Engine (4)

-€17.47

S&S CYCLE Replacement Ring Set for S&S Pistons — 4.125" bore, flat-top

Replacement ring sets for S&S pistons. Includes rings for two pistons. Made in the USA.

€67.97 €85.44

-€8.32

HASTINGS Replacement Piston Rings — +0.020 in, Moly coated

Includes top and second compression rings plus three-piece oil control rings; enough for two pistons.

€32.36 €40.68

-€34.97

S&S CYCLE Ring Set — Piston, 2-pack

Complete set of piston rings for reliable sealing and engine performance.

€135.99 €170.96

-€8.71

HASTINGS Replacement Piston Rings — HASTINGS, Set

Complete set of top, second, and three-piece oil control rings for two pistons. Barrel face top rings and Napier second rings provide improved sealing and heat transfer; three-piece Flex Vent oil rings ensure positive oil control. Made in the USA.

€15.25 €23.96

-€4.96

HASTINGS Replacement Piston Rings — 3.498" bore, +0.040" oversize

Complete set of top, second, and oil control rings for two pistons. Barrel face top rings, reverse torsional second rings, and three-piece oil control rails. Made in USA.

€19.26 €24.22

-€4.45

HASTINGS Replacement Piston Rings — Bore 3.000"

Includes top and second compression rings plus three-piece oil control rings. Promotes side sealing for improved oil economy. Includes enough rings for two pistons; two rings per groove except rails. Made in the USA.

€17.28 €21.73

Replacement Piston Rings — 3.937" bore, 107" displacement, Standard piston size

-€8.18

HASTINGS Replacement Piston Rings — 3.937" bore, 107" displacement,...

Complete PVD-coated piston ring set includes barrel-face top rings, Napier second rings, and three-piece Flex Vent oil control rings for two pistons. Made in the USA.

€31.78 €39.96

Replacement Piston Rings — Piston size +0.005", Bore 3.937", 107 cu in

-€14.17

HASTINGS Replacement Piston Rings — Piston size +0.005", Bore 3.937",...

Complete replacement piston ring set with PVD coating: barrel face top rings, Napier second rings, and three‑piece flex vent oil control rings. Includes enough rings for two pistons.

€55.10 €69.27

Replacement Piston Rings — Bore 3.937", Displacement 107", Piston Size +0.010"

-€13.81

HASTINGS Replacement Piston Rings — Bore 3.937", Displacement 107",...

Complete ring set for two pistons with PVD-coated barrel-face top rings, Napier second rings, and three-piece Flex Vent oil control rings.

€53.73 €67.54

Replacement Piston Rings — 4.000" bore, 114" displacement, Standard piston size

-€10.61

HASTINGS Replacement Piston Rings — 4.000" bore, 114" displacement,...

Complete replacement set including barrel‑face top rings, Napier second rings, and three‑piece flex vent oil control rings. Enough rings for two pistons.

€41.24 €51.85

-€12.73

HASTINGS Replacement Piston Rings — +0.005", 4.000" bore, 114 cu in

Complete set of top, second, and three-piece oil control rings; includes rings for two pistons.

€49.51 €62.24

-€14.66

HASTINGS Replacement Piston Rings — +0.010" piston, 4.000" bore, 114 cu in

Complete set for two pistons: top barrel-face compression rings, Napier second rings, and three-piece Flex Vent oil rings. PVD-coated faces for improved wear and heat transfer.

€57.01 €71.67

-€1.49

EASTERN MOTORCYCLE PARTS Piston Pin Clips — 10-pack, A-22097-99

Direct-fit piston pin clips for many Harley models. Made in the USA and built to OEM-equivalent standards.

€4.22 €5.71

-€1.41

S&S CYCLE Wrist Pin Circlips — Piston, 4 Pack

Durable retaining rings for wrist-pin applications; precision-formed for reliable fit and service life.

€5.50 €6.91

-€84.67

FEULING OIL PUMP CORP. High Flow Camplate — 7075 billet aluminum, gear drive

The High Flow Camplate increases oil flow and cooling, is pressure tested with a 55-60 psi relief setting, includes bearing and retainer plate hardware, and is for use with Feuling® oil pumps only.

€329.27 €413.94

-€34.97

S&S CYCLE Crankcase Breather Reed Valve — Standard thread size, silver

New-style reed valve that opens on demand to improve performance and prevent high-rpm oil carryover. Fast, simple installation. Made in the USA.

