Engine

Replacement Piston — 3.760" diameter, +0.010" oversize, 4-3/8" stroke, kit

-€23.55

DRAG SPECIALTIES Replacement Piston — 3.760" diameter, +0.010" oversize, 4-3/8"...

OEM-quality cast aluminum piston kit. Includes two pistons, wrist pins and clips. Accepts OEM or Hastings rings (rings sold separately).

€66.56 €90.11

-€26.33

DRAG SPECIALTIES Replacement Piston — 3.875" diameter, 4-3/8" stroke, kit

OEM-quality piston kit includes two pistons, wrist pins and clips. Economical replacement with proven performance.

€74.41 €100.74

-€26.33

DRAG SPECIALTIES Replacement Piston — 3.875" diameter, 4-3/8" stroke, +0.005"

OEM-quality cast aluminum alloy pistons; kits include two pistons, wrist pins and clips. Accepts OEM or Hastings rings (sold separately).

€74.41 €100.74

-€29.38

DRAG SPECIALTIES Piston — 3.750" bore, +0.020" oversize

OEM-quality piston kit for Twin Cam motors. Includes two pistons, wrist pins and clips. Accepts OEM or Hastings rings.

€83.05 €112.43

-€32.37

DRAG SPECIALTIES Big Bore Piston — Bore 3.875" , Compression 10.25:1

Big Bore piston for Twin Cam engines — precision-machined for dependable performance and straightforward installation.

€91.45 €123.82

Big Bore Piston — 3.875" bore, +0.005" oversize, 10.25:1 compression

-€30.22

DRAG SPECIALTIES Big Bore Piston — 3.875" bore, +0.005" oversize, 10.25:1...

Precision big bore piston for Twin Cam engines — ideal for rebuilds and performance builds.

€85.40 €115.62

-€17.71

DRAG SPECIALTIES Cam Chain Tensioner — Pair, Drag Specialties, 87623

Stock replacement hydraulic cam chain tensioners sold as a primary/secondary two-piece kit for timing system maintenance.

€50.06 €67.77

Mega 8 Camshaft — 232° exhaust / 230° intake, 0.472" lift, Model TQ230V3

-€124.12

COMP CAMS Mega 8 Camshaft — 232° exhaust / 230° intake, 0.472" lift,...

Performance camshaft delivering broad torque or top-end power, billet-steel construction, made in the USA.

€255.84 €379.96

-€99.30

COMP CAMS Mega 8 Camshaft — Model 234A, 240°/234° duration, 0.472" lift

High-performance camshaft with Endurance Ramps for broader torque, reduced valve train noise, and increased stability; constructed from billet steel and made in the USA.

€280.66 €379.96

-€110.72

COMP CAMS Mega 8 Camshaft — Bolt-In, Model 238A

High-performance camshaft with Endurance Ramps for broad torque, reduced valve train noise, and billet steel construction.

€228.16 €338.88

-€124.12

COMP CAMS Mega 8 Camshaft — Model 248C, High-Lift

High-performance camshaft series featuring Endurance Ramps, reduced valve-train noise, billet-steel construction, and USA manufacturing.

€255.84 €379.96

-€121.41

DRAG SPECIALTIES Connecting Rod Set — Heavy Duty, Steel

Reinforced replacements that meet or exceed OEM specs. Pre-assembled set with two-hole crankpin, retainers, bearings and nuts. Verify rod-to-flywheel clearance.

€343.11 €464.52

-€82.49

DRAG SPECIALTIES Connecting Rod Assembly — 24281-74A-BXLB1Z

Durable, OEM-compliant replacement that ships fitted and ready to install; complete kit with crankpin, retainers, bearings and nuts.

€233.13 €315.62

-€84.14

DRAG SPECIALTIES Connecting Rod Assembly — 24281-83-BX-LB1Z

Heavy-duty replacement that meets or exceeds OEM specs. Complete set fitted and ready to install; includes two-hole crankpin, aluminum retainers, bearings, nuts and forged heat-treated rods.

€237.78 €321.92

-€7.28

DRAG SPECIALTIES Cam Chain Tensioner — Primary

High-quality cam chain tensioner. Sold each.

€20.57 €27.85

Cam Chain Tensioner — Secondary, R39964-99A

-€7.28

DRAG SPECIALTIES Cam Chain Tensioner — Secondary, R39964-99A

High-quality replacement component for cam chain systems. Sold each.

