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Knucklehead Parts

Knucklehead Parts

Shop the best parts for your Harley-Davidson Knucklehead motorcycle at Deadbeat Customs. The collection includes engine components, oil system parts, rocker boxes, exhaust components, ignition parts, fuel system components and restoration hardware for 1936-1947 Knucklehead models. Designed for dependable performance and authentic restorations, these parts complement Harley engine parts and vintage motorcycle restoration parts.


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  • V-Twin - 51-1939 - Replica inchHM inch Knucklehead 28  Rake Frame V-Twin - 51-1939 - Replica inchHM inch Knucklehead 28  Rake Frame

    V-Twin - 51-1939 - Replica inchHM inch Knucklehead 28  Rake Frame

    V-Twin Mfg

    $2,712.33
    V-Twin - 51-1939 - Replica inchHM inch Knucklehead 28  Rake FrameDescriptionReplica frame is an authentic reproduction of the factory style featuring 13 brazed joints. The 28  rake neck angle will...
    $2,712.33
    Qty in Cart: 0
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    $2,712.33
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    V-Twin - 51-1940 - Replica Knucklehead Frame 28  Rake

    V-Twin - 51-1940 - Replica Knucklehead Frame 28  Rake

    V-Twin Mfg

    $2,317.07
    V-Twin - 51-1940 - Replica Knucklehead Frame 28  RakeDescriptionReplica frame is an authentic reproduction of the factory style with brazed joints. Frame will accommodate Knucklehead or Big Twin...
    $2,317.07
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    $2,317.07
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  • V-Twin - 51-1942 - Replica inchHM inch Knucklehead 29  Rake Rigid Frame V-Twin - 51-1942 - Replica inchHM inch Knucklehead 29  Rake Rigid Frame

    V-Twin - 51-1942 - Replica inchHM inch Knucklehead 29  Rake Rigid Frame

    V-Twin Mfg

    $2,687.51
    V-Twin - 51-1942 - Replica inchHM inch Knucklehead 29  Rake Rigid FrameDescriptionKnucklehead rigid frame with a 29  rake neck angle is an authentic reproduction of the factory style featuring 12...
    $2,687.51
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    $2,687.51
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  • Out of stock
    V-Twin - 51-1946 - Replica inchHM inch Knucklehead 30  Rake Frame V-Twin - 51-1946 - Replica inchHM inch Knucklehead 30  Rake Frame

    V-Twin - 51-1946 - Replica inchHM inch Knucklehead 30  Rake Frame

    V-Twin Mfg

    $2,687.51
    V-Twin - 51-1946 - Replica inchHM inch Knucklehead 30  Rake FrameDescriptionKnucklehead frame is an authentic reproduction of the factory style bull neck frames, with numbered forgings, seat post...
    $2,687.51
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    $2,687.51
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  • Out of stock
    V-Twin - 51-1947 - Replica Knucklehead 30  Rake Frame V-Twin - 51-1947 - Replica Knucklehead 30  Rake Frame

    V-Twin - 51-1947 - Replica Knucklehead 30  Rake Frame

    V-Twin Mfg

    $2,383.77
    V-Twin - 51-1947 - Replica Knucklehead 30  Rake FrameDescriptionKnucklehead frame is an authentic reproduction of the factory style bull neck frames, featuring 13 brazed joints.Forged parts included...
    $2,383.77
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    $2,383.77
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  • V-Twin - 51-3647 - Knucklehead Raw Front Engine Mount - Fits 1936-1947 Harley-Davidson EL, 1937-1948 U, 1941-1947 FL V-Twin - 51-3647 - Knucklehead Raw Front Engine Mount - Fits 1936-1947 Harley-Davidson EL, 1937-1948 U, 1941-1947 FL

    V-Twin - 51-3647 - Knucklehead Raw Front Engine Mount - Fits 1936-1947 Harley-Davidson EL, 1937-1948 U, 1941-1947 FL

