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On Sale
S&S Cycle - Silver 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines
S&S Cycle
MSRP: $1,449.95Now: $1,435.46Was: $1,594.95S&S Cycle - Silver 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines This Big Bore Kit has a 10.5:1 compression ratio (W/ stock 85cc heads) that will transform your engine into a street-ready and reliable machine which will...MSRP: $1,449.95Now: $1,435.46Was: $1,594.95 -
On Sale
S&S Cycle - Wrinkle Black 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines
S&S Cycle
MSRP: $1,409.95Now: $1,395.86Was: $1,550.95S&S Cycle - Wrinkle Black 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines This Big Bore Kit has a 10.5:1 compression ratio (W/ stock 85cc heads) that will transform your engine into a street-ready and reliable machine...MSRP: $1,409.95Now: $1,395.86Was: $1,550.95 -
On Sale
S&S Cycle - Silver 110" Bolt-In Sidewinder® 4" Big Bore Kit fits '07-'17 Twin Cam Engines
S&S Cycle
MSRP: $1,449.95Now: $1,211.36Was: $1,345.95S&S Cycle - Silver 110" Bolt-In Sidewinder® 4" Big Bore Kit fits '07-'17 Twin Cam Engines This Big Bore Kit has a 10.5:1 compression ratio (W/ stock 85cc heads) that will transform your engine into a street-ready and reliable machine which will...MSRP: $1,449.95Now: $1,211.36Was: $1,345.95 -
On Sale
S&S Cycle - Wrinkle Black 124" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'21 107" M8 Engines
S&S Cycle
Now: $1,436.36Was: $1,595.95S&S Cycle - Wrinkle Black 124" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'21 107" M8 Engines This is a bolt-on kit that features the biggest bore possible with no machining of the crankcases necessary! It includes all of the required...Now: $1,436.36Was: $1,595.95 -
On Sale
S&S Cycle - Wrinke Black 128" Big Bore Kit W/O Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines
S&S Cycle
Now: $1,405.76Was: $1,561.95S&S Cycle - Wrinke Black 128" Big Bore Kit W/O Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines This is a bolt-on kit that features the biggest cylinder bore possible with no machining of the crankcases necessary! It includes all of the...Now: $1,405.76Was: $1,561.95 -
On Sale
S&S Cycle - Wrinke Black 128" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines
S&S Cycle
Now: $1,436.36Was: $1,595.95S&S Cycle - Wrinke Black 128" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines This is a bolt-on kit that features the biggest cylinder bore possible with no machining of the crankcases necessary! It includes all of the...Now: $1,436.36Was: $1,595.95 -
On Sale
S&S Cycle - Wrinkle Black 4¼" Bore M8 Cylinders W/O Highlighted Cylinder Fins fits '17-'20 M8 Engines
S&S Cycle
MSRP: $929.95Now: $854.06Was: $948.95S&S Cycle - Wrinkle Black 4¼" Bore M8 Cylinders W/O Highlighted Cylinder Fins fits '17-'20 M8 Engines These cylinders are bored slightly under nominal size and are not honed. Features Bolt on Cylinder Set For M8 Models Sold in...MSRP: $929.95Now: $854.06Was: $948.95 -
On Sale
S&S Cycle - Wrinkle Black 4¼" Bore M8 Cylinders W/ Highlighted Cylinder Fins fits '17-'20 M8 Engines
S&S Cycle
MSRP: $929.95Now: $854.06Was: $948.95S&S Cycle - Wrinkle Black 4¼" Bore M8 Cylinders W/ Highlighted Cylinder Fins fits '17-'20 M8 Engines These cylinders are bored slightly under nominal size and are not honed. Features Bolt on Cylinder Set For M8 Models Sold in...MSRP: $929.95Now: $854.06Was: $948.95 -
On Sale
S&S Cycle - Black Granite 128" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines
S&S Cycle
Now: $1,403.96Was: $1,559.95S&S Cycle - Black Granite 128" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines This is a bolt-on kit that features the biggest cylinder bore possible with no machining of the crankcases necessary! It includes all of the...Now: $1,403.96Was: $1,559.95 -
On Sale
S&S Cycle - Black Granite 4¼" Bore M8 Cylinders W/ Highlighted Cylinder Fins fits '17-'20 M8 Engines
