Engine (3)

Extreme Sealing Technology Motor Gasket Kit — 3.500 in bore, for '84–'91 Big Twin

-€32.49

COMETIC Extreme Sealing Technology Motor Gasket Kit — 3.500 in bore,...

Complete motor gasket kit featuring MLS head gaskets, steel Viton®-coated base gaskets, blue Viton® valve stem seals, and AFM race-style exhaust gaskets. Made in the USA.

€110.32 €142.81

Piston Kit with Gaskets — Piston diameter 3.934", Displacement 1746 cc

-€152.67

WISECO Piston Kit with Gaskets — Piston diameter 3.934", Displacement...

Forged high-silicon aluminum pistons with Armor Plating; kit includes pistons, pins, retainer clips, top-end gasket kit and VM-Rings. Made in USA.

€431.93 €584.60

-€1,212.13

S&S CYCLE Top End Kit — 74 cu in, 3-7/16" bore, 8.0:1 compression

Complete S&S top-end kit with heads, pre-fit forged pistons, and all necessary hardware for quick installation.

€3,425.64 €4,637.77

Top End Kit — 3.500" bore, 4.25" stroke, 8.0:1 compression, 80 cu in

-€723.44

S&S CYCLE Top End Kit — 3.500" bore, 4.25" stroke, 8.0:1 compression, 80...

Complete top-end assembly with heads, cylinders, pistons, and gaskets.
Pistons pre-fit to cylinders for minimal downtime.
Includes all hardware, clamps, and seals; made in the USA.

€2,813.38 €3,536.82

Out of Stock

COMETIC Extreme Sealing Technology Complete Gasket Kit — 3,500"

The Extreme Sealing Technology Complete Gasket Kit — 3,500" is engineered for durability and performance, featuring high-quality Multi-Layer Steel head gaskets, Viton-coated base gaskets, and race-style exhaust gaskets.

€168.21

-€419.97

S&S CYCLE 91 cc Super Stock® Cylinder Heads — Powder-Coated Wrinkle Black

Designed for S&S® T-Series T2 long block engines for Harley Davidson® big twins
2.000" intake and 1.605" exhaust valves with S&S® ports
S&S® high performance valve springs support cam lift up to .650"
Compatible with stock rocker boxes, exhaust, and intake manifolds
Requires S&S valve cover gasket kit; not machined for compression releases

€1,633.25 €2,053.22

$4-1/8\" Bore Cylinder — 4.125\" bore, 4.625\" stroke, Black, 124\" Hot Set Up Kits ('99-'17 Twin Cams)$

-€213.62
Out of Stock

S&S CYCLE 4-1/8\" Bore Cylinder — 4.125\" bore, 4.625\" stroke, Black,...

Designed for 124" Hot Set Up Kits and '99-'17 Twin Cams; requires crankcase machining.

€830.76 €1,044.38

Out of Stock

COMETIC Oil Jet Gasket

The Oil Jet Gasket provides long-term reliability with premium fuel-resistant materials, ensuring durability and performance for your Harley-Davidson.

€9.61

-€115.92
Out of Stock

WISECO Piston Kit — 3.937", 4-3/8", 11:1, 1746 cc

ArmorX™-coated pistons with ArmorFit™ skirt coating for smooth, quiet operation. Includes pistons, rings, pins and circlips. Made in the U.S.A.

€327.99 €443.91

Out of Stock

COMETIC COMETIC OIL SEAL VITON VALVE STEM

OIL SEAL VITON VALVE STEM

€48.12

Piston Kit — 4.077" piston, 114 CI displacement, 11.0:1 compression

-€115.92

WISECO Piston Kit — 4.077" piston, 114 CI displacement, 11.0:1...

ArmorX™ coated piston kit with ArmorFit™ skirts, dome design for efficient burn, dedicated rings, and complete hardware included.

€327.99 €443.91

-€114.36
Out of Stock

WISECO Piston Kit — 4.122" piston, 11.0:1 compression, 117 CI

ArmorX™ coating for reduced wear and ArmorFit™ skirt coating for smooth, quiet operation. Includes pistons, rings, pins and circlips. Made in the USA.

€323.56 €437.92

-€115.92

WISECO Piston Kit — 4.247" piston, 11:1 compression, 124 CI

ArmorX™ and ArmorFit™ coatings reduce wear and ensure smooth, quiet operation. Dome design and precision components improve combustion and reliability. Complete kit with pistons, rings, pins, and circlips. Made in the USA.