    V-Twin Mfg

    $332.57
    Raw front engine mount features detailed forging with DIF numbers, fully machined.Front engine mount is authentically constructed with DIF forge mark and casting marks. Must be assembled by a...
    $332.57
    Qty in Cart: 0
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    $332.57
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  • Out of stock
    V-Twin - 51-3757 - Knucklehead Front Frame Loop Set - Fits 1955-1957 Harley-Davidson FL, 1936-1947 EL, 1937-1948 U, 1941-1947 FL

    V-Twin - 51-3757 - Knucklehead Front Frame Loop Set - Fits 1955-1957 Harley-Davidson FL, 1936-1947 EL, 1937-1948 U, 1941-1947 FL

    V-Twin Mfg

    $335.79
    Frame loop set is authentically forged in construction to fit the right and left set. Use on straight leg frames. Fits:FL 1955-1957EL 1936-1947U 1937-1948FL 1941-1947Additional Information
    $335.79
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    $335.79
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  • Out of stock
    V-Twin - 52-1936 - 18 inch x 2.5 Replica F-H Trog Style Star Hub Wheel V-Twin - 52-1936 - 18 inch x 2.5 Replica F-H Trog Style Star Hub Wheel

    V-Twin - 52-1936 - 18 inch x 2.5 Replica F-H Trog Style Star Hub Wheel

    V-Twin Mfg

    $569.64
    V-Twin - 52-1936 - 18 inch x 2.5 Replica F-H Trog Style Star Hub Wheel Description 2.5" x 18" wheel features a black hub with internals, a black rim, a cadmium spoke and nipple set and French &...
    $569.64
    Qty in Cart: 0
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    $569.64
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  • Out of stock
    V-Twin - 55-0012 - Replica Knucklehead  inchBull Neck inch Frame Assembly - Fits 1946-1947 Harley-Davidson UL, EL, FL V-Twin - 55-0012 - Replica Knucklehead  inchBull Neck inch Frame Assembly - Fits 1946-1947 Harley-Davidson UL, EL, FL

    V-Twin - 55-0012 - Replica Knucklehead inchBull Neck inch Frame Assembly - Fits 1946-1947 Harley-Davidson UL, EL, FL

    V-Twin Mfg

    $3,726.72
    Replica Knucklehead "Bull Neck" frame assembly includes seat post, and transmission mount plate.Assembly includes a black 18" offset Spring Fork assembly, a rear axle assembly and a brake cross shaft...
    $3,726.72
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    $3,726.72
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  • Out of stock
    V-Twin - 55-1081 - Knucklehead Frame and Fork Kit - Fits 1937-1947 Harley-Davidson UL, 1936-1947 EL, 1941-1947 FL

    V-Twin - 55-1081 - Knucklehead Frame and Fork Kit - Fits 1937-1947 Harley-Davidson UL, 1936-1947 EL, 1941-1947 FL

    V-Twin Mfg

    $4,056.06
    Knucklehead frame and fork kit includes frame that is the 1936 replica tupe and black spring fork assembly with a 1" stem. Fits:UL 1937-1947EL 1936-1947FL 1941-1947Additional Information
    $4,056.06
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    $4,056.06
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  • Out of stock
    V-Twin - 55-3839 - Replica 1939 Knucklehead Rolling Chassis Kit

    V-Twin - 55-3839 - Replica 1939 Knucklehead Rolling Chassis Kit

    V-Twin Mfg

    $3,734.32
    V-Twin - 55-3839 - Replica 1939 Knucklehead Rolling Chassis KitDescriptionV-Twin Relica rolling chassis kit accepts a Knucklehead or UL engine.Includes a raw 28  replica frame with transmission plate...
    $3,734.32
    Qty in Cart: 0
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    $3,734.32
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  • Out of stock
    V-Twin - 7348-40T - Knucklehead Rocker Tin Set - Fits 1941-1947 Harley-Davidson FL, 1937-1940 EL

