Motorcycle Engine
British Standard
Metric Timing Side Crankshaft Bearing for 1972-80 Triumph 650 750 Unit Twin Motorcycles OEM #70-3835
$92.30
Colony
#3549-5 Inner Primary to Motor Seals 2006-Up Harley-Davidson Dyna 2007-Up Softail/Touring Models
1
$9.08
Colony
#3445-8 Rocker Shaft End Plug & Cap Nut Kit 1971-Up Harley-Davidson Shovelhead 1971-1985 Sportster
2
$31.81
Grant Piston Rings
Piston Rings for Triumph 650 c.c. Motorcycles - .040 over
$66.50
Grant Piston Rings
Piston Rings for Triumph 650 c.c. Motorcycles - STD
2
$62.26
Colony
#3326-2 Oil Pump Cover to Oil Filter Line Fitting 1950-1957 Harley-Davidson Big Twin - CAD Plated
1
$7.26
S&S Cycle
Hooligan Kit - 883cc to 1200cc for 2000 - 2021 Harley-Davidson Sportster Models - Wrinkle Black
4
$1,640.66
$1,822.95
Colony
#8511 Complete Show Bike Kit Cap Style Hardware 1978-1984 Harley-Davidson Shovelhead - Chrome Plated
1
$400.47
Colony
#7915 Complete Show Bike Kit Acorn Hardware 1976-1977 Harley-Davidson Shovelhead - Chrome Plated
2
$383.08
Colony
#7907 Complete Show Bike Kit Acorn Hardware 1948-1957 Harley-Davidson Panhead - Chrome Plated
$383.08
Colony
#3036-22 Upper and Lower Motor Mount Kit 1937-1947 Harley-Davidson Big Twin Side Valve - Parkerized
1
$43.82
British Standard
Triumph Cylinder Base Nut Set Unit and Pre-Unit 650cc 1946-1968 OEM #P0172A 37-0076
5
$24.94
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.