Rockers
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V-Twin - 37-0565 - Rocker Box Cover Screw Set Parkerized
Colony Machine
$27.15V-Twin - 37-0565 - Rocker Box Cover Screw Set ParkerizedDescriptionRocker box cover hex head flat screw set with a parkerized finish.Sold as a set of 34 pieces. Fits:FL 1941-1947EL 1936-1940 KnuckleheadAdditional Information OEM No.3477 UOM1 - SET ...$27.15 -
V-Twin - 37-0043 - Rocker Box Screw Kit Chrome
V-Twin
$49.89V-Twin - 37-0043 - Rocker Box Screw Kit ChromeDescriptionRocker box screw kit with a chrome finish. Fits:FLT 1999-2016FXST 1999-UPFLST 1999-UPFXD 1999-2017Additional Information OEM No.3693A UOM1 - KIT ManufacturerV-Twin OriginImported 2025 Catalog...$49.89 -
V-Twin - 37-0025 - Rocker Arm Shaft Plugs Allen Style
V-Twin
$30.87V-Twin - 37-0025 - Rocker Arm Shaft Plugs Allen StyleDescriptionAllen type rocker arm shaft plugs have a chrome finish and includes sockets and cups. Fits:FL 1971-1984FLT 1979-1983FX 1971-1984FXR 1982-1983XL 1971-1984Additional Information UOM4 - SET ...$30.87 -
V-Twin - 3351-4 - Rocker Arm Thrust Washer Kit
Colony Machine
$27.51V-Twin - 3351-4 - Rocker Arm Thrust Washer KitDescriptionRocker arm thrust washer kit is precision machine, heat treated construction. Fits:FL 1941-1947EL 1937-1940Additional Information OEM No.17465-36 UOM1 - KIT ManufacturerColony OriginUSA 2025...$27.51 -
V-Twin - 3307-4 - Knucklehead Intake and Exhaust Rocker Arm Cover Return Oil
Colony Machine
$26.65V-Twin - 3307-4 - Knucklehead Intake and Exhaust Rocker Arm Cover Return OilDescriptionSet of 4 nuts used on 1936-1947 Knucklehead rocker cover return lines. Fits:EL 1936-1940FL 1941-1947Additional Information UOM1 - SET ManufacturerColony OriginUSA ...$26.65 -
V-Twin - 3286-12 - Rocker Box Mounting Kit Parkerized
Colony Machine
$26.65V-Twin - 3286-12 - Rocker Box Mounting Kit ParkerizedDescriptionRocker box mounting kit includes stock replacement hex head bolts, machined from solid bar as original, and washers in a parkerized finish. Fits:EL 1936-1940FL 1941-1947Additional...$26.65 -
V-Twin - 3208-28 - Rocker Box Screw Kit Cadmium
Colony Machine
$57.70V-Twin - 3208-28 - Rocker Box Screw Kit CadmiumDescriptionCadmium plated rocker box screw kit includes bolts and washers. Fits:XL 1977-1985Additional Information UOM1 - KIT ManufacturerColony OriginUSA$57.70 -
V-Twin - 3207-28 - Rocker Box Screw Kit Cadmium
Colony Machine
$55.25V-Twin - 3207-28 - Rocker Box Screw Kit CadmiumDescriptionCadmium plated rocker box screw kit includes bolts and washers. Fits:XL 1957-1976Additional Information UOM1 - KIT ManufacturerColony OriginUSA$55.25 -
V-Twin - 3025-34 - Rocker Arm Cover Screw Kit Parkerized
Colony Machine
$19.88V-Twin - 3025-34 - Rocker Arm Cover Screw Kit ParkerizedDescriptionParkerized rocker arm cover hex head flat screw kit is the reproduction of screws used on 1938-1947 Knucklehead models.This is a 34 piece kit. Fits:EL 1939-1940FL 1941-1947Additional...$19.88 -
V-Twin - 3024-34 - Rocker Arm Cover Screw Kit Cadmium
Colony Machine
$19.88V-Twin - 3024-34 - Rocker Arm Cover Screw Kit CadmiumDescriptionCadmium rocker arm cover hex head flat screw kit is the reproduction of screws used on 1938-1947 Knucklehead models.This is a 34 piece kit. Fits:EL 1939-1940FL 1941-1947Additional...$19.88 -