    V-Twin - 7348-40T - Knucklehead Rocker Tin Set - Fits 1941-1947 Harley-Davidson FL, 1937-1940 EL

    V-Twin Mfg

    $94.88
    Knucklehead rocker tin set includes chrome covers and mount strip set with screws and gaskets. Fits:FL 1941-1947EL 1937-1940Additional Information UOM
    $94.88
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    $94.88
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  • V-Twin - Black and White Knucklehead Engine Patches

    V-Twin - Black and White Knucklehead Engine Patches

    V-Twin Mfg

    $14.41
    V-Twin - Black and White Knucklehead Engine Patches Patches with black and white Knucklehead Engine lineart design can be easily ironed or sewn on. Set of two. Note: When using an electric iron to...
    $14.41
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    $14.41
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  • V-Twin - Chrome Knucklehead Exhaust Header fits '36-'40 EL, '41-'47 FL Models V-Twin - Chrome Knucklehead Exhaust Header fits '36-'40 EL, '41-'47 FL Models

    V-Twin - Chrome Knucklehead Exhaust Header fits '36-'40 EL, '41-'47 FL Models

    V-Twin Mfg

    $226.13
    V-Twin - Chrome Knucklehead Exhaust Header fits '36-'40 EL, '41-'47 FL Models Chrome Knucklehead exhaust header three piece set for use on mufflers with built in "Y" pipe. Four piece header set...
    $226.13
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    $226.13
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  • V-Twin - Chrome Knucklehead Rocker Tin Set fits '36-'47 EL, '41-'47 FL Model V-Twin - Chrome Knucklehead Rocker Tin Set fits '36-'47 EL, '41-'47 FL Model

    V-Twin - Chrome Knucklehead Rocker Tin Set fits '36-'47 EL, '41-'47 FL Model

    V-Twin Mfg

    $94.88
    V-Twin - Chrome Knucklehead Rocker Tin Set fits '36-'47 EL, '41-'47 FL Model New 2022 Production. Knucklehead rocker tin set is manufactured with the correct thickness and form for fit and features a...
    $94.88
    Qty in Cart: 0
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    $94.88
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  • V-Twin - Knucklehead Nickel Plated Rocker Box Cap with Fitting fits '36-'37 EL Model V-Twin - Knucklehead Nickel Plated Rocker Box Cap with Fitting fits '36-'37 EL Model

    V-Twin - Knucklehead Nickel Plated Rocker Box Cap with Fitting fits '36-'37 EL Model

    V-Twin Mfg

    $55.24
    V-Twin - Knucklehead Nickel Plated Rocker Box Cap with Fitting fits '36-'37 EL Model Nickel plated cap includes a screw-in fitting for front rocker boxes on 1936 61" Knuckleheads only. Note: Set...
    $55.24
    Qty in Cart: 0
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    $55.24
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  • Out of stock
    V-Twin - Knucklehead Nickel Plated Rocker Box Fitting fits '36-'37 EL Model V-Twin - Knucklehead Nickel Plated Rocker Box Fitting fits '36-'37 EL Model

    V-Twin - Knucklehead Nickel Plated Rocker Box Fitting fits '36-'37 EL Model

    V-Twin Mfg

    MSRP: $49.01
    $44.55
    V-Twin - Knucklehead Nickel Plated Rocker Box Fitting fits '36-'37 EL Model Knucklehead rocker box fitting features a nickel plated finish. Fitment: EL 1936-1937
    MSRP: $49.01
    $44.55
    Qty in Cart: 0
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    MSRP: $49.01
    $44.55
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  • V-Twin - Knucklehead Rocker Box Cap with Fitting fits '36-'37 EL Model (OEM #97-36) V-Twin - Knucklehead Rocker Box Cap with Fitting fits '36-'37 EL Model (OEM #97-36)

