Cylinder Heads
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S&S Cycle - Compression Release Hole Plug
S&S Cycle
$24.95S&S Cycle - Compression Release Hole Plug Features: Not for use on OEM heads Made in the U.S.A. Fitment 2016-2017 Harley-Davidson Fat Boy S FLSTFBS - - 2016-2017 Harley-Davidson Softail Slim S...$24.95 -
S&S Cycle - Valve Spring Kit fits '48-'84 Big Twin Models
S&S Cycle
$248.95S&S Cycle - Valve Spring Kit fits '48-'84 Big Twin Models Features: To be used with cams with up to .550" lift Includes springs and aluminum top retainers 140-lb. seat pressure Must allow additional rocker clearance for 48-65 Panheads Made in...$248.95 -
Colony - 9211-16 Chrome Headbolt Kit fits '73-'85 Sportster Models
Colony Machine
MSRP: $65.92$64.07Colony - 9211-16 Chrome Headbolt Kit fits '73-'85 Sportster Models Chrome headbolt kit. Fitment: XL 1973-1985 Measurements: End to End: 3-7/8"MSRP: $65.92$64.07 -
Colony - 9641-16 Cadmium Headbolt Kit fits '52-'56 K Model
Colony Machine
MSRP: $111.38$104.98Colony - 9641-16 Cadmium Headbolt Kit fits '52-'56 K Model Cadmium headbolt kit without washers Fitment: K 1952-1956MSRP: $111.38$104.98 -
Colony - 9643-16 Cadmium Headbolt Kit fits '54-'56 K Model
Colony Machine
MSRP: $111.38$104.98Colony - 9643-16 Cadmium Headbolt Kit fits '54-'56 K Model Cadmium headbolt kit without washers. Fitment: K 1954-1956MSRP: $111.38$104.98 -
Colony - 9649-5 Speedometer Cable Clamp fits '39-'48 UL Model (OEM #67086-39)
Colony Machine
MSRP: $20.80$17.68Colony - 9649-5 Speedometer Cable Clamp fits '39-'48 UL Model (OEM #67086-39) Speedometer Cable Clamp Fitment: UL 1939-1948MSRP: $20.80$17.68 -
Colony - 9650-1 Speedometer Cable Clamp fits '52-'56 FL Model (OEM #67075-52)
Colony Machine
MSRP: $16.98$15.28Colony - 9650-1 Speedometer Cable Clamp fits '52-'56 FL Model (OEM #67075-52) Speedometer Cable Clamp Fitment: FL 1952-1956MSRP: $16.98$15.28 -
Colony - 12-1804 45" Head Stud Washer Set fits '29-'35 DL Model (OEM #6395)
Colony Machine
MSRP: $36.96$32.93Colony - 12-1804 45" Head Stud Washer Set fits '29-'35 DL Model (OEM #6395) 45" head stud washer set measures 3/8" x 13/16" x 1/16". Sold as a 14 piece set Fitment: DL 1929-1935MSRP: $36.96$32.93 -
Colony - 3515-4 Cylinder Head Bolt Spacers fits '52-'53 K Model (OEM #6860-52)
Colony Machine
$50.73Colony - 3515-4 Cylinder Head Bolt Spacers fits '52-'53 K Model (OEM #6860-52) Cadmium plated cylinder head bolt machined spacers fit between cylinder heads and motor mount. Sold as a 4 piece set Fitment: K 1952-1953 Measurements: Height:...$50.73 -
Colony - 3516-4 Cylinder Head Bolt Spacers fits '54-'56 KH Model (OEM #16860-54)
Colony Machine
MSRP: $39.02$34.76Colony - 3516-4 Cylinder Head Bolt Spacers fits '54-'56 KH Model (OEM #16860-54) Cadmium plated cylinder head bolt machined spacers fit between cylinder heads and motor mount. Sold as a set of 4 Fitment: KH 1954-1956 Measurements: Height:...MSRP: $39.02$34.76 -
Colony - 9704-10 Parkerized Cylinder Headbolt Washer Set fits '71-'84 FX, '48-'84 FL Models
Colony Machine
MSRP: $22.60$19.21Colony - 9704-10 Parkerized Cylinder Headbolt Washer Set fits '71-'84 FX, '48-'84 FL Models Cylinder headbolt washer set with a parkerized finish Fitment: FX 1971-1984 FL 1948-1984MSRP: $22.60$19.21 -
Colony - 9705-18-45 Parkerized Headbolt Kit fits '29-'52 WL, '29-'73 G Models
Colony Machine
