V-Twin - 11-0506 - Replica 61 inch Knucklehead Cylinder Set BlackDescriptionReplica 61" Knucklehead cylinder set features cast iron construction with 4 fins above head bolt line. Original markings with a black finish and are pre fitted with cast 7.5:1...

V-Twin - 11-0499 - 74 inch Knucklehead Front CylinderDescriptionFront cylinder fits Knucklehead 1941-1947 74" models. Cylinders are for stock bore, stock stroke and compression.Cylinders must be honed to standard size for proper fit. Sold each. Piston is...

V-Twin - 11-0498 - 74 inch Knucklehead Rear CylinderDescriptionRear cylinder fits Knucklehead 1941-1947 74" models. Cylinders are for stock bore, stock stroke and compression.Cylinders must be honed to standard size for proper fit. Sold each. Piston is...

V-Twin - 11-0495 - 61 inch Knucklehead Front CylinderDescriptionFront cylinder fits Knucklehead 1936-1947 61" models. Cylinders are for stock bore, stock stroke and compression, featuring 5 fins.Cylinders must be honed to standard size for proper fit...

V-Twin - 11-0494 - 61 inch Knucklehead Rear CylinderDescriptionRear cylinder fits Knucklehead 1936-1947 61" models. Cylinders are for stock bore, stock stroke and compression, featuring 5 fins.Cylinders must be honed to standard size for proper fit. Sold...

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 fins.Cylinder have original casting marks of MoCasCo. Set...

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 fins.Cylinder have original casting marks of MoCasCo...

V-Twin - 10-8181 - Replica Lightning Cam for Knucklehead Description Replica lightning cam for 1936-1947 Knucklehead.Stock .355 lift cam with a 236 duration. Fits: EL 1936-1940 FL 1941-1947 Additional Information OEM No...

V-Twin - 10-2965 - Andrews N Grind Cam Knucklehead Description Andrews N grind cam is a stock replacement cam for Knucklehead models and 61" engines. Cam is excellent to use for stock motors or restorations. Cam lift is .355. Fits: EL...

V-Twin - 10-1939 - Replica Knucklehead Cam Cover Description Replica cam cover includes bushings and breather pipe with smooth natural finish. This OEM Replica is cast with exclusive V-Twin molds and tooling.Cam cover is exact Replica for 1937-1940 EL...

V-Twin - 10-1936 - Replica Cast Cam Cover Description Cast cover is an exact replica of the early 1936 61" EL models, perhaps for the first 200 units made that year. Cover features natural cast finish, as original!Bushings and breather plate are...

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 original, in the top and rear. Cam cover also includes...

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 1999-2017FXST 1999-2017Additional Information UOM1 -...

Set of 3 steel cages, fitted with standard size Torrington rollers for connecting rods. Cages feature copper plating. Fits:UL 1937-1948FXR 1982-1986FLT 1979-1986FXST 1984-1986FX 1971-1984EL 1936-1940FL 1941-1984FLST 1986-1986Additional Information OEM...

Includes new rods, crank pin, nuts, copper plated steel cages and standard rollers fitted and assembled.Piston pin bushings are installed and honed for stock wirst pin. Fits:FX 1971-1973FL 1941-1973Additional Information OEM No.24281-41A UOM1 - KIT ...

.006 45 piston wrist pin. Fits:R 1929-1935G 1936-1973W 1936-1952Additional Information OEM No.275-32E UOM1 - EA ManufacturerV-Twin OriginUSA 2025 Catalog Pages796

Forged aluminum 1940 Knucklehead 8-finned cam cover features a chrome finish and includes the "welch" plug installed, as original, in the top and rear. Cam cover also includes OHO oil feed hole.*NOTE: Accepts 1/4" generator screws. Cam cover bushings...

Forged aluminum 1940 Knucklehead 8-finned cam cover features a polished finish and includes the "welch" plug installed, as original, in the top and rear. Cam cover also includes OHO oil feed hole.*NOTE: Accepts 1/4" generator screws. Cam cover bushings...

V-Twin - 10-1640 - 1937 Knucklehead Head SetDescription1937 Knucklehead head set is accurately cast with the original factory markings for the 61" models and features a black finish. The heads include 61" intake nipples that are installed.Uses 1-3/8"...

Forged aluminum 1940 Knucklehead 8-finned cam cover features a natural cast finish and includes the "welch" plug installed, as original, in the top and rear. Cam cover also includes OHO oil feed hole.*NOTE: Accepts 1/4" generator screws. Cam cover...

Replica pinion right side case race standard is machined and ground to factory specifications. Fits:FL 1940-1954Additional Information UOM1 - EA ManufacturerV-Twin OriginImported 2025 Catalog Pages501

V-Twin Knucklehead cam chest kit is for use when building our replica engines.Kit includes a standard cam chest breather valve gear, a smooth cam cover, oil pump drive gear, cam case pump drive gear, cam chest pinion gear and a parkerized cam cover screw...

