Motorcycle Engine
Colony
#9213-4 Upper Inner Pushrod Covers 1979-Up Harley-Davidson Shovelhead 1984-Up Evo 1986-1990 XL
2
$39.11
British Standard
Outer Gearbox Gasket for unit 650cc and 750cc Triumph Motorcycles 1963- Up OEM #71-1448
13
$10.62
Lowbrow Customs
Rear Motor Mount Plates for Triumph Motorcycles - Chopper Style w/ Key Switch Hole - 1963 - 1970 Triumph
13
$74.20
Lowbrow Customs
Rear Motor Mount Plates for Triumph Motorcycles - Chopper Style - 1963 - 1970 Triumph
13
$74.20
Colony
#9772-22-P Lower Motor Mount Smooth Allen Kit 1986-1998 Harley-Davidson Sportster - Chrome Plated
1
$35.87
James Gaskets
Primary Cover & Inspection Cover Gasket Kit With Seals 1984-1986 Harley-Davidson FL/FLH/FX/FXE/FXWG 1984-1988 Softail
$68.87
Cycle Standard
Tie Link - Chrome - 2004-Up Harley-Davidson Sportsters
3
$64.48
Old-Stf Cycle
Ironhead Sportster Rocker Box Loop Oil Lines - Brass
14
$64.00
Colony
#3445-8 Rocker Shaft End Plug & Cap Nut Kit 1971-Up Harley-Davidson Shovelhead 1971-1985 Sportster
2
$31.81
Colony
#8777-20-P Smooth Allen Head Bolt Kit 1948-Up Harley-Davidson Panhead/Shovelhead - Chrome Plated
$62.27
Colony
#7136-14 High Crown Acorn Rocker Box Bolt Kit - 1957-1976 Harley-Davidson Sportster - Chrome Plated
1
$61.56
Lowbrow Customs
Rocker Box Oil Pressure Gauge Adapter Fitting - Chrome - 1966 - 1970 Harley-Davidson Shovelhead, 1957 - 1970 Sportster
2
$30.51
Colony
#9944-24 Rocker Box Mounting Allen Kit 1999-Up Twin Cam Dyna/FLT 2000-Up Softail - Chrome Plated
2
$19.36
Colony
#9960-1 Oversize Plated Allen Timing Plug 11/16"-16 Threads Harley-Davidson OEM #720 - Chrome Plated
3
$9.56
James Gaskets
Primary Cover & Inspection Cover Gasket Kit 1984-1986 Harley-Davidson FL/FLH/FX/FXE/FXWG 1984-1988 Softail
$55.23
Cometic Gasket Inc.
Cam Change Gasket Kit - 1970-92 Harley-Davidson Big Twin
$26.20
Colony
#7137-22 High Crown Acorn Rocker Box Bolt Kit - 1966-1984 Harley-Davidson Shovelhead - Chrome Plated
4
$51.43
Colony
#9927-28 Upper & Lower Motor Mounting Allen Kit 1984-1999 Harley-Davidson Softail - Chrome Plated
$49.25
British Standard
Side Cover Allen Hardware Set - Stainless- Triumph 650 c.c. Motorcycles 1963 - 1968
12
$48.92
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.