MSRP: $94.95$89.49Colony - 9705-18-45 Parkerized Headbolt Kit fits '29-'52 WL, '29-'73 G Models Parkerized headbolt kit with aluminum heads. Order washers separately Fitment: WL 1929-1952 G 1929-1973MSRP: $94.95$89.49 -
Colony - 9748-16 Allen Type Headbolt Kit fits '73-'85 Sportster Models
Colony Machine
MSRP: $58.35$56.71Colony - 9748-16 Allen Type Headbolt Kit fits '73-'85 Sportster Models Allen type headbolt kit. Fitment: XL 1973-1985MSRP: $58.35$56.71 -
Colony - 9759-4 Allen Type Tappet Block Screw Kit fits '91-'94 Sportster Models
Colony Machine
MSRP: $13.86$12.47Colony - 9759-4 Allen Type Tappet Block Screw Kit fits '91-'94 Sportster Models Tappet block allen type screw kit. Fitment: XL 1991-1994MSRP: $13.86$12.47 -
Colony - 9761-4 Kick Starter Trip Bolt and Nut Kit fits '41-'52 WL, '41-'63 G Models (OEM #33456-26)
Colony Machine
MSRP: $30.85$28.84Colony - 9761-4 Kick Starter Trip Bolt and Nut Kit fits '41-'52 WL, '41-'63 G Models (OEM #33456-26) Trip bolt and nut kit for kick starter on side valve models Fitment: WL 1941-1952 G 1941-1963 Measurements: Length: 1-1/16" Thread: 1/4"-24MSRP: $30.85$28.84 -
Colony - 9889-16 Cadmium Headbolt Kit fits '51-'73 G, '51-'52 WL Models (OEM #16809-40)
Colony Machine
MSRP: $93.35$87.98Colony - 9889-16 Cadmium Headbolt Kit fits '51-'73 G, '51-'52 WL Models (OEM #16809-40) Cadmium headbolt kit, stock for side valve models Fitment: G 1951-1973 WL 1951-1952MSRP: $93.35$87.98 -
V-Twin - Cylinder Head Set with Chrome Rocker Box fits '78-'84 FL/FX Models
V-Twin Mfg
$2,277.89V-Twin - Cylinder Head Set with Chrome Rocker Box fits '78-'84 FL/FX Models Set is assembled with cast iron guides, valve stem seals, chrome rocker box and nitrated valves. For use on 74" or 80" models with Shovelhead barrels Fitment: FL 1978-1984 FX...$2,277.89 -
Colony - 7711-18 Cadmium Cylinder Headbolt fits '31-'36 V, '37-'48 U Models
Colony Machine
MSRP: $104.92$98.89Colony - 7711-18 Cadmium Cylinder Headbolt fits '31-'36 V, '37-'48 U Models Cadmium cylinder headbolt for use on 74" and 80" Side Valve motors with aluminum heads Fitment: V 1931-1936 U 1937-1948MSRP: $104.92$98.89 -
Colony - 7711-18-45 Cadmium Headbolt fits '29-'52 WL, '29-'73 G Models
Colony Machine
MSRP: $95.71$90.20Colony - 7711-18-45 Cadmium Headbolt fits '29-'52 WL, '29-'73 G Models Cadmium headbolt, stock with aluminum heads for 45" side valve models Order washers separately Fitment: WL 1929-1952 G 1929-1973MSRP: $95.71$90.20 -
Colony - 7712-36 Cadmium Headbolt fits '29-'52 WL, '29-'73 G Models
Colony Machine
MSRP: $103.43$97.48Colony - 7712-36 Cadmium Headbolt fits '29-'52 WL, '29-'73 G Models Cadmium headbolt for side valve models. Fitment: WL 1929-1952 G 1929-1973MSRP: $103.43$97.48 -
Colony - 7713-20 Cadmium Stock 61" Cylinder Head Bolt fits '36-'39 EL Model
Colony Machine
MSRP: $75.40$67.86Colony - 7713-20 Cadmium Stock 61" Cylinder Head Bolt fits '36-'39 EL Model Cadmium 61" cylinder head bolt Fitment: EL 1936-1939MSRP: $75.40$67.86 -
Colony - 7714-20 Cadmium Stock Cylinder Head Bolt fits '40-'47 FL Model
Colony Machine
MSRP: $75.28$67.75Colony - 7714-20 Cadmium Stock Cylinder Head Bolt fits '40-'47 FL Model Cadmium stock cylinder head bolt Fitment: FL 1940-1947MSRP: $75.28$67.75 -
Colony - Head Bolt Kit fits '48-'84 Big Twin Models (OEM #16814-40, 6469)
Colony Machine
$85.95Colony - Head Bolt Kit fits '48-'84 Big Twin Models (OEM #16814-40, 6469) Features: Hardened to OEM specifications to prevent stretching Made in the U.S.A. Fitment 1977 Harley-Davidson 1200 Low Rider...$85.95 -
