Motorcycle Engine
James Gaskets
Primary Cover & Inspection Cover Gasket Kit 1984-1986 Harley-Davidson FL/FLH/FX/FXE/FXWG 1984-1988 Softail
$55.23
British Standard
Rocker Box Gaskets 1963-1970 Triumph 650cc T120 Bonneville/TR6/Tiger
3
$9.91
Colony
#9793-9-P Upper Motor Mount Smooth Allen Kit 1986-2003 Harley-Davidson Sportster - Chrome Plated
$13.40
British Standard
Triumph Cylinder Base Nut Set Unit 650cc 1969-1972 OEM #S692 21-0692
6
$29.25
Cometic Gasket Inc.
Cam Change Gasket Kit - 1993-99 Harley-Davidson Big Twin
$26.20
Cometic Gasket Inc.
Cam Change Gasket Kit - 1970-92 Harley-Davidson Big Twin
$26.20
Colony
#9865-20 Upper Pushrod Cover Kit Harley-Davidson Big Twin Evo W/S&S Lifter Blocks - Chrome Plated
$50.08
Colony
#9927-28 Upper & Lower Motor Mounting Allen Kit 1984-1999 Harley-Davidson Softail - Chrome Plated
$49.25
James Gaskets
Primary Cover Gasket 1977-1990 Harley-Davidson XL
$12.18
British Standard
Timing Cover Gasket for unit Triumph Motorcycles OEM #71-7263
8
$10.64
Colony
#9928-20 Motor Mounting Allen Kit 1988-2006 Harley-Davidson FLT/FLHT/FXR/FXRS - Chrome Plated
1
$44.89
British Standard
Side Cover Allen Hardware Set - Stainless- Triumph 650 c.c. Motorcycles 1963 - 1968
12
$48.92
Colony
#2650-13 Top Motor Mount Hardware 1957-E1972 Harley-Davidson XL 1952-1972 Big Twin - Parkerized
1
$21.78
Colony
#2231-4 Tappet Anti-Rotation Allen Screw Kit 2000-Up Harley-Davidson Sportster - Chrome Plated
5
$20.31
Colony
#8790-28-P Rocker Box Smooth Allen Bolt Kit 1977-1985 Harley-Davidson Sportster - Chrome Plated
2
$38.59
James Gaskets
Top End Gasket Kit 1957-1971 Harley-Davidson Sportster
2
$37.10
Colony
#3049-7 Chain Oiler Adjusting Screw Kit 1932-E1950 Harley-Davidson Twins 1932-1957 45's - Parkerized
$12.09
Colony
#9772-22-P Lower Motor Mount Smooth Allen Kit 1986-1998 Harley-Davidson Sportster - Chrome Plated
1
$35.87
Colony
#9771-8 Center Motor Mount Allen Screw Kit 1986-2003 Harley-Davidson Sportster - Chrome Plated
1
$11.90
Kibblewhite Precision Machining
Outer Camshaft Bushing for Triumph 500 / 650 / 750 Twins OEM #E10286
1
$17.77
Colony
#8204-4 Hydraulic Lifter Converters Eliminate Hydraulic Units 1953-Up Harley-Davidson Big Twins
$34.05
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.