Engine
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Out of stock
S&S Cycle - Black Powdercoat 117" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads)
S&S Cycle
$1,643.95S&S Cycle - Black Powdercoat 117" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads) This Big Bore Kit produces outstanding outcomes with stock cylinder heads. It comes complete with cylinders, pistons,...$1,643.95 -
Out of stock
S&S Cycle - Stone Gray Powdercoat 124" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅝" Stroke, 11.4:1 Comp. W/ Stock Heads)
S&S Cycle
MSRP: $1,679.95$1,643.95S&S Cycle - Stone Gray Powdercoat 124" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅝" Stroke, 11.4:1 Comp. W/ Stock Heads) This Big Bore Kit comes complete with cylinders, pistons, rings and gaskets (head, base and exhaust)...MSRP: $1,679.95$1,643.95 -
Out of stock
S&S Cycle - Wrinkle Black 80" Bore Cylinder & Piston Kit fits '84-'00 Evolution Big Twin Models W/ Stock or S&S Heads
S&S Cycle
$1,231.95S&S Cycle - Wrinkle Black 80" Bore Cylinder & Piston Kit fits '84-'00 Evolution Big Twin Models W/ Stock or S&S Heads S&S Cycle's 80" Bore Cylinder & Piston Kits feature S&S 3½" bore cylinders and forged pistons, rings,...$1,231.95 -
Out of stock
S&S Cycle - Wrinkle Black 124" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'21 107" M8 Engines
S&S Cycle
$1,632.95S&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...$1,632.95 -
Out of stock
S&S Cycle - Wrinke Black 128" Big Bore Kit W/O Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines
S&S Cycle
$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...$1,561.95 -
Out of stock
S&S Cycle - Wrinkle Black 4¼" Bore M8 Cylinders W/O Highlighted Cylinder Fins fits '17-'20 M8 Engines
S&S Cycle
MSRP: $948.95$929.95S&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: $948.95$929.95 -
Out of stock
S&S Cycle - Wrinkle Black 4¼" Bore M8 Cylinders W/ Highlighted Cylinder Fins fits '17-'20 M8 Engines
S&S Cycle
$970.95S&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...$970.95 -
Out of stock
S&S Cycle - Black Granite 128" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines
S&S Cycle
$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...$1,559.95 -
Out of stock
S&S Cycle - Black Granite 4¼" Bore M8 Cylinders W/ Highlighted Cylinder Fins fits '17-'20 M8 Engines
S&S Cycle
MSRP: $948.95$929.95S&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: $948.95$929.95 -
Out of stock
S&S Cycle - Wrinkle Black 131" Stroker Cylinder & Piston Kit W/ Highlighted Cylinder Fins fits '17-'21 M8 Engines
S&S Cycle
$1,643.95S&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...$1,643.95 -
Out of stock
S&S Cycle - Black/Highlighted 4.375" Stroke 129" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines
S&S Cycle
$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...$1,595.95 -
Out of stock
S&S Cycle - Black/Highlighted 4.5" Stroke 132" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines
S&S Cycle
$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...$1,649.95 -
Out of stock
S&S Cycle - Black 4.5" Stroke 132" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines
S&S Cycle
$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...$1,599.95 -
Out of stock
S&S Cycle - 4⅛" Bore Cylinders fits '99-'06 Twin Cam Engines W/ 124" Hot Set Up Kits
S&S Cycle
$924.95S&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:...$924.95 -
Out of stock
S&S Cycle - 3.625" Bore Shovelhead Cylinder Kit fits '66-'84 Shovelhead Engines
S&S Cycle
$1,287.95S&S Cycle - 3.625" Bore Shovelhead Cylinder Kit fits '66-'84 Shovelhead Engines This Bore Shovelhead Cylinder Kit comes complete with front and rear cylinders, base nuts, headbolts, base gaskets and head gaskets. NOTE: 3.625" bore cylinders require...$1,287.95 -
Out of stock
S&S Cycle - Black Powdercoat Evolution-Style Aluminum Cylinders W/ Machined Fin Edges fits '84-'99 Evolution Big Twin Engines
S&S Cycle
$840.95S&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...$840.95 -
Out of stock