€327.99 €443.91

Tracker Series™ Piston Kit — 3.875" bore, 1546 cc

-€68.28

WISECO Tracker Series™ Piston Kit — 3.875" bore, 1546 cc

Two-piston kit with forged crowns, precision-fit rings, force-fed pin oiling, pressure-seal groove and ArmorGlide® skirt coating for reduced friction and improved durability.

€193.19 €261.47

-€62.50

WISECO Tracker Series™ Piston Kit — 3.508" bore, 4.250" stroke, 1,345 cc

Forged pistons with generous valve pockets for big valves and cams.

Includes rings, piston pins and circlips for two pistons.

Force-fed pin oiling and a pressure-seal groove enhance sealing and durability.

€176.82 €239.32

Tracker Series™ Piston Kit — Bore 3.937 in, Stroke 4.375 in, Compression 10.5:1

-€72.30

WISECO Tracker Series™ Piston Kit — Bore 3.937 in, Stroke 4.375 in,...

High-strength piston kit with precision-fit rings, force-fed pin oiling, pressure-seal groove and low-friction skirt coating. Packaged with two pistons, rings, pins and circlips; made in the USA.

€204.57 €276.87

Out of Stock

WISECO Piston Kit

Upgrade your engine performance with the Piston Kit featuring ArmorX™ coating, high compression, and precision-engineered components.

€136.82

Out of Stock

COMETIC V-Twin Top End Gasket Kits

V-Twin Top End Gasket Kits provide exceptional sealing with EST technology, including all necessary gaskets and seals for top-end rebuilds.

€112.90

Out of Stock

COMETIC V-Twin Top End Gasket Kits

V-Twin Top End Gasket Kits provide exceptional sealing with EST technology, including all necessary gaskets and seals for top-end rebuilds.

€96.11

Out of Stock

COMETIC V-Twin Top End Gasket Kits

V-Twin Top End Gasket Kits provide exceptional sealing with EST technology, including all necessary gaskets and seals for top-end rebuilds.

€84.27

-€111.66

S&S CYCLE Piston Kit for Super Stock® Heads — 80 cu in, Bore 3.500 in

For S&S® Super Stock® Heads only. Kit includes pistons, rings, wrist pins, and circlips. Made in the USA.

€434.24 €545.90

Out of Stock

S&S CYCLE Super Stock™ Cylinder Heads

The S&S Super Stock™ Cylinder Heads are designed for enhanced performance and compatibility with upgrades. They come fully assembled with stainless steel valves and high-lift springs. Installation requires reusing stock headbolts and purchasing additional components separately.

€420.34

Piston Kit for Super Stock® Heads — 80", 3.500" bore, 4.250" stroke

-€114.09

S&S CYCLE Piston Kit for Super Stock® Heads — 80", 3.500" bore, 4.250"...

Complete piston kit for S&S® Super Stock® Heads; includes pistons, rings, wrist pins, and circlips. Deck height 1.3750" for 80" engine. Made in the USA.

€443.67 €557.76

Out of Stock

COMETIC V-Twin Top End Gasket Kits

V-Twin Top End Gasket Kits provide exceptional sealing with EST technology, including all necessary gaskets and seals for top-end rebuilds.

€94.51

Out of Stock

COMETIC V-Twin Top End Gasket Kits

V-Twin Top End Gasket Kits provide exceptional sealing with EST technology, including all necessary gaskets and seals for top-end rebuilds.

€142.22

Out of Stock

COMETIC V-Twin Top End Gasket Kits

V-Twin Top End Gasket Kits provide exceptional sealing with EST technology, including all necessary gaskets and seals for top-end rebuilds.

€97.97

Out of Stock

COMETIC Top End Gasket Kit

The Top End Gasket Kit features embossed stainless steel gaskets made with proprietary rubber material for enhanced durability and heat dissipation. Made in the USA.

€112.90

Out of Stock

COMETIC V-Twin Top End Gasket Kits

V-Twin Top End Gasket Kits provide exceptional sealing with EST technology, including all necessary gaskets and seals for top-end rebuilds.

€125.67

-€99.53

S&S CYCLE Piston Kit 80" Stock Big Twin — 80", 3.530", 4-1/4"

Forged piston kit for stock Big Twin motors; includes pistons, rings, wristpins, and clips. Made in the U.S.A.

€387.03 €486.56

-€99.53

S&S CYCLE Forged 3-5/8" Bore Piston Kit — 3.625" bore, standard

Forged pistons for superior strength and durability.

Modern alloys and skirt profiles reduce noise and extend engine life.

Includes pistons, rings, wristpins, and clips.

€387.03 €486.56

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