Skip to content
Your Headquarters For Harley Davidson After-market Parts
Your Headquarters For Harley Davidson After-market Parts

classic prodgroup Engine - Bottom End

Filters

  • Sold out
    $318.24 - $318.24
    $318.24
    $385.73
    $385.73 - $385.73
    $385.73

    Side Valve Oil Feed Pump Assembly Parkerized

    V-TWIN MANUFACTURING
    Out of stock

    2022 New Production oil feed pump assembly is for W G and U side valve models. Assembly features a parkerized finish. FITMENT1937 / 1973 G 1937...

    View full details
    $318.24 - $318.24
    $318.24
    $385.73
    $385.73 - $385.73
    $385.73
    Sold out
  • Sold out
    $93.75 - $93.75
    $93.75
    $118.75
    $118.75 - $118.75
    $118.75

    Scavenger Oil Pump Gear

    V-TWIN MANUFACTURING
    Out of stock

    Side Valve scavenger oil pump gear features a double evacuation window for more scaveging action. FITMENT1937 / 1952 UL 1937 / 1973 G ACCESSORY...

    View full details
    $93.75 - $93.75
    $93.75
    $118.75
    $118.75 - $118.75
    $118.75
    Sold out
  • Sold out
    $53.44 - $53.44
    $53.44
    $53.44 - $53.44
    $53.44

    Scavenger Pump and Breather Valve Drive Gear

    V-TWIN MANUFACTURING
    Out of stock

    2022 New Production scavenger pump and breather valve drive gear for pinion shaft. 4 spline drive gear is used to drive the scavenger pump and brea...

    View full details
    $53.44 - $53.44
    $53.44
    $53.44 - $53.44
    $53.44
    Sold out
  • Sold out
    $773.74 - $773.74
    $773.74
    $858.95
    $858.95 - $858.95
    $858.95

    Truett & Osborne Flywheel Set

    V-TWIN MANUFACTURING
    Out of stock

    Bare flywheels for Side Valve models feature original weight right and left sides. Tapers accept OE crank pin.FITMENT1941 / 1952 WL 1941 / 1973 G ...

    View full details
    $773.74 - $773.74
    $773.74
    $858.95
    $858.95 - $858.95
    $858.95
    Sold out
  • Sold out
    $45.43 - $45.43
    $45.43
    $59.42
    $59.42 - $59.42
    $59.42

    45 inch Right Case Race

    V-TWIN MANUFACTURING
    Out of stock

    45 inch right case race. *NOTE: Must be honed to fit after installation.FITMENT1937 / 1952 WL 1937 / 1973 G ACCESSORY ITEMS10-021810-0255TECH NOT...

    View full details
    $45.43 - $45.43
    $45.43
    $59.42
    $59.42 - $59.42
    $59.42
    Sold out
  • Sold out
    $597.39 - $597.39
    $597.39
    $698.47
    $698.47 - $698.47
    $698.47

    Sifton 45 Flywheel Assembly

    V-TWIN MANUFACTURING
    Out of stock

    Sifton 45 flywheel assembly is fully assembled and includes Sifton cast flywheel set with pin crank rods bushing and rollers with shafts. FITMEN...

    View full details
    $597.39 - $597.39
    $597.39
    $698.47
    $698.47 - $698.47
    $698.47
    Sold out
  • Sold out
    $69.10 - $69.10
    $69.10
    $83.82
    $83.82 - $83.82
    $83.82

    45 inch Left Side Case Race Standard

    V-TWIN MANUFACTURING
    Out of stock

    45 inch left side standard case race is machined and ground to factory specifications. FITMENT1939 / 1952 WL 1939 / 1973 G ACCESSORY ITEMS10-022...

    View full details
    $69.10 - $69.10
    $69.10
    $83.82
    $83.82 - $83.82
    $83.82
    Sold out
  • Sold out
    $119.03 - $119.03
    $119.03
    $135.97
    $135.97 - $135.97
    $135.97

    Zinc Rear Tappet Block Set

    V-TWIN MANUFACTURING
    Out of stock

    Zinc rear honed tappet block set. FITMENT1937 / 1973 G 1937 / 1952 WL 1929 / 1952 W 1930 / 1936 V 1937 / 1938 U ACCESSORY ITEMS8103-169622-16...

