Engine

V-Twin - 10-1105 - 61 inch Stock Flywheel Assembly BareDescriptionTruett & Osborn 61" flywheel assembly feature original weight right and left sides with 3-1/2" stock stroke. Set is for EL models.Accepts early stepped crank pin. Fits:EL...

V-Twin - 10-1098 - Stock Flywheel AssemblyDescriptionStock flywheel assembly is shipped assembled and trued with shafts. Unit features full wieght flywheels. Assembly features replaceable pinion and sprocket shafts.Special 80" flywheel assembly is used...

V-Twin - 10-1091 - Stock Flywheel AssemblyDescriptionStock flywheel assembly is for 80" Evolution models only, assembled and trued with shafts at our V-Twin motor shop in New York.This assembly features a late type sprocket shaft, early style pinion...

V-Twin - 10-1086 - Panhead Cylinder Heads 3-5/8 inch Big BoreDescriptionV-Twin Motor Shop Ready single plug type Panheads are for use with Big Bore shovel head cylinders only. Comes assembled and are ready to install.Heads are assembled with cast iron...

V-Twin - 10-1082 - 74 inch Overhead Valve Flywheel AssemblyDescriptionShipped assembled and trued with shafts. Features a cast Sifton flywheel. Sprocket shaft is correct length to use with 1965-69 FL transmission with a mid length mainshaft. Fits:FL...

V-Twin - 10-1079 - Stock Flywheel AssemblyDescriptionFeatures full weight flywheels with removable pinion and sprocket shafts, trued and balanced for cast pistons.Unit includes forged and machined H-beam Sifton connecting rod set of certified 4340 steel...

V-Twin - 10-1074 - Panhead Cylinder Heads with ValvesDescriptionV-Twin Motor Shop Ready single plug type Panheads are fully assembled and ready to install.Heads feature original contour castings with the added detail of the late type intake and...

V-Twin - 10-1068 - Truett and Osborne Flywheel Set Bare Description Bare set features original weight right and left sides.Sold as a pair. Fits: K 1952-1956 Additional Information UOM 1 - SET Manufacturer Truett &...

V-Twin - 10-1067 - Panhead Cylinder Heads Full AssemblyDescriptionV-Twin Motor Shop Ready Panheads are fully assembled and ready to install.Heads feature original contour castings with the added detail of the late style intake and Shovelhead exhaust port...

V-Twin - 10-1066 - Panhead Cylinder Heads Full AssemblyDescriptionV-Twin Motor Shop Ready Panheads come fully assembled and ready to install.Heads feature original contour castings with the added detail of stock intake valves and exhaust port areas...

V-Twin - 10-1065 - Panhead Cylinder Heads Full AssemblyDescriptionV-Twin Motor Shop Ready Panheads are assembled and ready to install.Feature original contour castings with the added detail of the stock intake and exhaust port areas. Panheads are...

V-Twin - 10-1063 - Cylinder Head Set with Chrome Rocker BoxDescriptionSet is assembled with cast iron guides, valve stem seals, and nitrated valves.Heads have a complete valve job for maximum flow, horsepower, and torque. Heads are single plug and are...

V-Twin - 10-1049 - Truett & Osborne Flywheel SetDescriptionBare flywheels for side valve models feature original weight right and left sides. Fits:WL 1937-1952G 1937-1973DL 1929-1931WL 1932-1936Additional Information UOM2 - SET ManufacturerTruett &...

V-Twin - 10-1048 - V-Twin Stock Flywheel AssemblyDescriptionShipped assembled and trued with shafts. Features Truett & Osborne stock flywheels. Fits:FX 1971-1972FL 1970-1972Additional Information OEM No.23906-70 UOM1 - EA ManufacturerMotorshop ...

V-Twin - 10-1043 - 61 inch Stroke Flywheel Assembly BareDescriptionTruett & Osborn 61" flywheel set with stock 3-1/2" stroke features original weight right and left sides. Set is for EL models.Flywheel accepts later tapered pin 1941-1980 type. *NOTE:...

V-Twin - 10-1042 - V-Twin Stock Flywheel AssemblyDescriptionShipped assembled and trued with shafts. Features replaceable pinion and sprocket shafts. Use on carbureted models only.Requires the separate purchase of the pinion shaft conversion gear kit...

V-Twin - 10-1034 - V-Twin Stock Flywheel AssemblyDescriptionShipped assembled and trued with shafts. Fits:FL 1955-1957Additional Information OEM No.23907-55A UOM1 - EA ManufacturerMotorshop OriginUSA 2025 Catalog Pages482 Replacement Items17-0913 -...

V-Twin - 10-1030 - Truett and Osborne Stock Flywheel SetDescriptionFlywheel set features original weight right and left sides.Sold as a pair. Fits:XL 1981-1985Additional Information OEM No.23916-81 UOM1 - SET ManufacturerTruett & Osborn OriginUSA...

V-Twin - 10-1029 - Truett and Osborne Stock Flywheel SetDescriptionFlywheel set feature original weight right and left sides with stock stroke. Fits:FL 1970-1971FX 1971Additional Information UOM1 - SET ManufacturerTruett & Osborn OriginUSA 2025...

V-Twin - 10-1028 - Truett and Osborne Stock Flywheel SetDescriptionFlywheel set features original weight right and left sides with stock stroke. Fits:FX 1972-1978FL 1972-1978Additional Information UOM1 - SET ManufacturerTruett & Osborn OriginUSA ...

