Motorcycle Engine
Colony
#2368-8 Cylinder Head Motor Brace Mounting Kit 1948-1965 Harley-Davidson Panhead - Parkerized
$20.85
Colony
#9101-8 Cylinder Base Nut Set Zinc 1978-1984 Harley-Davidson Shovelhead OEM #16838-78 - Zinc Plated
1
$20.35
British Standard
Rotor Key - Triumph Unit 650 750
2
$9.21
Colony
#8729-12 Rubberized Cork Pushrod Cover Seals 1957-1979 Harley-Davidson XL 1936-1947 Knucklehead
1
$9.08
Colony
#2286-1 Sprocket Shaft and Pinion Gear Shaft Nut 1936-E1981 Harley-Davidson Big Twins - Parkerized
$8.80
British Standard
Ignition Pillar Bolt - Triumph / BSA
7
$8.36
Colony
#9622-16 Lifter Base Screw Kit 1936-1953 Harley-Davidson Big Twin 1937-1973 45's - Parkerized
2
$16.35
Colony
#9834-8 Chrome Countersink Washer Set for 1/4" Flat Head Socket Harley-Davidson - Chrome Plated
$15.14
Colony
#3171-12 Rubber Pushrod Cover Seals 1936-1947 Harley-Davidson Knucklehead 1957-1979 Sportster
3
$7.45
Colony
#2745-2 Oversized Ignition Timer Cover Stud Kit 1972-1979 Harley-Davidson Big Twin - Zinc Plated
$13.92
British Standard
OIF Sump Gasket Triumph T140 750 A65 TR6 TR7
2
$6.36
James Gaskets
Primary Cover Gasket 1952-1969 Harley-Davidson XL
$12.32
Colony
#2632-3 Circuit Breaker Adjusting Screw Kit 1947-1964 Harley-Davidson Big Twins/45's - CAD Plated
$12.10
Colony
#8819-4 Clutch & Brake Lever Pivot Screw Kit 1941-1964 Harley-Davidson Big Twin/45s - CAD Plated
1
$12.10
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...
Read more
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.