Motorcycle Engine
Colony
#7137-22 High Crown Acorn Rocker Box Bolt Kit - 1966-1984 Harley-Davidson Shovelhead - Chrome Plated
4
$51.43
Colony
#8860-8 Cylinder Base Stud Spacer 1978-1984 Harley-Davidson Shovelhead OEM# 16836-78 - Chrome Plated
1
$24.98
Gasbox
Top Motor Mount - 2007-up Harley-Davidson Sportster - With EFI Coil and Stock Ignition Switch Mounts
10
$49.95
Kibblewhite Precision Machining
Connecting Rod Wrist Pin Bushing for 650/750 Triumph 1963 - 1983 OEM # 70-0459
3
$16.50
Colony
#9927-28 Upper & Lower Motor Mounting Allen Kit 1984-1999 Harley-Davidson Softail - Chrome Plated
$49.25
Colony
#9833-24 Rocker Cover Allen Screw Kit 1985-Up Harley-Davidson FL/FX 1986-Up XL - Chrome Plated
2
$23.91
British Standard
Rocker Cover Washers - 4 Pack - Triumph Unit 500 650
5
$6.86
Colony
#9771-8 Center Motor Mount Allen Screw Kit 1986-2003 Harley-Davidson Sportster - Chrome Plated
1
$11.90
James Gaskets
Primary Cover Gasket 1967-1976 Harley-Davidson XL
$6.73
Colony
#8931-16-P Rocker Cover Smooth Allen Kit 1985-Up Harley-Davidson FL/FX 1986-Up XL - Chrome Plated
$23.01
Colony
#9100-8 Cylinder Base Nut Set 1978-1984 Harley-Davidson Shovelhead OEM# 16838-78 - Chrome Plated
2
$22.75
British Standard
Sludge Tube for your 650cc 750cc Triumph Motorcycle OEM # 70-3903
6
$27.52
Colony
#2963-20 Grade 8 CP 1038 Head Bolt Kit 1948-1976 Harley-Davidson Pangead/Shovelhead - Parkerized
$43.99
Colony
#9213-4 Upper Inner Pushrod Covers 1979-Up Harley-Davidson Shovelhead 1984-Up Evo 1986-1990 XL
1
$39.11
Colony
#3138-4 Rocker Arm Oil Line Fitting Kit 1966-1984 Harley-Davidson FL/FX 1957-1984 XL - Parkerized
1
$19.36
James Gaskets
Top End Gasket Kit 1957-1971 Harley-Davidson Sportster
1
$37.10
Colony
#8870-21 Lower Motor Mount Kit Acorn Head 1986-1992 Harley-Davidson Sportster - Chrome Plated
$33.67
Colony
#8789-28-P Rocker Box Smooth Allen Bolt Kit 1957-1976 Harley-Davidson Sportster - Chrome Plated
$33.50
Colony
#9622-16 Lifter Base Screw Kit 1936-1953 Harley-Davidson Big Twin 1937-1973 45's - Parkerized
2
$16.35
Colony
#7603-4 Lower Motor Mount Kit Acorn Nut 1936-1984 Harley-Davidson OHV Big Twins - Chrome Plated
6
$31.87
Colony
#3445-8 Rocker Shaft End Plug & Cap Nut Kit 1971-Up Harley-Davidson Shovelhead 1971-1985 Sportster
2
$31.81
Colony
#8225-8 Rocker Shaft End Plug & Cap Kit 1971-Up Harley-Davidson Shovelhead 1971-1985 XL - CAD Plated
2
$31.81
Cycle Standard
Front Motor Mount 1982-94 Harley-Davidson FXR 80-08 FLH FLT
$31.61
Lowbrow Customs
FiltroMax Big Twin Bracket - Black
3
$29.39
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.