V-Twin - 3023-34 - Rocker Arm Cover Screw Kit Chrome
Colony Machine
$22.50V-Twin - 3023-34 - Rocker Arm Cover Screw Kit ChromeDescriptionChrome rocker arm cover hex head phillips screw kit is the reproduction of screws used on 1938-1947 Knucklehead models.This is a 34 piece kit. Fits:EL 1939-1940FL 1941-1947Additional...$22.50 -
V-Twin - 2955-34 - Rocker Arm Cover Screw Kit Parkerized
Colony Machine
$58.43V-Twin - 2955-34 - Rocker Arm Cover Screw Kit ParkerizedDescriptionRocker arm cover fillister head slotted parkerized screw kit for 1938 61" overhead valve models is the reproduction of screws used on 1938-1947 Knucklehead models.This is a 34 piece kit...$58.43 -
V-Twin - 2850-24 - Panhead Valve Cover Screws Cadmium
Colony Machine
$28.98V-Twin - 2850-24 - Panhead Valve Cover Screws CadmiumDescriptionPanhead valve cover screws feature a cadmium finish and are used on valve covers without d-rings.48 piece set includes 18 round head phillips screws, 6 allen screws and 24 lock washers...$28.98 -
V-Twin - 2078-18 - Lower Rocker Arm Cover Mount Kit
Colony Machine
$31.45V-Twin - 2078-18 - Lower Rocker Arm Cover Mount KitDescriptionLower rocker arm cover mount kit. Fits:FXST 1984-1998FLT 1984-1998FXD 1991-1998FXR 1984-1994FLST 1986-1998Additional Information UOM1 - KIT ManufacturerColony OriginUSA 2025 Catalog Pages37$31.45 -
V-Twin - 2020-8 - Rocker Arm Slotted Cadmium Cover Plug Kit
Colony Machine
$41.51V-Twin - 2020-8 - Rocker Arm Slotted Cadmium Cover Plug KitDescriptionSlotted type rocker arm cover plug kit with a cadmium finish . Features a 1/2" - 20 thread to be used on later type rocker shafts. Fits:FL 1971-1984FLT 1979-1983FX 1971-1984FXR...$41.51 -
V-Twin - 2019-8 - Rocker Arm Slotted Chrome Cover Plug Kit
Colony Machine
$48.25V-Twin - 2019-8 - Rocker Arm Slotted Chrome Cover Plug KitDescriptionSlotted type rocker arm cover plug kit with a chrome finish. Features a 1/2" - 20 thread to be used on later type rocker shafts. Fits:FL 1971-1984FLT 1979-1983FX 1971-1984FXR...$48.25 -
V-Twin - 2016-6 - D-Ring Cadmium Rocker Arm Cover Screw Set
Colony Machine
$22.60V-Twin - 2016-6 - D-Ring Cadmium Rocker Arm Cover Screw SetDescriptionCadmium rocker arm cover screw set for steel D-ring. Screws have a 1/4" - 20 thread. Fits:FL 1948-1965Additional Information UOM6 - SET ManufacturerColony OriginUSA 2025 Catalog...$22.60 -
V-Twin - 2015-6 - D-Ring Chrome Rocker Arm Cover Screw Set
Colony Machine
$25.65V-Twin - 2015-6 - D-Ring Chrome Rocker Arm Cover Screw SetDescriptionChrome rocker arm cover screw set for steel D-ring. Screws have a 1/4" - 20 thread. Fits:FL 1948-1965Additional Information UOM6 - SET ManufacturerColony OriginUSA 2025 Catalog...$25.65 -
V-Twin - 2014-6 - D-Ring Cadmium Rocker Arm Cover Screw Set
Colony Machine
$22.60V-Twin - 2014-6 - D-Ring Cadmium Rocker Arm Cover Screw SetDescriptionCadmium rocker arm cover screw set for alloy D-ring. Screws have a 1/4" - 20 thread. Fits:FL 1948-1965Additional Information UOM6 - SET ManufacturerColony OriginUSA 2025 Catalog...$22.60 -
V-Twin - 2013-6 - D-Ring Chrome Rocker Arm Cover Screw Set
Colony Machine
$25.65V-Twin - 2013-6 - D-Ring Chrome Rocker Arm Cover Screw SetDescriptionChrome rocker arm cover screw set for alloy D-ring. Screws have a 1/4" - 20 thread. Fits:FL 1948-1965Additional Information UOM6 - SET ManufacturerColony OriginUSA 2025 Catalog...$25.65 -