    View full details
    $119.03 - $119.03
    $119.03
    $135.97
    $135.97 - $135.97
    $135.97
    Sold out
  • Sold out
    $39.22 - $39.22
    $39.22
    $47.20
    $47.20 - $47.20
    $47.20

    Crankcase Sprocket Shaft Roller Bearing Retainer 1929 / 1931 DL 1932 / 1952 WL 1932 / 1973 G

    V-TWIN MANUFACTURING
    Out of stock

    Crankcase sprocket shaft roller bearing retainer. Sold as a pair. *NOTE: Some applications use a 1.35 O.D. cage.FITMENT 1929 / 1931 DL 1932 / 195...

    View full details
    $39.22 - $39.22
    $39.22
    $47.20
    $47.20 - $47.20
    $47.20
    Sold out
  • Sold out
    $130.07 - $130.07
    $130.07
    $166.57
    $166.57 - $166.57
    $166.57

    Side Valve Feed Pump Upgrade 1937 / 1940 W 1952 / 1973 G 1952 / 1952 W 1937 / 1940 U

    V-TWIN MANUFACTURING
    Out of stock

    Feed pump upgrade for cast pump flat type as on 80 Side Valve and late G models. Includes rotor with 4 vanes for added oil pressure! Installatio...

    View full details
    $130.07 - $130.07
    $130.07
    $166.57
    $166.57 - $166.57
    $166.57
    Sold out
  • Sold out
    $73.47 - $73.47
    $73.47
    $88.70
    $88.70 - $88.70
    $88.70

    Replica 45 Rod Cage Kit Steel 1929 / 1931 DL 1932 / 1936 WL 1937 / 1952 WL 1932 / 1973 G

    V-TWIN MANUFACTURING
    Out of stock

    Replica steel rod cage kit includes standard size roller set. Kit includes 4 cages with 24 short rollers featuring 12 1/4 x .270 rollers and 1/4 x...

    View full details
    $73.47 - $73.47
    $73.47
    $88.70
    $88.70 - $88.70
    $88.70
    Sold out
  • Sold out
    $43.53 - $43.53
    $43.53
    $54.43
    $54.43 - $54.43
    $54.43

    Cam Cover Gasket 1937 / 1948 UL

    V-TWIN MANUFACTURING
    Out of stock

    Gear cover gasket for side valve FITMENT 1937 / 1948 UL ACCESSORY ITEMS16-052941-016841-0151

    $43.53 - $43.53
    $43.53
    $54.43
    $54.43 - $54.43
    $54.43
    Sold out
  • Sold out
    $59.92 - $59.92
    $59.92
    $72.50
    $72.50 - $72.50
    $72.50

    Oil Pump Bypass Valve Kit 1933 / 1936 VL 1937 / 1948 UL 1941 / 1952 WL 1941 / 1973 G

    V-TWIN MANUFACTURING
    Out of stock

    Oil pump bypass valve kit includes spring plug and screw. FITMENT 1933 / 1936 VL 1937 / 1948 UL 1941 / 1952 WL 1941 / 1973 G ACCESSORY ITEMS4...

    View full details
    $59.92 - $59.92
    $59.92
    $72.50
    $72.50 - $72.50
    $72.50
    Sold out
  • Sold out
    $80.55 - $80.55
    $80.55
    $105.88
    $105.88 - $105.88
    $105.88

    Crankcase Sprocket Shaft Bearing Assembly 1929 / 1931 DL 1937 / 1952 WL 1932 / 1973 G

    V-TWIN MANUFACTURING
    Out of stock

    Crankcase sprocket shaft bearing assembly includes standard rollers. FITMENT 1929 / 1931 DL 1937 / 1952 WL 1932 / 1973 G ACCESSORY ITEMS16-0529...

    View full details
    $80.55 - $80.55
    $80.55
    $105.88
    $105.88 - $105.88
    $105.88
    Sold out
  • Sold out
    $546.28 - $546.28
    $546.28
    $676.59
    $676.59 - $676.59
    $676.59

    Sifton 45 WR Cam Set 1937 / 1973 G 1937 / 1952 W

    V-TWIN MANUFACTURING
    Out of stock

    Sifton 4 piece 45 WR cam set for use with bushings features the original design lobes by Tom Sifton in the late 1940's. For use with roller tapp...