45" right case race.*NOTE: Must be honed to fit after installation. Fits:WL 1937-1952G 1937-1973Additional Information UOM1 - EA ManufacturerV-Twin OriginImported Tech NoteSuggested to use with #10-0977 Right Side Engine Case.Suggested to use with...

Crank pins are made of 8620 steel with .062 heat treated penetration. Crank pin is .010 oversize, 3-hole type. Fits:UL 1940-1948EL 1940-1952Additional Information UOM1 - EA MeasurementsAdditional InformationOuter Diameter: 1-1/4" ...

V-Twin Knucklehead cam chest kit is for use when building our replica engines.Kit includes Andrews N grind cam Knucklehead and all components except cam cover. All year Knucklehead cam covers are interchangeable. *NOTE: Bushings my...

V-Twin - 10-1383 - Knucklehead Engine Case SetDescriptionMotor case set features a blank number boss, there are no serial numbers on the case. The left side case features detailed shape. Sold with Bill of Sale only.Oil from top end returns through...

Includes 4 piece cam set and 4 lightning tappets with screws. Fits:WLDR 1936-1952Additional Information UOM1 - KIT ManufacturerV-Twin OriginImported 2025 Catalog Pages803 Replacement Items10-0567 - Standard Sifton Lightning Tappet Set10-0543 -...

2021 New Production machined and ground to factory specifications.*NOTE: Check spline timing in relation to key way, 12 o'clock on top, and oil hole, large spline at 3 o'clock, before installing in flywheel for final assembly and truing of flywheels...

Crank pin is heat treated 60-62RC to a case depth of .100. A special 180  oiling design will better lubricate the bearing diameter. Threads are "J" type. Pin is .025 shorter taper to taper. Fits:FX 1971-1980FL 1941-1980Additional Information UOM1 - EA ...

Standard roller bearing kit is genuine army surplus and is for use on pinion shafts of 45 models.Kit includes rollers and cages. Fits:G 1937-1973W 1937-1952Additional Information UOM1 - KIT ManufacturerV-Twin OriginImported TypePinion Shaft 2025...

2023 New Production motor case set features a blank number boss, there are no serial numbers on the case. Sold with Bill of Sale only. Includes the welch plug, and the right and left case races installed as original!Oil from top end returns through...

Flywheel thrust washer set includes 1 of each: .112, .114, .116, .118 and .120.Sold as a 5 piece set of outside flywheel thrust washers. Fits:UL 1937-1948VL 1930-1934FL 1941-1954EL 1936-1940Additional Information UOM1 - SET ManufacturerV-Twin ...

Flywheel thrust washer set includes 2 of each: .060, .066, .070, .074, .078 and .082.Sold as a 12 piece set. Fits:UL 1937-1948VL 1930-1934FL 1941-1954EL 1936-1940Additional Information UOM1 - SET ManufacturerV-Twin OriginImported

.002 roller bearing kit is genuine army surplus and is for use on pinion shafts of 45 models.Kit includes rollers and cages. Fits:G 1937-1973W 1937-1952Additional Information OEM No.414-37D UOM1 - KIT ManufacturerV-Twin OriginUSA TypePinion Shaft ...

Sifton steel connecting rod bearing cage set includes 4 cages, and standard size Torrington roller set.*NOTE: Are late style cages. Fits:WL 1937-1952G 1937-1973DL 1929-1931WL 1932-1936Additional Information OEM No.24370-29 UOM1 - SET ...

Flywheel crank pin thrust washers are .065 size and made of steel.Set of two. Fits:FL 1941-1969Additional Information UOM1 - SET ManufacturerV-Twin OriginImported

V-Twin - 10-1186 - Knucklehead Cast Tab Set Description Knucklehead Rocker Box Mount Tab Replacements include a set of two tabs made in a single mold casting.The tabs must be cut to size, one long and one short, and must be welded on.*NOTE: Holes are...

Crank pin is heat treated 60-62RC to a case depth of .100. A special 180  oiling design will better lubricate the bearing diameter. Threads are "J" type. Pin is .025 shorter taper to taper. Fits:FX 1971-1980FL 1941-1980Additional Information UOM1 - EA ...

Sifton 1-hole crank pin is made of 8620 steel with a heat treatment depth of .062".You must align oil feed in flywheels with crank pin. OEM uses two different flywheels so hole location may differ, this crank pin has the oil feed hole to fit the late...

V-Twin - 10-0980 - Knucklehead Engine Case SetDescriptionKnucklehead engine case set includes case bushings standard size rollers.Oil from top end returns through pushrod tubes. Does not return through cylinder base. Case accepts loose roller bearings on...