S&S Cycle - Retro Top-End Conversion Kit for Stock Bore Cylinders fits '66-'84 Shovelhead Engines
S&S Cycle
$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...$3,995.95 -
Out of stock
S&S Cycle - Oil Pump and Cam Support Plate Kit fits '17-'21 M8 Models W/ Twin Cooled™ Engines
S&S Cycle
$887.17S&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...$887.17 -
Out of stock
S&S Cycle - Super Stock™ Dual Spark Plug Cylinder Heads - fits '79-'84 (Rubber Band Intake) 3 ⅜" Bore Cylinders
S&S Cycle
$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...$1,886.95 -
Out of stock
Hofmann Designs - H/D Billet Timer Cover - Black fits M8 Model
Hofmann Designs
$65.95Hofmann Designs - H/D Billet Timer Cover - Black fits M8 Model 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 -
Out of stock
Sawicki - Black Heat Shield Kit for Softail Models
Sawicki Exhaust
$150.00Sawicki - Black Heat Shield Kit for Softail Models Features Optional heat shields are sold each$150.00 -
Out of stock
S&S Cycle - 465 Cam Chain Drive Camchest Kit W/ Chrome Pushrod Tubes fits '17-'20 Twin-Cooled™ M8 Touring Models
S&S Cycle
$1,721.95S&S Cycle - 465 Cam Chain Drive Camchest Kit W/ Chrome Pushrod Tubes fits '17-'20 Twin-Cooled™ M8 Touring Models Features All parts in each kit are matched to ensure superior quality, fit, finish and performance Oil pump and cam plate...$1,721.95 -
Out of stock
Jagg - Deluxe Diamond Cut Oil Cooler System
Jagg Oil Coolers
$550.99Jagg - Deluxe Diamond Cut Oil Cooler System This special edition oil cooler kit is as spectacular and durable as the gem it is named after. It is the perfect solution for Harleys with perimeter, vertical frame tubes. This cooler mounts to the left frame...$550.99 -
Out of stock
Jagg - Low Mount 10-Row Horizontal Oil Cooler fits '09-'16 Touring Models
Jagg Oil Coolers
$449.95 - $574.95Jagg - Low Mount 10-Row Horizontal Oil Cooler fits '09-'16 Touring Models Jagg's 10-Row Low Mount Oil Cooler System was designed to help Twin Cam engines deliver optimum heat exchange and flow characteristics through the use of HyperFlow Technology...$449.95 - $574.95 -
Out of stock
Jagg - Black Low Mount 6-Row Horizontal Oil Cooler fits '00-'17 Softail Models (Exc. ABS Models)
Jagg Oil Coolers
$399.95Jagg - Black Low Mount 6-Row Horizontal Oil Cooler fits '00-'17 Softail Models (Exc. ABS Models) Jagg's 6-Row Low Mount Oil Cooler Kit was designed exclusively for Twin Cam Harley-Davidson Softail Motorcycles. Its two-pass design provides greater cooling...$399.95 -
Out of stockOn Sale
Arlen Ness - 10-Gauge Lifter Block Covers fits '17-'21 M8 Softail Models (Choose Finish)
Arlen Ness
MSRP: $249.95Now: $224.96Was: $249.95Arlen Ness - 10-Gauge Lifter Block Covers fits '17-'21 M8 Softail Models (Choose Finish) These 10-gauge lifter blocks act as replacements for OEM lifter blocks and accept factory and aftermarket pushrod tubes. Available in your choice of a chrome, black...MSRP: $249.95Now: $224.96Was: $249.95 -
Out of stock
Feuling - Race Series® 592 Chain Drive Camchest Kit fits '17-Up M8 Softail
Feuling
$699.95Feuling - Race Series® 592 Chain Drive Camchest Kit fits '17-Up M8 Softail NOTE: Feuling highly recommends purchasing parts #0928-0091 and 2401-0994 when buying this Camchest kit in order to ensure optimum performance (See "Also Bought" section)...$699.95 -
Out of stock
Feuling - Race Series® 508 Chain Drive Camchest Kit fits '17-Up M8 Softail
Feuling
$699.95Feuling - Race Series® 508 Chain Drive Camchest Kit fits '17-Up M8 Softail NOTE: Feuling highly recommends purchasing parts #0928-0091 and 2401-0994 when buying this Camchest kit in order to ensure optimum performance (See "Also Bought" section)...$699.95 -
Out of stock
Feuling - 465 Race Series® Chain Drive Camshaft Kit for '17-Up M8 Softail Oil-Cooled Motors
Feuling
$659.95Feuling - 465 Race Series® Chain Drive Camshaft Kit for '17-Up M8 Softail Oil-Cooled Motors NOTE: Feuling highly recommends purchasing parts #0928-0091 and 2401-0994 when buying this Camchest kit in order to ensure optimum performance (See...$659.95 -