    V-Twin - Knucklehead Rocker Box Cap with Fitting fits '36-'37 EL Model (OEM #97-36)

    V-Twin Mfg

    $54.47
    V-Twin - Knucklehead Rocker Box Cap with Fitting fits '36-'37 EL Model (OEM #97-36) Natural brass cap includes a screw-in fitting for front rocker boxes on 1936 61" Knuckleheads only. Machined of...
    $54.47
    Qty in Cart: 0
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    $54.47
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  • V-Twin - Knucklehead Rocker Box Fitting fits '36-'37 EL Model (OEM #94-36) V-Twin - Knucklehead Rocker Box Fitting fits '36-'37 EL Model (OEM #94-36)

    V-Twin - Knucklehead Rocker Box Fitting fits '36-'37 EL Model (OEM #94-36)

    V-Twin Mfg

    $47.78
    V-Twin - Knucklehead Rocker Box Fitting fits '36-'37 EL Model (OEM #94-36) Knucklehead rocker box fitting features a brass finish. Machined of brass should be cadmium plated by customer for...
    $47.78
    Qty in Cart: 0
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    $47.78
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  • V-Twin - Knucklehead Rocker Box Retaining Ring fits '36-'40 EL Model (OEM #124-36) V-Twin - Knucklehead Rocker Box Retaining Ring fits '36-'40 EL Model (OEM #124-36)

    V-Twin - Knucklehead Rocker Box Retaining Ring fits '36-'40 EL Model (OEM #124-36)

    V-Twin Mfg

    $54.47
    V-Twin - Knucklehead Rocker Box Retaining Ring fits '36-'40 EL Model (OEM #124-36) Knucklehead rocker box retaining rings features a parkerized finish. Fitment: EL 1936-1940
    $54.47
    Qty in Cart: 0
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    $54.47
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  • V-Twin - Replica 1936 Knucklehead Raw Oil Tank fits '38-'47 UL, '36-'40 EL, '41-'57 FL Models V-Twin - Replica 1936 Knucklehead Raw Oil Tank fits '38-'47 UL, '36-'40 EL, '41-'57 FL Models

    V-Twin - Replica 1936 Knucklehead Raw Oil Tank fits '38-'47 UL, '36-'40 EL, '41-'57 FL Models

    V-Twin Mfg

    $402.64
    V-Twin - Replica 1936 Knucklehead Raw Oil Tank fits '38-'47 UL, '36-'40 EL, '41-'57 FL Models Replica 1936 Knucklehead wrap around oil tank, is the original type with female fittings for banjo bolts...
    $402.64
    Qty in Cart: 0
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    $402.64
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Knucklehead Parts Restoration Systems – Classic Engine Components & Replacement Parts

Knucklehead Parts offers quality replacement and restoration components for classic Harley-Davidson Knucklehead motorcycles. The lineup includes engine cases, cylinders, cylinder heads, rocker boxes, cam chest components, valve train parts, oil pumps, oil lines, distributor assemblies and engine hardware built to support reliable rebuilds and period-correct restorations. These products work perfectly with Harley engine parts, motorcycle gaskets, ignition components and motorcycle oil system parts.

 

The product range also includes exhaust systems, air cleaners, carburetor components, fuel tanks, frame parts, manuals, restoration hardware and vintage accessories for 1936-1947 Knucklehead models. Whether you're replacing worn components or completing a full restoration, Knucklehead Parts provides dependable solutions that pair with motorcycle exhaust systems, motorcycle carburetors, motorcycle fuel system parts, motorcycle engine rebuild kits and vintage Harley parts.

 

Shop Knucklehead Parts at Deadbeat Customs for premium parts that help keep classic Harley-Davidson motorcycles running and looking their best. Complete your project with Harley replacement parts, classic motorcycle parts, motorcycle engine components, motorcycle restoration hardware and vintage Harley accessories.