Motorcycle Engine
Colony
#2963-20 Grade 8 CP 1038 Head Bolt Kit 1948-1976 Harley-Davidson Pangead/Shovelhead - Parkerized
$43.99
Colony
#3036-22 Upper and Lower Motor Mount Kit 1937-1947 Harley-Davidson Big Twin Side Valve - Parkerized
1
$43.82
British Standard
Timing Cover Gasket for unit Triumph Motorcycles OEM #71-7263
8
$10.64
Colony
#8931-16 Rocker Cover Allen Head Screw Kit 1985-Up Harley-Davidson FL/FX 1986-Up XL - Chrome Plated
3
$20.85
Colony
#2231-4 Tappet Anti-Rotation Allen Screw Kit 2000-Up Harley-Davidson Sportster - Chrome Plated
5
$20.31
Colony
#9793-9-P Upper Motor Mount Smooth Allen Kit 1986-2003 Harley-Davidson Sportster - Chrome Plated
$13.40
British Standard
Rocker Box Gaskets 1963-1970 Triumph 650cc T120 Bonneville/TR6/Tiger
3
$9.91
Colony
#9926-17 Upper & Lower Motor Mounting Allen Kit 1970-1984 Harley-Davidson Big Twin - Chrome Plated
$39.11
Colony
#9213-4 Upper Inner Pushrod Covers 1979-Up Harley-Davidson Shovelhead 1984-Up Evo 1986-1990 XL
2
$39.11
Colony
#9960-1 Oversize Plated Allen Timing Plug 11/16"-16 Threads Harley-Davidson OEM #720 - Chrome Plated
3
$9.56
Colony
#2070-1 Oil Line Fitting Chrome 1/8 NPT Thread for 3/8 inch Hose OEM #63533-41 - Chrome Plated
6
$4.54
Colony
#9771-8 Center Motor Mount Allen Screw Kit 1986-2003 Harley-Davidson Sportster - Chrome Plated
1
$11.90
Colony
#9836-5 Chrome Countersink Washer Set for 3/8" Flat Head Socket Harley-Davidson - Chrome Plated
1
$16.73
Lowbrow Customs
Triumph Oil Feed Brass Rocker Box Acorn Nuts and Copper Washers
18
$33.42
Colony
#7603-4 Lower Motor Mount Kit Acorn Nut 1936-1984 Harley-Davidson OHV Big Twins - Chrome Plated
6
$31.87
Colony
#3445-8 Rocker Shaft End Plug & Cap Nut Kit 1971-Up Harley-Davidson Shovelhead 1971-1985 Sportster
2
$31.81
Colony
#7813-8 High Crown Acorn Cylinder Base Nut Set 1978-1984 Harley-Davidson Shovelhead - Chrome Plated
2
$29.34
British Standard
Triumph Cylinder Base Nut Set Unit 650cc 1969-1972 OEM #S692 21-0692
6
$29.25
Colony
#2745-2 Oversized Ignition Timer Cover Stud Kit 1972-1979 Harley-Davidson Big Twin - Zinc Plated
$13.92
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.