V-Twin - 10-1027 - Truett and Osborne Flywheel Set StockDescriptionFlywheel set feature original weight right and left sides.*NOTE: Flywheel made with the 1941-up Overhead Valve crankpin, NOT the stepped crankpin as original. Fits:UL 1937-1948Additional...

V-Twin - 10-1026 - Truett and Osborne Stock Flywheel SetDescriptionFlywheel set with 6  taper features original weight right and left sides with stock stroke. Fits:FLT 1981-1984FXR 1982-1984FL 1981-1984FX 1981-1984Additional Information UOM1 - SET ...

V-Twin - 10-1012 - Truett and Osborne Stock Flywheel SetDescriptionTruett and Osborne stock flywheel set features original weight right and left sides. Fits:XL 1957-1980Additional Information OEM No.23916-57A UOM1 - SET MeasurementsAdditional...

V-Twin - 10-1008 - 4 inch Stroke V-Twin Flywheel AssemblyDescriptionFlywheel assembly with 4" stock stroke is shipped assembled and trued with shafts.*NOTE: Tapered bearing shims for final assembly are available separately. Fits:FL 1958-1964Additional...

V-Twin - 10-1007 - V-Twin Stock Flywheel AssemblyDescription74" flywheel assembly is shipped assembled and trued with shafts, for 1941-1953 FL models. Fits:FL 1941-1953Additional Information UOM1 - EA ManufacturerMotorshop OriginUSA 2025 Catalog...

V-Twin - 10-1006 - Truett and Osborne 4 inch Stroke Flywheel AssemblyDescriptionFlywheel assembly feature original weight right and left sides with 4" stroke. Fits:FL 1956-1969Additional Information OEM No.23919-56 UOM1 - SET MeasurementsAdditional...

V-Twin - 10-1005 - Truett and Osborne Stock Flywheel AssemblyDescriptionFlywheel assembly feature original weight right and left sides with stock stroke. Fits:FL 1941-1953Additional Information OEM No.23940-41 UOM2 - SET MeasurementsAdditional...

V-Twin - 10-0991 - Left Side Engine CaseDescriptionCase is a reproduction of the original 45 cubic inch left side case, features a bare as cast aluminum finish.Case is blank, without serial numbers. Will fit WL right side case. Cylinder base area and...

V-Twin - 10-0990 - Solid Lightning Tappet Set .010 OversizeDescriptionSifton solid tappet set includes installed roller assembly.Adjuster screws are not included. Fits:WL 1937-1952UL 1937-1948KH 1954-1956G 1949-1973VL 1930-1936WL 1932-1936Additional...

V-Twin - 10-0989 - Solid Lightning Tappet Set .005 OversizeDescriptionAssembly is .005 oversize with rollers installed.Adjuster screws are not included. Fits:WL 1937-1952UL 1937-1948KH 1954-1956G 1949-1973VL 1930-1936WL 1932-1936Additional Information ...

V-Twin - 10-0978 - Shovelhead Cam Chest Assembly KitDescriptionShovelhead cam chest kit includes a smooth finish cast cam cover and all internal parts for assembly.*NOTE: Check the pinion and cam gears tolerance during assembly. Required to use with OHO...

V-Twin - 10-0977 - Right Side Engine CaseDescription45" right side engine case includes bronze cam bushings installed.*NOTE: This is the right hand case, requires case race to be installed when paired with V-Twin #10-0991 Left Side Engine Case, or...

V-Twin - 10-0964 - Cam Chest Bushing SetDescriptionCam chest bushing is sold in a set of four. Fits:G 1937-1973U 1937-1948W 1937-1952Additional Information UOM4 - SET ManufacturerEastern OriginImported 2025 Catalog Pages798 Replacement Items10-0716...

V-Twin - 10-0951 - Sifton .040 inch Case Race Left SideDescriptionMachined and ground to factory specifications.*NOTE: Outside is .040" oversize, machine case to accept larger case bushings. Barrel spigot holes must be machined to match after...

V-Twin - 10-0945 - Knucklehead 74 inch Engine Case Set NaturalDescription74" motor case for knucklehead motors accurately cast and machined. Features a natural cast finish and a blank number boss. Manufacturer's Bill of Sale available upon request.Case...

V-Twin - 10-0942 - 1936 61 inch Knucklehead Engine Case SetDescriptionFor 61" Knucklehead motors accurately cast and machined by Motortechnic in Germany. Features a natural cast finish and a blank number boss.Set accepts large or small OD flywheels that...

V-Twin - 10-0940 - WR Rod Cage and Roller SetDescriptionRod cage and roller set includes 4 cages, 18 long rollers and 36 short rollers.Set of four cages. Fits:XL 1957-1980WR 1936-1952Additional Information UOM1 - KIT ManufacturerMotorshop ...

V-Twin - 10-0939 - Sifton Hydraulic Chain Tensioner SetDescriptionBillet aluminum cam chain drive tensioner set includes left and right hydraulic chain tensioner assemblies for exact fit as OEM on TC-88 models. Fits:FLH 1999-2016FXD 1999-2017Additional...

V-Twin - 10-0938 - Left Side Engine CaseDescriptionLeft side engine case for aluminum electric start inner primary application on 1965 Panhead and 1966-69 Flat Side Shovelhead engines.Left hand case must be fit to existing right side case. Cylinder deck...

V-Twin - 10-0937 - Left Side Panhead Engine CaseDescriptionLeft side engine case features a blank number boss.Left hand case must be fit to existing right side case. Number boss is blank. Will accept Timken roller bearing assembly, not included. Cylinder...