S&S Cycle - Retro Top-End Conversion Kit for 3.625" Bore Cylinders fits '66-'84 Shovelhead Engines
S&S Cycle
$4,499.95S&S Cycle - Retro Top-End Conversion Kit for 3.625" Bore Cylinders fits '66-'84 Shovelhead Engines Your Shovelhead will achieve the ultimate blast-from-the-past appearance of a Panhead with this Retro Top-End Conversion Kit from S&S Cycle! It...$4,499.95 -
S&S Cycle - Super Stock™ '66-'78 Cylinder Heads - fits 3-5/8" Bore Cylinders
S&S Cycle
MSRP: $1,899.95$1,895.95S&S Cycle - Super Stock™ '66-'78 Cylinder Heads - fits 3-5/8" Bore Cylinders Features: Heads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars and valve keepers Complete kits also include...MSRP: $1,899.95$1,895.95 -
S&S Cycle - Wrinkle Black Powdercoat 91cc Super Stock™ Cylinder Heads fits '06-'17 Twin Cam Models (Exc. Twin Cooled Motors)
S&S Cycle
$1,795.95S&S Cycle - Wrinkle Black Powdercoat 91cc Super Stock™ Cylinder Heads fits '06-'17 Twin Cam Models (Exc. Twin Cooled Motors) S&S Cycle's 91cc Super Stock™ Cylinder Heads' high port flow creates excellent performance after initial...$1,795.95 -
S&S Cycle - Silver Powdercoat 79cc Super Stock™ Cylinder Heads fits '99-'05 Twin Cam Models
S&S Cycle
$2,149.95S&S Cycle - Silver Powdercoat 79cc Super Stock™ Cylinder Heads fits '99-'05 Twin Cam Models S&S Cycle's 79cc Super Stock™ Cylinder Heads' high port flow creates excellent performance after initial installation, and even greater...$2,149.95 -
S&S Cycle - Wrinkle Black Powdercoat 79cc Super Stock™ Cylinder Heads fits '06-'17 Twin Cam Models (Exc. Twin Cooled Motors)
S&S Cycle
$1,995.95S&S Cycle - Wrinkle Black Powdercoat 79cc Super Stock™ Cylinder Heads fits '06-'17 Twin Cam Models (Exc. Twin Cooled Motors) S&S Cycle's 79cc Super Stock™ Cylinder Heads' high port flow creates excellent performance after initial...$1,995.95 -
S&S Cycle - Wrinkle Black Powdercoat 89cc Super Stock™ Cylinder Heads fits '06-'17 Twin Cam Models (Exc. Twin Cooled Motors)
S&S Cycle
$1,995.95S&S Cycle - Wrinkle Black Powdercoat 89cc Super Stock™ Cylinder Heads fits '06-'17 Twin Cam Models (Exc. Twin Cooled Motors) S&S Cycle's 89cc Super Stock™ Cylinder Heads' high port flow creates excellent performance after initial...$1,995.95 -
S&S Cycle - Super Stock™ Single Spark Plug Cylinder Heads - fits '79-'84 (Rubber Band Intake) 3 ⅜" Bore Cylinders
S&S Cycle
$1,895.95S&S Cycle - Super Stock™ Single Spark Plug Cylinder Heads - fits '79-'84 (Rubber Band Intake) 3 ⅜" Bore Cylinders Heads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars and valve...$1,895.95 -
S&S Cycle - Wrinkle Black Powdercoat 79cc Super Stock™ Cylinder Heads fits '99-'05 Twin Cam Models (.585" Lift)
S&S Cycle
$1,795.95S&S Cycle - Wrinkle Black Powdercoat 79cc Super Stock™ Cylinder Heads fits '99-'05 Twin Cam Models (.585" Lift) S&S Cycle's 79cc Super Stock™ Cylinder Heads' high port flow creates excellent performance after initial installation,...$1,795.95 -
S&S Cycle - 76cc High Compression Performance Cylinder Heads fits '84-'99 Evolution Big Twin Models - Black Powdercoat
S&S Cycle
$1,553.95S&S Cycle - 76cc High Compression Performance Cylinder Heads fits '84-'99 Evolution Big Twin Models - Black Powdercoat Great news: S&S heads are now available to be used with stock-style flat-top pistons! The kits are fully assembled and come...$1,553.95 -
