Motorcycle Engine
Colony
#8316 CAD Complete Stock Hardware Kit - 1957-1969 Harley-Davidson Sportster XLCH - CAD Plated
2
$248.60
James Gaskets
Complete Motor Gasket Kit - Sportster 900cc 1957 - 1971
1
$114.43
Gasbox
Strong Arm Top Motor Mount With OEM #71425-77 Ignition Switch Mount 1948-1984 Harley Big Twins
2
$74.95
James Gaskets
Primary Cover & Inspection Cover Gasket Kit 8-Hole Primary Cover 1970-1982 Harley-Davidson Shovelhead
$68.87
Gates Corporation
5/16 inch Black Fuel / Oil Line - By The Foot
11
From
$12.07
Colony
#1008 Complete Show Bike Kit Allen Hardware Harley-Davidson 1985-1986 Evo 5 Speed - Chrome Plated
$181.91
Colony
#2667-22-P Lower Motor Mount Allen Bolt Kit 1999-2003 Harley-Davidson Sportster - Chrome Plated
3
$35.87
Gates Corporation
1/4 inch Black Fuel / Oil Line - By The Foot
10
From
$11.44
James Gaskets
Primary Cover & Inspection Cover Gasket Kit 1984-1986 Harley-Davidson FL/FLH/FX/FXE/FXWG 1984-1988 Softail
$55.23
Lowbrow Customs
FiltroMax Big Twin Bracket - Tumbled
11
$34.67
Colony
#2140-40 Early Style Pushrod Cover Adaptor Kit 1990-2003 Harley-Davidson Sportster - Chrome Plated
2
$155.00
Lowbrow Customs
Rocker Box Oil Pressure Gauge Adapter Fitting - Brass - 1971 - Up Harley-Davidson Shovelhead, 1971 - 1985 Sportster
8
$32.34
Cycle Standard
Rocker Box Covers - Chrome - 1948-65 Harley-Davidson Panhead
2
$156.25
Old-Stf Cycle
Ironhead Sportster Rocker Box Loop Oil Lines - Brass
14
$64.00
James Gaskets
Primary Cover Gasket 1965-1988 Harley-Davidson Big Twin
$24.91
Colony
#8164-19 Upper And Lower Motor Mount Kit 1936-1969 Harley-Davidson Big Twin OHV - Chrome Plated
5
$57.53
Colony
#2233-12 Rocker Arm Shaft Washer O-Ring Kit 1966-1984 Harley-Davidson Shovelhead 1957-1984 XL
23
$6.05
British Standard
Triumph 650 Head Bolt Set 1963 - 1970 OEM #70-0327
8
$116.51
Colony
#9772-22 Lower Motor Mount Allen Screw Kit 1986-1998 Harley-Davidson Sportster - Chrome Plated
1
$33.84
Kibblewhite Precision Machining
Tappet Blocks 1969- 1983 for Triumph 650 / 750 Twins OEM #E9352 E9353
2
$99.99
British Standard
Triumph Oil Seal Timing Cover Points Seal OEM #70-4568
13
$17.30
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.