Motorcycle Engine
Cometic Gasket Inc.
Cam Change Gasket Kit - 1993-99 Harley-Davidson Big Twin
$26.20
Colony
#8736-24 Valve Cover Screws 1954-1965 Harley-Davidson Panhead With Steel D-Rings - Chrome Plated
$24.71
James Gaskets
Primary Cover Gasket 1952-1969 Harley-Davidson XL
$12.32
British Standard
Inner Gearbox Gasket for Unit 650 and 750 Triumph Motorcycles OEM #57-7012 or 71-3096
8
$8.20
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
Colony
#2650-13 Top Motor Mount Hardware 1957-E1972 Harley-Davidson XL 1952-1972 Big Twin - Parkerized
1
$21.78
Colony
#7017-16 High Crown Acorn Cylinder Base Nut Set - 1930-1977 Harley-Davidson 74's - Chrome Plated
$21.66
Colony
#7604-7 Upper Motor Mount Kit Acorns Nut 1936-1984 Harley-Davidson OHV Big Twins - Chrome Plated
4
$21.52
Colony
#2370-8 Cylinder Head Motor Brace Mounting Kit 1966-1984 Harley-Davidson Shovelhead - CAD Plated
2
$20.85
Colony
#9102-8 Cylinder Base Nut Set 1978-1984 Harley-Davidson Shovelhead OEM #16838-78 - Black Oxide
2
$20.35
Colony
#2369-8 Cylinder Head Motor Brace Mounting Kit 1948-1965 Harley-Davidson Panhead - CAD Plated
6
$19.48
British Standard
Points Cover Gasket Triumph Twins and Singles
9
$6.41
Colony
#9524-1 Oil Pump Check Valve Plug 1936-1980 Harley-Davidson Big Twin 1937-Up UL/45s - CAD Plated
$9.56
Colony
#3375-3 Left Bearing Bushing Screw 1929-1936 Harley-Davidson 45"/74"/80" Twins/C Singles Twins
$19.06
Colony
#8729-12 Rubberized Cork Pushrod Cover Seals 1957-1979 Harley-Davidson XL 1936-1947 Knucklehead
1
$9.08
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.