    View full details
    $546.28 - $546.28
    $546.28
    $676.59
    $676.59 - $676.59
    $676.59
    Sold out
  • Sold out
    $32.64 - $32.64
    $32.64
    $36.61
    $36.61 - $36.61
    $36.61

    Cam Cover Bushing 1937 / 1952 WL 1937 / 1957 G

    V-TWIN MANUFACTURING
    Out of stock

    Bushing for cam cover bushing for side valve models. FITMENT 1937 / 1952 WL 1937 / 1957 G ACCESSORY ITEMS16-052941-016841-0151

    $32.64 - $32.64
    $32.64
    $36.61
    $36.61 - $36.61
    $36.61
    Sold out
  • Sold out
    $194.71 - $194.71
    $194.71
    $223.08
    $223.08 - $223.08
    $223.08

    Engine Pinion Shaft 1937 / 1952 WL 1937 / 1973 G

    V-TWIN MANUFACTURING
    Out of stock

    Pinion shaft is precision ground for correct fitment. Shaft includes plug. FITMENT 1937 / 1952 WL 1937 / 1973 G ACCESSORY ITEMS10-043312-056010-...

    View full details
    $194.71 - $194.71
    $194.71
    $223.08
    $223.08 - $223.08
    $223.08
    Sold out
  • Sold out
    $68.22 - $68.22
    $68.22
    $73.67
    $73.67 - $73.67
    $73.67

    Sprocket Shaft 1925 / 1929 J

    V-TWIN MANUFACTURING
    Out of stock

    Machined and hardened to factory specifications. FITMENT 1925 / 1929 J ACCESSORY ITEMS16-052941-016841-0151

    $68.22 - $68.22
    $68.22
    $73.67
    $73.67 - $73.67
    $73.67
    Sold out
  • Sold out
    $29.02 - $29.02
    $29.02
    $36.35
    $36.35 - $36.35
    $36.35

    Crank Pin Nut and Lock Kit 1929 / 1931 DL 1932 / 1936 WL 1937 / 1952 WL 1937 / 1973 G

    V-TWIN MANUFACTURING
    Out of stock

    Includes 2 nuts 2 locks and mount screws. Nuts and locks are also available separatelyFITMENT 1929 / 1931 DL 1932 / 1936 WL 1937 / 1952 WL 193...

    View full details
    $29.02 - $29.02
    $29.02
    $36.35
    $36.35 - $36.35
    $36.35
    Sold out
  • Sold out
    $165.29 - $165.29
    $165.29
    $185.91
    $185.91 - $185.91
    $185.91

    Right Side Case Race Standard 1939 / 1952 WL 1939 / 1973 G

    V-TWIN MANUFACTURING
    Out of stock

    Standard right side case race is machined and ground to factory specifications. Race has an outer diameter of 1.753 . FITMENT 1939 / 1952 WL 193...

    View full details
    $165.29 - $165.29
    $165.29
    $185.91
    $185.91 - $185.91
    $185.91
    Sold out
  • Sold out
    $754.69 - $754.69
    $754.69
    $938.53
    $938.53 - $938.53
    $938.53

    WLDR Cam and Tappet Kit 1936 / 1952 WLDR

    V-TWIN MANUFACTURING
    Out of stock

    Includes 4 piece cam set and 4 lightning tappets with screws. FITMENT 1936 / 1952 WLDR ACCESSORY ITEMS10-194710-194610-1804REPLACEMENT PARTS10-0543

    $754.69 - $754.69
    $754.69
    $938.53
    $938.53 - $938.53
    $938.53
    Sold out
  • Sold out
    $280.53 - $280.53
    $280.53
    $340.13
    $340.13 - $340.13
    $340.13

    WR Lifter Set 1941 / 1973 WR

    V-TWIN MANUFACTURING
    Out of stock

    WR Lifter set is the competition shoe type lifter. FITMENT 1941 / 1973 WR

    $280.53 - $280.53
    $280.53
    $340.13
    $340.13 - $340.13
    $340.13
    Sold out
  • Sold out
    $234.11 - $234.11
    $234.11
    $282.50
    $282.50 - $282.50
    $282.50

    UL Rear Rod Only 1937 / 1948 U 1937 / 1948 UL

    V-TWIN MANUFACTURING
    Out of stock

    UL rear male connecting rod with bushing and race. FITMENT 1937 / 1948 U 1937 / 1948 UL ACCESSORY ITEMS10-026516-0529

    $234.11 - $234.11
    $234.11
    $282.50
    $282.50 - $282.50
    $282.50
    Sold out
  • Sold out
    $128.47 - $128.47
    $128.47
    $164.33
    $164.33 - $164.33
    $164.33

    45 WR Tappet Block Set 1937 / 1952 WL

    V-TWIN MANUFACTURING
    Out of stock

    WR Tappet block set is the flat style type for WR racing applications. This is a 4 piece set. For use with WR cam set. *NOTE: Hardened and fine gro...

    View full details
    $128.47 - $128.47
    $128.47
    $164.33
    $164.33 - $164.33
    $164.33
    Sold out