10-1990 - Panhead 80 inch Short Block Description Shipped fully assembled.80" Panhead short block is shipped fully assembled. Unit features S&S crankcase, Sifton oil and breather assembly...
    $5,066.27
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    $5,066.27
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    V-Twin - 10-1889 - 1940 Knucklehead 8-Finned Cam Cover Polished
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    V-Twin - 10-1889 - 1940 Knucklehead 8-Finned Cam Cover Polished

    V-Twin Mfg

    $304.23
    V-Twin - 10-1889 - 1940 Knucklehead 8-Finned Cam Cover PolishedDescriptionForged aluminum 1940 Knucklehead 8-finned cam cover features a polished finish and includes the "welch" plug installed, as...
    $304.23
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    $304.23
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  • Out of stock
    V-Twin - 10-1888 - Shovelhead Case Set
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    V-Twin - 10-1888 - Shovelhead Case Set

    Motorshop

    $1,616.41
    V-Twin - 10-1888 - Shovelhead Case SetDescriptionShovelhead motor case set for flat side models with cast aluminum inner primary cover. Set includes tapered bearing assembly for left side and case...
    $1,616.41
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    $1,616.41
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    V-Twin - 10-1834 - Cam Cover Kit Cast - Fits 1999-2016 Harley-Davidson FLT, FLST, 1999-2017 FXST, FXD
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    V-Twin - 10-1834 - Cam Cover Kit Cast - Fits 1999-2016 Harley-Davidson FLT, FLST, 1999-2017 FXST, FXD

    V-Twin Mfg

    $523.52
    Cam cover kit. Cam cover trim for Twin Cam models bolts directly to the existing cam cover.Kit includes a replica cast cam cover with bushings installed, cast cam cover adapter trim and cadmium cam...
    $523.52
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    $523.52
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  • Out of stock
    V-Twin - 10-1832 - Knucklehead Cam Cover Trim Set Alloy - Fits 1999-2016 Harley-Davidson FLT, 1999-2017 FLST, FXST
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    V-Twin - 10-1832 - Knucklehead Cam Cover Trim Set Alloy - Fits 1999-2016 Harley-Davidson FLT, 1999-2017 FLST, FXST

    V-Twin Mfg

    MSRP: $414.61
    $400.31
    Knucklehead cam cover trim set attaches to the existing cam cover with a 1936 stule screw set.Kit includes an alloy 8-finned style cam cover, an inner mount ring and 12 screws. Fits:FLT 1999-2016FLST...
    MSRP: $414.61
    $400.31
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    MSRP: $414.61
    $400.31
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    Out of stock
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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

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.