V-Twin - 13-9206 - Valve Spring Kit
Eastern
$79.67V-Twin - 13-9206 - Valve Spring KitDescriptionValve spring kit includes springs, collars and keepers. Fits:K 1954-1956Additional Information UOM1 - KIT ManufacturerEastern OriginUSA 2025 Catalog Pages820$79.67 -
V-Twin - 13-9205 - Valve Spring Kit
Eastern
$79.67V-Twin - 13-9205 - Valve Spring KitDescriptionValve spring set includes springs, collars and keepers for K models. Fits:K 1952-1953Additional Information UOM1 - KIT ManufacturerEastern OriginUSA 2025 Catalog Pages820$79.67 -
V-Twin - 13-0222 - Valve Spring Set
Eastern
$53.22V-Twin - 13-0222 - Valve Spring SetDescriptionValve spring set for K models.Set of four. Fits:K 1954-1956Additional Information OEM No.18200-32 UOM1 - SET ManufacturerEastern OriginUSA 2025 Catalog Pages820$53.22 -
V-Twin - 13-0221 - Valve Spring Set
Eastern
$54.88V-Twin - 13-0221 - Valve Spring SetDescriptionValve spring set for K models.Set of four. Fits:K 1952-1953Additional Information OEM No.18201-52 UOM1 - SET ManufacturerEastern OriginUSA 2025 Catalog Pages820$54.88 -
V-Twin - 13-0100 - Rocker Arm Springs
Eastern
$22.54V-Twin - 13-0100 - Rocker Arm SpringsDescriptionRocker arm springs is a OEM replacement. Fits:XL 1957-1985Additional Information OEM No.17483-57 UOM10 - PK ManufacturerEastern OriginUSA 2025 Catalog Pages848$22.54 -
V-Twin - 12-8955 - Replica Red Rocker Arm Nut Set Zinc Plated
Motorshop
$18.74V-Twin - 12-8955 - Replica Red Rocker Arm Nut Set Zinc Plated Description Replica rocker arm nut set has a thread size of 7/16 x 20. These hex nuts with red tops are zinc plated.Sold as a set of 4. Fits: FX 1971-1984 FXR 1982-1983 FL...$18.74 -
V-Twin - 12-2524 - Rocker Box Cover Stud Kit
Motorshop
$29.51V-Twin - 12-2524 - Rocker Box Cover Stud Kit Description Sifton rocker box cover stud kit for 1 head. Fits: FLT 1979-1983 FX 1971-1984 FXR 1982-1983 FL 1966-1984 Additional Information OEM No. 17506-66 UOM 1 -...$29.51 -
V-Twin - 12-2122 - Rocker Arm Shim
Eastern
$16.58V-Twin - 12-2122 - Rocker Arm Shim Description Rocker arm shim 10 pack. Fits: FLT 1979-1983 FX 1971-1984 FXR 1982-1983 FL 1966-1984 Additional Information OEM No. 17450-73 UOM 10 - PK Measurements Additional...$16.58 -
V-Twin - 12-2116 - Rocker Arm Spacer
Eastern
$20.48V-Twin - 12-2116 - Rocker Arm Spacer Description Used in between each pair of rocker arms these spacers are sold in a pack of 10. Fits: XL 1957-1983 Additional Information OEM No. 17451-57 UOM 10 -...$20.48 -
V-Twin - 12-2115 - Rocker Arm Spacer
Motorshop
$23.88V-Twin - 12-2115 - Rocker Arm Spacer Description Used in between each pair of rocker arms these spacers are sold in a pack of 4. Fits: FLT 1979-1983 FX 1971-1984 FXR 1982-1983 FL 1966-1984 Additional Information OEM No...$23.88 -
V-Twin - 12-2114 - Rocker Arm Stud Set
Motorshop
$33.62V-Twin - 12-2114 - Rocker Arm Stud Set Description Replica Panhead rocker arm eight piece stud set. Fits: FL 1948-1965 Additional Information OEM No. 17647-48 UOM 8 - PK Manufacturer Motorshop Origin Imported 2025...$33.62 -
V-Twin - 12-2106 - Rocker Box Cover Zinc Finish Stud Set
Motorshop