Out of stock
S&S Cycle - Gear-Drive Camchest Kits W/ 509G Standard Cams for '99-'06 Twin Cam (Except '06 Dyna)
S&S Cycle
$2,029.95S&S Cycle - Gear-Drive Camchest Kits W/ 509G Standard Cams for '99-'06 Twin Cam (Except '06 Dyna) Features Upgrade to S&S bolt-in performance chain-drive or gear-drive camshafts Improves engine performance - higher lift and optimized cam...$2,029.95 -
Out of stock
Feuling - 594 Race Series® Chain Drive Conversion Camchest Kits for '99-'06 Twin Cam (Except '06 Dyna Glide)
Feuling
$2,049.95Feuling - 594 Race Series® Chain Drive Conversion Camchest Kits for '99-'06 Twin Cam (Except '06 Dyna Glide) NOTE: Conversion camshafts for '99-'06 Twin Cam engines use the '99-'06 inner cam journals with the '07-'16 outer cam journals permitting...$2,049.95 -
Out of stock
S&S Cycle - 475 Cam Gear Drive Camchest Kit W/ Gloss Black Pushrod Tubes fits '17-'21 Oil-Cooled M8 Models
S&S Cycle
$1,924.95S&S Cycle - 475 Cam Gear Drive Camchest Kit W/ Gloss Black Pushrod Tubes fits '17-'20 Oil-Cooled M8 Models Features All parts in each kit are matched to ensure superior quality, fit, finish and performance Oil pump and cam plate are...$1,924.95 -
Out of stock
S&S Cycle - 465 Cam Gear Drive Camchest Kit W/ Chrome Pushrod Tubes fits '17-'21 Twin-Cooled M8 Models
S&S Cycle
$1,924.95S&S Cycle - 465 Cam Gear Drive Camchest Kit W/ Chrome Pushrod Tubes fits '17-'20 Twin-Cooled M8 Models Features Precision Machined from Billet Aluminum Blue Anodized Finish Passage Plugs Removable for servicing Independent Scavenge Sections for...$1,924.95 -
Out of stock
Feuling - Race Series® 521 Camchest Kit fits '17-Up M8 Twin-Cooled™ Motors
Feuling
$1,979.95Feuling - Race Series® 521 Camchest Kit fits '17-Up M8 Twin-Cooled™ Motors Please note this kit requires high lift valve springs PART #'s 0926-2973 or 0926-2974 (See "Also Bought" Tab). Features Quieter and smoother engine...$1,979.95 -
Out of stock
Feuling - Race Series® 592 Camchest Kit fits '17-Up M8 Oil-Cooled Motors
Feuling
$2,049.95Feuling - Race Series® 592 Camchest Kit fits '17-Up M8 Oil-Cooled Motors Please note this kit requires high lift/high load valve springs PART #'s 0926-3138 (See "Also Bought" Tab). Features Kit includes Race Series oiling system: billet 7075 oil...$2,049.95 -
Out of stock
Feuling - Race Series® 521 Camchest Kit fits '17-Up M8 Oil-Cooled Motors
Feuling
$1,979.95Feuling - Race Series® 521 Camchest Kit fits '17-Up M8 Oil-Cooled Motors Please note this kit requires high lift valve springs PART #'s 0926-2973 or 0926-2974 (See "Also Bought" Tab). Features Quieter and smoother engine operation Increase oil...$1,979.95 -
Out of stock
Feuling - Race Series® 508 Camchest Kit fits '17-Up M8 Oil-Cooled Motors
$2,049.95Feuling - Race Series® 508 Camchest Kit fits '17-Up M8 Oil-Cooled Motors Please note this kit requires high lift valve springs on stock cylinder heads PART #'s 0926-2973 or 0926-2974 (See "Also Bought" Tab). Features Quieter and smoother engine...$2,049.95 -
Out of stock
Feuling - 405 HP+ Camchest Kit fits '17-Up M8 Twin-Cooled™ Motors
$1,795.95Feuling - 405 HP+ Camchest Kit fits '17-Up M8 Twin-Cooled™ Motors Features Quieter and smoother engine operation Increase oil pressure, scavenge volume and engine oil flow 15-35 degree cooler engine temperatures 15-30 degree cooler oil...$1,795.95 -
Out of stock
Feuling - 405 HP+ Camchest Kit fits '17-Up M8 Oil-Cooled Motors
$1,795.95Feuling - 405 HP+ Camchest Kit fits '17-Up M8 Oil-Cooled Motors Features Quieter and smoother engine operation Increase oil pressure, scavenge volume and engine oil flow 15-35 degree cooler engine temperatures 15-30 degree cooler oil...$1,795.95 -
Out of stock
S&S Cycle - Roller Rocker Arms fits M8 Softail Models
S&S Cycle
$674.95S&S Cycle - Roller Rocker Arms fits M8 Softail Models Features Forged from 8620 steel, heat-treated then shot-peened for additional strength and durability Rocker arms have .75" long bushings instead of the .50" long bushings found on most other...$674.95
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.