€20.57 €27.85

-€14.34

DRAG SPECIALTIES Billet Flange Adapter for Spigot-Type Carbs — Aluminum

Allows mounting of OEM late-model CV or Mikuni HSR-42 carbs on early Evolution two-bolt flange manifolds. Mounting holes 2.75" on center. Can be polished, plated or painted.

€30.73 €45.07

-€132.18

COMP CAMS Mega 8 Camshaft — 246A, Bolt-In

Performance camshaft series using Comp Cams technology and Endurance Ramps; billet steel construction, reduced valve train noise, made in the USA.

€282.48 €414.66

Mega 8 Camshaft — High-lift, Intake 240°, Exhaust 250°, Model 240C

-€124.12

COMP CAMS Mega 8 Camshaft — High-lift, Intake 240°, Exhaust 250°, Model...

Performance cam series with Endurance Ramps, reduced valve train noise, billet steel construction, made in USA.

€265.34 €389.46

-€3.43

DRAG SPECIALTIES Rocker Shaft Adjuster Kit — Front, Rear, Exhaust, Intake

Complete set of shims, spacers and seals to rebuild the four rocker shafts in '66–'84 Shovelhead engines; replace with each valve job.

€9.69 €13.12

-€0.77

DRAG SPECIALTIES Rocker Shaft Seals — 4 Pack, 1966–1984 Shovelhead

Complete seal set with shims and spacers to rebuild all four rocker arm shafts on 1966–1984 Shovelhead engines. Replace with each valve job.

€2.18 €2.95

-€4.63

DRAG SPECIALTIES Rocker Arm Shaft — Front, Rear

Rocker arm shaft for Harley-Davidson models — durable construction and precision operation.

€13.09 €17.72

-€28.72

DRAG SPECIALTIES Pushrod Tube Kit — Black, 77334B

Complete kit with upper and lower tubes, clips, cups, springs and washers. O-rings and corks sold separately. One kit fits a complete engine.

€81.16 €109.88

V-Thunder™ Performance Forged Tappet — Black Oxide

-€19.10

COMP CAMS V-Thunder™ Performance Forged Tappet — Black Oxide

Forged performance replacement for stock hydraulic roller lifters. 100% tested and made in the U.S.A.

€54.03 €73.13

V-Thunder™ Race Forged Tappet — Black oxide

-€20.01

COMP CAMS V-Thunder™ Race Forged Tappet — Black oxide

Race/slow bleed upgrade design for high-performance use; each unit 100% tested; durable oxide finish; made in the U.S.A.

€56.63 €76.64

-€99.87

COMP CAMS V-Thunder™ Race Forged Tappet — Set of 4, Black Oxide

Race/slow bleed upgrade design for high-performance use. Each unit is 100% tested for proper function. Made in the United States.

€282.59 €382.46

Replacement Cylinder for Evolution Motors — 3.500" bore, 1340 cc, Black

-€85.68

DRAG SPECIALTIES Replacement Cylinder for Evolution Motors — 3.500" bore, 1340...

Direct-fit replacement cylinders with ductile cast-iron sleeves in aluminum castings; finish-honed for precise piston fit.

€242.15 €327.83

-€36.40

DRAG SPECIALTIES High Performance Oil Pump — High volume, Steel

Improves oil pressure and volume, reduces oil carryover at high rpm, 53mm rotors, die-cast aluminum body with high-strength steel gears. Fits stock and aftermarket cam support plates; not compatible with Screaming Eagle cam plate.

€102.95 €139.35

-€42.89

DRAG SPECIALTIES Oil Pump Assembly — Aluminum finish, Standard flow

High-quality cast aluminum oil pump assembly with steel gears; gaskets and seals included.

€121.22 €164.11

-€15.99

DRAG SPECIALTIES Oil Pump Parts — Gerotor Scavenge, 88721

Assorted replacement components for oil pump service and repair.

€45.19 €61.18

shop by category

Engine

Engine

Subcategories

Complete Engines

Performance Kits

Internal Parts

Cooling

Gaskets & O-Rings

Camshafts

Contact us

Products

Our company

shop by category

Engine  

Engine

Subcategories

Complete Engines

Performance Kits

Internal Parts

Cooling

Gaskets & O-Rings

Camshafts

Engine