€135.99 €170.96

-€37.15

S&S CYCLE Crankcase Breather Reed Valve — +0.030" thread, Silver

Reed-style breather valve that opens on demand to reduce oil carryover and simplify installation.

€144.49 €181.64

Super Stock® Alternator Style Engine Case — 3.5" bore, fits up to 5" stroke, Black powder-coated

-€855.92

S&S CYCLE Super Stock® Alternator Style Engine Case — 3.5" bore, fits up...

3.5" stock bore alternator-style engine case; fits up to 5" stroke. Machined for EFI and includes complete hardware kit. Made in the USA.

€1,075.39 €1,931.31

-€60.02

TRASK Mystfree Kit — Crankcase breather valve, Aluminum

Improves oil drainage to the rocker; reduces oil misting from engine breathers; machined T-6061 billet construction; made in the U.S.A.

€233.41 €293.43

-€8.08

EASTERN MOTORCYCLE PARTS Dowel Pins — 0.434" x 0.500" L, 10 pack

Replacement dowel pins for precise alignment and secure assembly.

€22.84 €30.92

Pinion Shaft Key & Oil Pump Drive Key — .188" x .469" (PART# 0920-0129), .125" x .375" x .374" (PART# 0920-0130)

-€0.69

S&S CYCLE Pinion Shaft Key & Oil Pump Drive Key — .188" x .469" (PART#...

Replacement pinion and oil pump drive keys for standard bearing diameter. Sizes: .188" x .469" (PART# 0920-0129); .125" x .375" x .374" (PART# 0920-0130).

€2.68 €3.37

-€28.56

S&S CYCLE Crankcase Breather Valve — 310-0742

Stops oil carryover from Twin Cam "A" motors with stock oil pump. Easy to install during cam or oil-pump service. Not for use with Feuling pumps. Made in the USA.

€111.03 €139.59

-€4.28

S&S CYCLE Magnetic Oil Drain Plug — 1/2-20 thread

For use on S&S crankcases built after 05/01/2000. Made in the USA. Collects metallic debris to help protect the engine.

€16.89 €21.17

-€180.59

S&S CYCLE Engine Case — 3.750" bore, Silver powder-coated

Replacement Twin Cam "A" engine cases for stock H-D chassis. Greater strength than stock crankcases; Timken®-style sprocket shaft bearings; O-ring sealed passages. Compatible with most stock components. Includes S&S crankcase breather reed valve. Made in the USA. Professional installation required.

€702.33 €882.92

Crankcase Vent Filters — 0.500" diameter, Black, Chrome, Red

-€6.22

K & N Crankcase Vent Filters — 0.500" diameter, Black, Chrome, Red

Steel-base, one-piece crankcase vent filters. 50.8 mm (2") diameter; 38.1 mm (1½") height. Available with or without mounting stud.

€26.00 €32.22

-€3.41

S&S CYCLE Dowel Pin .430x.499 — Crankcase

Steel dowel pin, .430 x .499 in — precise replacement pin for alignment and fitment.

€4.30 €7.71

-€3.41

S&S CYCLE Crankcase Screen Oil — 5-piece kit

High-flow crankcase screen that traps debris without restricting oil pressure.

€13.31 €16.72

-€1.37

S&S CYCLE Crankcase Screen Oil — S&S Cycle, 31-2010

Pack of 5 crankcase oil screens. Durable mesh construction for reliable debris capture. Easy to install during oil changes.

€5.32 €6.69

-€549.14

S&S CYCLE MK-Series Engine Case — Black, Fits stock touring frame

Complete MK-Series crankcase assembly with stock deck height and large-volume sump. Reinforced for high-stress reliability; includes MSO and full hardware kit.

€2,139.73 €2,688.87

Crankcase MK-Series 4-1/2" — accepts up to 4.5" cylinders, 4.695" spigot bore, Black

-€577.44

S&S CYCLE Crankcase MK-Series 4-1/2" — accepts up to 4.5" cylinders,...

Ready for high-power M8 builds; accepts cylinders up to 4 1/2", with machined oil scraper, large sump and 4.695" spigot bore. No frame modifications required.

€2,250.00 €2,827.44

shop by category

Engine

Subcategories

Complete Engines

Performance Kits

Internal Parts

Cooling

Gaskets & O-Rings

Camshafts

Contact us

Products

Our company