Internal Parts

Piston Kit — 3.508" bore, +0.010" oversize, 9.5:1 compression, 4-stroke

-€106.40

JE PISTONS Piston Kit — 3.508" bore, +0.010" oversize, 9.5:1 compression,...

High-strength forged piston kit with premium wrist pins, carbon steel wire lock and JE Pro Seal rings.

€301.05 €407.45

-€106.40

JE PISTONS Piston Kit — 3.518", +0.020", 10.0:1

High-strength piston kit for high-horsepower V-Twin engines. Includes premium wrist pins, wire locks and pro-seal piston rings.

€301.05 €407.45

-€95.72

JE PISTONS Piston Kit — +0.020" piston, 10.25:1 compression, 4-Stroke

High-strength forged piston kit for V-Twin engines. Includes premium wrist pins, carbon steel wire lock, and pro-seal piston rings.

€270.82 €366.54

-€101.06

JE PISTONS Piston Kit — Bore 3.755", +0.005", 9.3:1, 4-Stroke

High-strength forged piston kit for high-horsepower V-Twin engines. Includes premium wrist pins, carbon steel wire lock and JE Pro Seal rings.

€285.92 €386.98

Piston Kit — 3.755" bore, +0.005" pistons, 10.25:1 compression, 4-Stroke

-€97.65

JE PISTONS Piston Kit — 3.755" bore, +0.005" pistons, 10.25:1...

Complete piston kit with premium wrist pins, carbon steel wire lock and JE Pro Seal rings; forged design for high-performance V‑Twin engines.

€289.33 €386.98

-€81.37

JE PISTONS Piston Kit — 100 cu in, 9.5:1

High-strength piston kit with premium wrist pins and JE Pro Seal rings.

€199.04 €280.41

-€81.37

JE PISTONS Piston Kit — +0.020", 9.5:1 compression

Forged piston kit for V-Twin engines; includes wrist pins, carbon steel wire lock, and Pro Seal rings.

€142.96 €224.33

-€106.40

JE PISTONS Piston Kit — 3.937" bore, 10.25:1 compression, 4-stroke

High-strength piston kit with premium wrist pins, carbon steel wire lock and JE Pro Seal rings.

€301.05 €407.45

-€93.88

JE PISTONS Piston Kit — 3.875" bore, 10.0:1 compression, Standard

High-strength forged piston kit with premium wrist pins, carbon steel wire locks, and sealed rings for durable performance.

€265.63 €359.51

-€93.88

JE PISTONS Piston Kit — +0.010", 10.0:1, 4-Stroke

High-strength forged piston kit for V-Twin engines; includes premium wrist pins, carbon steel wire lock, and JE Pro Seal rings.

€265.63 €359.51

-€93.88

JE PISTONS Piston Kit — Bore 4.005 in, Compression 10.5:1, Size +0.005 in

Complete piston kit with premium wrist pins, wire locks and JE Pro Seal rings. Precision-manufactured for consistent performance in high-horsepower V-Twin applications.

€265.63 €359.51

-€60.02

TRASK Mystfree Kit — Crankcase breather valve, 6061 T6 aluminum

Improves crankcase ventilation; helps oil drain into the rocker and reduces breather misting. Precision-machined billet aluminum; simple bolt-on installation.

€233.41 €293.43

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

-€155.08

COMP CAMS Beehive Valve Spring Kit

The Beehive Valve Spring Kit is a performance upgrade designed for Harley V-Twin engines, offering enhanced rpm capability and compatibility with high-lift cams.

€319.56 €474.64

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

-€2.75

COLONY OEM-Style Oil Pump Plug — Chrome

Precision OEM-style oil pump plug for reliable sealing and easy installation. Made in the USA.

€7.80 €10.55

Mikuni Air Cleaner Adapter — fits HSR 42/45, S&S E/G and Keihin CV, Silver

-€17.15

TRASK Mikuni Air Cleaner Adapter — fits HSR 42/45, S&S E/G and...

Mounts S&S E/G or Keihin CV style air cleaners to Mikuni HSR 42/45 carburetors. Made in the USA.

€66.68 €83.83

Steel Base Crankcase Vents — 3/8" O.D., Chrome

-€5.91

K & N Steel Base Crankcase Vents — 3/8" O.D., Chrome

One‑piece steel base vents with rubber or chrome top; can be remote‑mounted with hoses and clamps.

€24.66 €30.57

Pushrod Tappet Adjuster Locknuts — 4 Pack

-€2.61

COLONY Pushrod Tappet Adjuster Locknuts — 4 Pack

Split locknuts with 9/32"-32 thread for secure tappet adjuster retention.

Made in the USA; durable and vibration resistant.

€7.39 €10.00

-€14.73

COLONY Replacement Aluminum Pushrods — Set of 4

Aircraft-grade tubing pushrods with heat-treated steel tips; fits stock stroke lengths. Made in the USA.

€57.31 €72.04

-€16.93

COLONY Twin Cam Quick Install Lower Pushrod Tube Kit — 4-pack, lower

Kit that provides four short lower tubes and clips for easy access to the adjuster and lock nuts when installing adjustable pushrods on Twin Cam motors.

€65.86 €82.79

-€7.63

COLONY Pushrod Tube Kit — Chrome, set of 4, inner mount

Exact OEM-duplicate pushrod tube kits; upper, lower and inner cover kits sold separately. Made in the U.S.A.

€29.67 €37.30

-€8.24

COMP CAMS V-Thunder™ Tappet Assembly — COMP CAMS Hy-Rev, Hydraulic, 7410-1

Oil-metering hydraulic roller lifter with hardened high-carbon/chromium rollers, carbo-nitrided pushrod seat, and 100% testing; HY-REV™ and PRO-MAGNUM™ variants.

€23.31 €31.55

-€91.64

JE PISTONS Piston Kit — 3.875 in bore, 1545 cc, 10.5:1

Machined from 2618-T6 forged aluminum for professional competition; pins, pin locks and rings included. Made in the U.S.A.

€259.30 €350.94

-€91.64

JE PISTONS Piston Kit — 3.937", 9.5:1, 1595 cc

High-strength 2618-T6 forged-aluminum piston kit for competition; includes pins, locks and rings. Made in USA.

€259.31 €350.95

-€128.49

JE PISTONS Piston Kit — 3.937 in, 10.5:1, 1595 cc

High-strength forged 2618-T6 aluminum piston kit for extreme and competition use. Pins, locks and rings included. Made in the U.S.A.

€363.56 €492.05

-€2.82

COLONY Oil Screen Plug — Chrome

Oil screen cap for Big Twin models. Made in the USA.

€7.99 €10.81

-€1.90
Out of Stock

COLONY Oil Screen Plug — Cadmium

Oil screen plug for Big Twin models; made in the USA. Direct fit and simple installation.

€5.34 €7.24

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