S&S Cycle
MSRP: $929.95Now: $854.06Was: $948.95S&S Cycle - Black Granite 4¼" Bore M8 Cylinders W/ Highlighted Cylinder Fins fits '17-'20 M8 Engines These cylinders are bored slightly under nominal size and are not honed. Features Bolt on Cylinder Set For M8 Models Sold in...MSRP: $929.95Now: $854.06Was: $948.95 -
On Sale
S&S Cycle - Wrinkle Black 131" Stroker Cylinder & Piston Kit W/ Highlighted Cylinder Fins fits '17-'21 M8 Engines
S&S Cycle
MSRP: $1,509.95Now: $1,403.96Was: $1,559.95S&S Cycle - Wrinkle Black 131" Stroker Cylinder & Piston Kit W/ Highlighted Cylinder Fins fits '17-'21 M8 Engines S&S Cycle's Stroker Cylinder & Piston Kit is a bolt-on kit that is compatible with the stock crankcases and features...MSRP: $1,509.95Now: $1,403.96Was: $1,559.95 -
On Sale
S&S Cycle - Black/Highlighted 4.375" Stroke 129" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines
S&S Cycle
MSRP: $1,499.95Now: $1,436.36Was: $1,595.95S&S Cycle - Black/Highlighted 4.375" Stroke 129" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines S&S Cycle's Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320") that, in turn, delivers a huge power...MSRP: $1,499.95Now: $1,436.36Was: $1,595.95 -
On Sale
S&S Cycle - Black 4.375" Stroke 129" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines
S&S Cycle
MSRP: $1,499.95Now: $1,439.96Was: $1,599.95S&S Cycle - Black 4.375" Stroke 129" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines S&S Cycle's Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320") that, in turn, delivers a huge power increase! It is...MSRP: $1,499.95Now: $1,439.96Was: $1,599.95 -
On Sale
S&S Cycle - Black/Highlighted 4.5" Stroke 132" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines
S&S Cycle
MSRP: $1,499.95Now: $1,484.96Was: $1,649.95S&S Cycle - Black/Highlighted 4.5" Stroke 132" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines S&S Cycle's Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320") that, in turn, delivers a huge power...MSRP: $1,499.95Now: $1,484.96Was: $1,649.95 -
On Sale
S&S Cycle - Black 4.5" Stroke 132" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines
S&S Cycle
MSRP: $1,499.95Now: $1,439.96Was: $1,599.95S&S Cycle - Black 4.5" Stroke 132" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines S&S Cycle's Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320") that, in turn, delivers a huge power increase! It is...MSRP: $1,499.95Now: $1,439.96Was: $1,599.95 -
On Sale
S&S Cycle - Natural Finish Evolution-Style Aluminum Cylinders fits '84-'99 Evolution Big Twin Engines
S&S Cycle
MSRP: $799.95Now: $734.36Was: $815.95S&S Cycle - Natural Finish Evolution-Style Aluminum Cylinders fits '84-'99 Evolution Big Twin Engines S&S Cycle's Evolution-Style Aluminum Cylinders are stock replacement cylinders featuring a 3½" bore with a cast-iron liner. Its finish...MSRP: $799.95Now: $734.36Was: $815.95 -
On Sale
S&S Cycle - Silver XL883 to 1200 Conversion Kit fits '86-'20 XL 883 Models
S&S Cycle
MSRP: $1,102.95Now: $986.36Was: $1,095.95S&S Cycle - Silver XL883 to 1200 Conversion Kit fits '86-'20 XL 883 Models This conversion kit installs in no time at all since the pistons are already fit to the cylinders, making them prepared for assembly as soon as you open them! The kits are...MSRP: $1,102.95Now: $986.36Was: $1,095.95 -
On Sale
S&S Cycle - 4⅛" Bore Cylinders fits '99-'06 Twin Cam Engines W/ 124" Hot Set Up Kits
S&S Cycle
MSRP: $879.95Now: $808.16Was: $897.95S&S Cycle - 4⅛" Bore Cylinders fits '99-'06 Twin Cam Engines W/ 124" Hot Set Up Kits These Bore Cylinders are built for 124" Hot Set Up Kits utilized in '99-'17 Twin Cam models and are bored slightly under the normal size and are not honed. NOTE:...MSRP: $879.95Now: $808.16Was: $897.95 -
On Sale
S&S Cycle - Black Powdercoat Evolution-Style Aluminum Cylinders W/ Machined Fin Edges fits '84-'99 Evolution Big Twin Engines
