Motorcycle Engine
Colony
#8789-28-P Rocker Box Smooth Allen Bolt Kit 1957-1976 Harley-Davidson Sportster - Chrome Plated
$33.50
Colony
#8777-20-P Smooth Allen Head Bolt Kit 1948-Up Harley-Davidson Panhead/Shovelhead - Chrome Plated
$62.27
Colony
#8782-4-P Lifter Base Smooth Allen Screw Kit 1957-1990 Harley-Davidson Sportster - Chrome Plated
1
$9.56
Colony
#2173-3-P Sprocket Cover Smooth Allen Mounting Kit 2002-2005 Harley-Davidson VRSC - Chrome Plated
1
$6.70
Colony
#2963-20 Grade 8 CP 1038 Head Bolt Kit 1948-1976 Harley-Davidson Pangead/Shovelhead - Parkerized
$43.99
Colony
#2734-3 Transmission 2nd Gear Retaining Bracket Kit 1935-1973 Harley-Davidson 45s - Parkerized
$7.87
Colony
#2308-2 Rocker Arm Cover to Frame Bracket Stud Kit 1978-1985 Harley-Davidson XL/XLCH - Zinc Plated
2
$20.31
Colony
#2368-8 Cylinder Head Motor Brace Mounting Kit 1948-1965 Harley-Davidson Panhead - Parkerized
$20.85
Colony
#2369-8 Cylinder Head Motor Brace Mounting Kit 1948-1965 Harley-Davidson Panhead - CAD Plated
6
$19.48
Colony
#2185-4 Upper Bracket BoltAnd Lock Kit 1949-1984 Harley-Davidson FL 1958-1973 Servicar - CAD Plated
$19.36
Colony
#2286-1 Sprocket Shaft and Pinion Gear Shaft Nut 1936-E1981 Harley-Davidson Big Twins - Parkerized
$8.80
British Standard
Pushrod Tube Seal Kit - Triumph 650
18
$30.56
British Standard
Engine and Transmission Lock Tab Set - 1963 - 1972 Triumph 650 with 4 Speed Gearbox
14
$25.25
Colony
#9883-20 Motor Case Flanged Hardware Kit 1996-Up Harley-Davidson Big Twin Evo - Chrome Plated
$43.45
Colony
#9926-17 Upper & Lower Motor Mounting Allen Kit 1970-1984 Harley-Davidson Big Twin - Chrome Plated
$39.11
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.