Motorcycle Engine
Lowbrow Customs
Rear Motor Mount Plates for Triumph Motorcycles - Chopper Style - 1963 - 1970 Triumph
13
$69.35
Lowbrow Customs
FiltroMax Belt Drive Mounting Bracket
11
$23.77
British Standard
Rocker Cap/Valve Cover Set Triumph 350 500 650 Unit Twins
3
$42.41
Colony
#8316 CAD Complete Stock Hardware Kit - 1957-1969 Harley-Davidson Sportster XLCH - CAD Plated
2
$248.60
British Standard
Engine Oil Seal Kit - 7 Piece - 1963 - 1972 Triumph Unit 650
21
$52.70
Lowbrow Customs
Rear Motor Mount Plates for Triumph Motorcycles - Chopper Style w/ Key Switch Hole - 1963 - 1970 Triumph
13
$69.35
Gasbox
Top Motor Mount - 2007-up Harley-Davidson Sportster - With EFI Coil and Stock Ignition Switch Mounts
11
$49.95
Kibblewhite Precision Machining
Valve Guide Intake Exhaust Standard Size Manganese Bronze Triumph 650
3
$19.44
Lowbrow Customs
Rocker Box Oil Pressure Gauge Adapter Fitting - Brass - 1971 - Up Harley-Davidson Shovelhead, 1971 - 1985 Sportster
8
$27.74
James Gaskets
Top End Gasket Kit 1948-1965 Harley-Davidson Panhead
$40.59
Colony
#9213-4 Upper Inner Pushrod Covers 1979-Up Harley-Davidson Shovelhead 1984-Up Evo 1986-1990 XL
1
$39.11
Colony
#2140-40 Early Style Pushrod Cover Adaptor Kit 1990-2003 Harley-Davidson Sportster - Chrome Plated
1
$155.00
Colony
#7137-22 High Crown Acorn Rocker Box Bolt Kit - 1966-1984 Harley-Davidson Shovelhead - Chrome Plated
4
$51.43
Cycle Standard
Engine Stabilizer Link - Chrome - 1982-94 Harley-Davidson FXR 91-94 Dyna 80-08 Touring
2
$76.71
Gasbox
Strong Arm Top Motor Mount With OEM #71425-77 Ignition Switch Mount 1948-1984 Harley Big Twins
1
$74.95
James Gaskets
Primary Cover Gasket 1967-1976 Harley-Davidson XL
$6.73
Lowbrow Customs
FiltroMax Big Twin Bracket - Polished
10
$29.18
Colony
#2091-12 Replacement Pushrod Covers Late 1979-1984 Harley-Davidson Shovelhead - Chrome Plated
2
$70.39
Cycle Standard
Rocker Box Covers - Chrome - 1948-65 Harley-Davidson Panhead
2
$140.39
Colony
#2233-12 Rocker Arm Shaft Washer O-Ring Kit 1966-1984 Harley-Davidson Shovelhead 1957-1984 XL
23
$6.05
Lowbrow Customs
Rocker Box Oil Pressure Gauge Adapter Fitting - Chrome - 1971 - Up Harley-Davidson Shovelhead, 1971 - 1985 Sportster
9
$27.74
Lowbrow Customs
Rocker Box Oil Pressure Gauge Adapter Fitting - Chrome - 1966 - 1970 Harley-Davidson Shovelhead, 1957 - 1970 Sportster
2
$27.74
Lowbrow Customs
FiltroMax Big Twin Bracket - Black
3
$35.86
Colony
#9772-22 Lower Motor Mount Allen Screw Kit 1986-1998 Harley-Davidson Sportster - Chrome Plated
1
$33.84
British Standard
Side Cover Allen Hardware Set - Stainless- Triumph 650 c.c. Motorcycles 1963 - 1968
12
$44.47
James Gaskets
Primary Cover Gasket 1965-1988 Harley-Davidson Big Twin
$24.91
Grant Piston Rings
Piston Rings for Triumph 650 c.c. Motorcycles - .020 over
$62.26
The Heart of Your Build: Custom Motorcycle Engine Parts
The engine is the soul of your motorcycle, and keeping it running strong is what it's all about. Whether you're rebuilding a classic ironhead motor for sale you just scored or boosting the pe...
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Motorcycle Engine FAQ
I found a Sportster engine for sale. What are the first things I should check or replace?
When starting with a used engine of unknown history, it's wise to at least perform a top-end refresh. This typically includes new gaskets, checking cylinder and piston tolerances, and inspecting the valve train. This gives you peace of mind and a reliable starting point.
What are the easiest ways to get more power from my stock Sportster engine?
The most common and effective "Stage 1" upgrades are improving airflow. This means installing a high-flow air cleaner and a less restrictive exhaust system. These two changes allow the engine to breathe more freely and will deliver a noticeable performance gain without ever opening up the motor itself.
I'm rebuilding my engine. How important is it to replace all the hardware?
While not always strictly necessary, it's highly recommended. Engine hardware is subject to countless heat cycles and stress, which can cause it to stretch and weaken over time. Using new, high-quality head bolts, case bolts, and other hardware ensures proper torque specs and a leak-free, reliable engine for years to come.