S&S Cycle
MSRP: $799.95Now: $734.36Was: $815.95S&S Cycle - Black Powdercoat Evolution-Style Aluminum Cylinders W/ Machined Fin Edges fits '84-'99 Evolution Big Twin Engines S&S Cycle's Evolution-Style Aluminum Cylinders are stock replacement cylinders featuring a 3½" bore with a...MSRP: $799.95Now: $734.36Was: $815.95 -
On Sale
S&S Cycle - Retro Top-End Conversion Kit for 3.625" Bore Cylinders fits '66-'84 Shovelhead Engines
S&S Cycle
Now: $4,049.96Was: $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...Now: $4,049.96Was: $4,499.95 -
On Sale
S&S Cycle - Retro Top-End Conversion Kit for Stock Bore Cylinders fits '66-'84 Shovelhead Engines
S&S Cycle
Now: $3,596.36Was: $3,995.95S&S Cycle - Retro Top-End Conversion Kit for Stock 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...Now: $3,596.36Was: $3,995.95 -
On Sale
S&S Cycle - Super Stock™ '66-'78 Cylinder Heads - fits 3-5/8" Bore Cylinders
S&S Cycle
Now: $1,709.96Was: $1,899.95S&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...Now: $1,709.96Was: $1,899.95 -
On Sale
S&S Cycle - '84-'99 Hydraulic Lifters Tappet with HL²T Kit
S&S Cycle
MSRP: $389.95Now: $368.96Was: $409.95S&S Cycle - '84-'99 Hydraulic Lifters Tappet with HL²T Kit Features: Rollers have a larger-than-stock inner bearing race that reduces stress and increases axle life Each lifter body and plunger assembly is hand-fit and pressure-tested to...MSRP: $389.95Now: $368.96Was: $409.95 -
On Sale
S&S Cycle - TC3 Oil Pump & Cam Support Plate Kit - fits '07-'17 Harley Twin Cam
S&S Cycle
MSRP: $819.95Now: $753.26Was: $836.95S&S Cycle - TC3 Oil Pump & Cam Support Plate Kit - fits '07-'17 Harley Twin Cam Features: Precision CNC machined forged aluminum Increased structural strength Dimensional stability Freedom for internal porosity Separate scavenge sections...MSRP: $819.95Now: $753.26Was: $836.95 -
On Sale
S&S Cycle - Oil Pump and Cam Support Plate Kit fits '17-'21 M8 Models W/ Twin Cooled™ Engines
S&S Cycle
MSRP: $819.95Now: $753.26Was: $836.95S&S Cycle - Oil Pump and Cam Support Plate Kit fits '17-'21 M8 Models W/ Twin Cooled™ Engines S&S Cycle's Oil Pump and Cam Support Plate Kit for '17-'21 M8 Models with Twin Cooled Engines™ delivers a 44% flow increase on the supply...MSRP: $819.95Now: $753.26Was: $836.95 -
On Sale
S&S Cycle - Aluminum Hydraulic Cam Chain Tensioners Kit - fits '07-'17 Twin Cam, '06 Dyna
S&S Cycle
MSRP: $169.95Now: $158.36Was: $175.95S&S Cycle - Aluminum Hydraulic Cam Chain Tensioners Kit - fits '07-'17 Twin Cam, '06 Dyna Features: For use in stock 07-17 Twin Cam engines or 99-06 Twin Cam engines with a hydraulic upgrade cam plate like the S&S TC3bodies machined from 6061...MSRP: $169.95Now: $158.36Was: $175.95 -
On Sale
S&S Cycle - Wrinkle Black Powdercoat 91cc Super Stock™ Cylinder Heads fits '06-'17 Twin Cam Models (Exc. Twin Cooled Motors)
S&S Cycle
MSRP: $1,911.95Now: $1,616.36Was: $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...MSRP: $1,911.95Now: $1,616.36Was: $1,795.95 -
On Sale
S&S Cycle - Silver Powdercoat 79cc Super Stock™ Cylinder Heads fits '99-'05 Twin Cam Models
S&S Cycle
Now: $1,934.96Was: $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...Now: $1,934.96Was: $2,149.95 -
On Sale
S&S Cycle - Wrinkle Black Powdercoat 79cc Super Stock™ Cylinder Heads fits '06-'17 Twin Cam Models (Exc. Twin Cooled Motors)
S&S Cycle
Now: $1,796.36Was: $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...Now: $1,796.36Was: $1,995.95 -
On Sale
S&S Cycle - Wrinkle Black Powdercoat 89cc Super Stock™ Cylinder Heads fits '06-'17 Twin Cam Models (Exc. Twin Cooled Motors)
S&S Cycle
Now: $1,796.36Was: $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...Now: $1,796.36Was: $1,995.95 -
On Sale
S&S Cycle - Super Stock™ Single Spark Plug Cylinder Heads - fits '79-'84 (Rubber Band Intake) 3 ⅜" Bore Cylinders
S&S Cycle
MSRP: $1,689.95Now: $1,625.36Was: $1,805.95S&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...MSRP: $1,689.95Now: $1,625.36Was: $1,805.95 -