$39.62V-Twin - 12-2106 - Rocker Box Cover Zinc Finish Stud Set Description Rocker box stud set for one head. Fits: FLT 1979-1983 FX 1971-1984 FXR 1982-1983 FL 1966-1984 Additional Information OEM No. 17506-66 UOM 1 -...$39.62 -
V-Twin - 12-1966 - Satin Rocker Arm Shaft End Caps
Motorshop
$8.62V-Twin - 12-1966 - Satin Rocker Arm Shaft End Caps Description Rocker shaft end caps are 7/16" X 20 thread pitch with a brushed nickel finish.Sold as a set of 4. Fits: FX 1971-1984 FXR 1982-1983 FL 1966-1984 XL 1957-1985 FLT...$8.62 -
V-Twin - 12-1764 - OE Rocker Arm Bushing
OE
$14.60V-Twin - 12-1764 - OE Rocker Arm BushingDescriptionOE rocker arm bushing. Fits:XL 1986-2021Additional Information OEM No.11000127 UOM1 - EA ManufacturerOE OriginUSA 2025 Catalog Pages173$14.60 -
V-Twin - 12-1193 - Rocker Arm End Shaft Washer
Eastern
$13.88V-Twin - 12-1193 - Rocker Arm End Shaft WasherDescriptionReplica zinc plated rocker end shaft washers measure 13/32 x 5/8 x 1/32Washers are for use on left side of Shovelhead rocker boxes. Sold in a pack of 25. Fits:FLT 1979-1983FX 1971-1984FXR...$13.88 -
V-Twin - 12-0730 - Rocker Arm Shaft Brass Washer
Motorshop
$37.94V-Twin - 12-0730 - Rocker Arm Shaft Brass WasherDescriptionKnucklehead rocker arm shaft brass washer measures 7/16" x 3/16" x 1/16".NOTE: The thickness is .035-.038". Fits:FL 1941-1947EL 1937-1940Additional Information OEM No.6475 UOM10 - PK ...$37.94 -
V-Twin - 12-0715 - .015 Rocker Arm Shim
Eastern
$18.34V-Twin - 12-0715 - .015 Rocker Arm ShimDescriptionRocker Arm Shim .015 Fits:FLT 1979-1983FX 1971-1984FXR 1982-1983FL 1966-1984XL 1957-1985Additional Information UOM10 - PK ManufacturerEastern OriginUSA 2025 Catalog Pages512$18.34 -
V-Twin - 12-0710 - .007 Rocker Arm Shim
V-Twin Manufacturing
$19.34V-Twin - 12-0710 - .007 Rocker Arm ShimDescriptionRocker Arm Shim, .007 for 1966-1984 Big Twin, 1957-1984 XL Fits:FLT 1979-1983FX 1971-1984FXR 1982-1983FL 1966-1984XL 1957-1985Additional Information OEM No.6767 UOM10 - PK ManufacturerV-Twin OriginUSA...$19.34 -
V-Twin - 12-0704 - .005 Rocker Arm Shims
V-Twin Manufacturing
$19.18V-Twin - 12-0704 - .005 Rocker Arm ShimsDescriptionRocker arm shim .005 for 1966-1984 Big Twin and 1957-1984 Sportster Fits:FLT 1979-1983FX 1971-1984FXR 1982-1983FL 1966-1984XL 1957-1985Additional Information OEM No.6767 UOM10 - PK ...$19.18 -
V-Twin - 12-0571 - Flexloc Nut for Rocker Arm Stud Cadmium
Motorshop
$34.30V-Twin - 12-0571 - Flexloc Nut for Rocker Arm Stud CadmiumDescriptionReplica rocker arm stud flex jam nuts are all metal, are cadmium plated, and are 5/16-24. Fits:FL 1948-1965Additional Information OEM No.7727 UOM10 - PK ManufacturerMotorshop ...$34.30
Harley Rockers & Rocker Boxes
Crafted from high-strength forged steel or billet aluminum, our Harley rocker arms and rocker boxes are built to handle the demands of high-RPM engines and heavy-duty riding. Enhanced oil flow channels improve lubrication and cooling, while reducing valvetrain noise and increasing engine response.
Designed to exceed OEM standards, our rockers and rocker boxes fit a wide range of Harley-Davidson models and are easy to install—making them ideal for both custom builds and restorations.
Give your V-twin the upgrade it deserves. Shop our collection of Harley rockers and rocker boxes today and boost both performance and reliability.