Colony - 9212-16 Cadmium Headbolt Kit fits '73-'85 Sportster Models
Colony Machine
MSRP: $52.70$51.22Colony - 9212-16 Cadmium Headbolt Kit fits '73-'85 Sportster Models Headbolt kit with a cadmium finish. Fitment: XL 1973-1985MSRP: $52.70$51.22 -
S&S Cycle - Silver Powdercoat 79cc Super Stock™ Cylinder Heads fits '06-'17 Twin Cam Models (Exc. Twin Cooled Motors)
S&S Cycle
MSRP: $2,149.95$1,995.95S&S Cycle - Silver Powdercoat 79cc Super Stock™ Cylinder Heads fits '06-'17 Twin Cam Models (Exc. Twin Cooled Motors) S&S Cycle's 79cc Super Stock™ Cylinder Heads' high port flow creates excellent performance after initial...MSRP: $2,149.95$1,995.95 -
Out of stock
V-Twin - 42-1158 - Head Bolt and Spark Plug Cover Kit Chrome
V-Twin Mfg
MSRP: $56.55$54.96V-Twin - 42-1158 - Head Bolt and Spark Plug Cover Kit ChromeDescriptionChrome cylinder head bolt and spark plug cover kit. Fits:XL 2004-UPAdditional Information OEM No.44432-04 UOM1 - KIT ManufacturerV-Twin OriginImported 2025 Catalog Pages854MSRP: $56.55$54.96 -
Out of stock
V-Twin - 11-2000 - Chrome Intake Valve
Crane
$9.86V-Twin - 11-2000 - Chrome Intake Valve Description Crane chrome intake valve Fits: FLT 1979-1983 FX 1971-1984 FXR 1982-1983 FL 1966-1984 Additional Information OEM No. 18074-66 UOM 1 -...$9.86 -
Out of stock
V-Twin - 11-1886 - Ampco 45 .004 Intake Valve Guide
Rowe
$10.67V-Twin - 11-1886 - Ampco 45 .004 Intake Valve GuideDescriptionRowe .004 intake valve guide is made of ampco 45 Fits:FX 1979-1984FLT 1979-1983FXR 1982-1983FL 1979-1984Additional Information UOM1 - EA ManufacturerRowe MaterialAmpco 45 OriginUSA Size...$10.67 -
Out of stock
V-Twin - 10-1957 - Panhead Cylinder Head Set with Valves
Motorshop
$1,430.38V-Twin - 10-1957 - Panhead Cylinder Head Set with Valves Description Cylinder heads are fully assembled with valves, springs and collars.V-Twin Motor Shop Ready Panheads with valves feature original contour castings with the added detail of the stock...$1,430.38 -
Out of stock
Kpmi - 20-4257 - Black Diamond Intake Valve Hd Panhead 48-65
KPMI
$30.95Kpmi - 20-4257 - Black Diamond Intake Valve Hd Panhead 48-65FeaturesAll KPMI Black Diamond® stainless steel valves are impregnated by a special German process to a depth of .002”, with a surface build up of .0002”. This “Black Diamond®” process improves...$30.95 -
Out of stock
Kpmi - 20-4196 - Black Diamond Intake Valve Hd Sportster 70-83
KPMI
$37.55Kpmi - 20-4196 - Black Diamond Intake Valve Hd Sportster 70-83FeaturesAll KPMI Black Diamond® stainless steel valves are impregnated by a special German process to a depth of .002”, with a surface build up of .0002”. This “Black Diamond®” process...$37.55
Harley Cylinder Heads
Harley cylinder heads are key to unlocking better combustion, more horsepower, and crisper throttle response. Whether you're rebuilding a vintage ride or dialing in your current setup, the right heads can completely transform your V-twin—bringing out that iconic Harley sound and strong, reliable torque.
At Deadbeat Customs, we carry Harley cylinder heads from top brands like S&S. These heads are made from premium aluminum and feature CNC-machined combustion chambers, multi-angle valve seats, and high-performance valve springs. Upgrade your motor with Harley cylinder heads that run cooler, last longer, and hit harder. Check out the collection and take your build to the next level.