On Sale
S&S Cycle - Wrinkle Black Powdercoat 79cc Super Stock™ Cylinder Heads fits '99-'05 Twin Cam Models (.585" Lift)
S&S Cycle
Now: $1,526.36Was: $1,695.95S&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,...Now: $1,526.36Was: $1,695.95 -
On Sale
S&S Cycle - 76cc High Compression Performance Cylinder Heads fits '84-'99 Evolution Big Twin Models - Black Powdercoat
S&S Cycle
MSRP: $1,479.95Now: $1,398.56Was: $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...MSRP: $1,479.95Now: $1,398.56Was: $1,553.95 -
On Sale
S&S Cycle - Super Stock™ Dual Spark Plug Cylinder Heads - fits '79-'84 (Rubber Band Intake) 3 ⅜" Bore Cylinders
S&S Cycle
MSRP: $1,849.95Now: $1,698.26Was: $1,886.95S&S Cycle - Super Stock™ Dual 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...MSRP: $1,849.95Now: $1,698.26Was: $1,886.95 -
Hofmann Designs - H/D Billet Timer Cover - Raw fits M8 Models
Hofmann Designs
$65.95Hofmann Designs - H/D Billet Timer Cover - Raw fits M8 Models Features: Machined in the USA from 6061 Aluminum Your choice of black anodized or raw Comes with stainless steel hardware Fitment Milwaukee 8 Models$65.95 -
Old-STF Cycle - Stainless/Black Rocker Box Split Oil Line fits '66-'84 Shovelhead
Old-STF Cycle
$99.95Old-STF Cycle - Stainless/Black Rocker Box Split Oil Line fits '66-'84 Shovelhead The Old-STF Cycle Stainless/Black Rocker Box Split Oil Line is a high-quality kit that is designed to fit Shovelhead motorcycles from 1966 to 1984. This kit features...$99.95 -
Hofmann Designs - H/D Billet Timer Cover - Black fits M8 Models
Hofmann Designs
$65.95Hofmann Designs - H/D Billet Timer Cover - Black fits M8 Models Features: Machined in the USA from 6061 Aluminum Your choice of black anodized or raw Comes with stainless steel hardware Fitment Milwaukee 8 Models$65.95 -
On Sale
S&S Cycle - Rocker Arm Stud Kit fits '17-'21 M8 Models
S&S Cycle
MSRP: $119.95Now: $110.66Was: $122.95S&S Cycle - Rocker Arm Stud Kit fits '17-'21 M8 Models This rocker arm stud kit lengthens the life of your cylinder heads AND helps prevent damage to the rocker arm towers! You can re-torque the rocker arm nuts after installation. The kit...MSRP: $119.95Now: $110.66Was: $122.95 -
Santoro Fabworx - Chacho Engine Bolt Kit fits '17-'23 M8 Softail & Touring Models
Santoro Fabworx
$450.95Santoro Fabworx - Chacho Engine Bolt Kit fits '17-'23 M8 Softail & Touring Models Give your motor and trans a pop of color with Santoro Fabworx's colored Chacho Bolt Kits. All kits come with: Chacho Covers, Stainless-Steel Socket Head Hardware to...$450.95 -
On Sale
S&S Cycle - 124" Hot Setup Kits
S&S Cycle
$6,128.06 - $6,299.96S&S Cycle - 124" Hot Setup Kits Are you a Twin Cam owner? Would you like to convert your stock engine to 124"? Then the S&S Hot Setup kit for Twin Cams is for you! The kit comes to you in a black powder-coat finish and features 4,125" bore...$6,128.06 - $6,299.96
Harley Engine
At Deadbeat Customs, we offer a wide selection of Harley engine parts built for performance, reliability, and long-lasting power. Whether you're rebuilding a vintage motor or upgrading a modern setup, we’ve got the top-end and bottom-end components you need to get the job done right.
We carry engine parts for a wide range of Harley Davidson models, including Dyna, Sportster, FXR, Touring, Softail, Shovelhead, and Panhead. From the classic Evo 1340 and Shovelhead to Twin Cam 88/96/103/110, and the modern Milwaukee-Eight 107/114/117, our catalog covers nearly every era of Harley engine design.
Choose from trusted brands like S&S Cycle, Fueling, Vance & Hines, and more—known for producing high-quality components that meet or exceed OEM standards.
Explore our full collection of Harley engine parts today and build your motor with confidence—because whether it’s vintage or modern, your Harley deserves the best from the inside out.