Motorcycle Engine
British Standard
Triumph 650 to 750 c.c Big Bore Kit for 1963-1972 Models
21
$999.95
S&S Cycle
Hooligan Kit - 883cc to 1200cc for 2000 - 2021 Harley-Davidson Sportster Models - Wrinkle Black
3
$1,799.96
$1,999.95
S&S Cycle
Hooligan Kit - 1200cc to 1250cc for 2000 - 2021 Harley-Davidson Sportster Models - Wrinkle Black
$1,538.96
$1,709.95
Old-Stf Cycle
Shovelhead Rocker Box Split Oil Lines - Brass
29
$91.43
Lowbrow Customs
FiltroMax Universal Remote Oil Filter Mount - Polished
47
$67.00
V-Twin Manufacturing
Rocker Box Covers - Chrome - 1986-2003 Harley-Davidson Sportster XL
2
$110.18
$146.91
James Gaskets
Complete Motor Gasket Kit - Sportster 1000cc 1972 - 1985
8
$114.43
James Gaskets
Complete Motor Gasket Kit - Shovelhead 1966 - 1984
8
$116.17
Gasbox
Strong Arm Top Motor Mount for Crank Start Key Switch - 1984-1999 Harley-Davidson Big Twin Evolution
$74.95
James Gaskets
Top End Gasket Kit 1966-1984 Harley-Davidson Shovelhead
$71.99
Cycle Standard
Mega Nut Sprocket and Pulley Lock Nut for 1993+ Harley Sportster, Big Twin, and Twin Cam
17
$65.56
Gates Corporation
3/8 inch Black Fuel / Oil Line - By The Foot
14
From
$9.95
British Standard
Main Roller Bearing for 1966 - 1972 Triumph 650 Unit Twin Motorcycles OEM # 70-2879
13
$198.47
James Gaskets
Primary Cover & Inspection Cover Gasket Kit 8-Hole Primary Cover 1970-1982 Harley-Davidson Shovelhead
$68.87
James Gaskets
Complete Motor Gasket Kit - Sportster 900cc 1957 - 1971
1
$114.43
Til Death Cycles
Dyna Case Saver
$119.12
Gates Corporation
5/16 inch Black Fuel / Oil Line - By The Foot
10
From
$8.75
Colony
#2667-22-P Lower Motor Mount Allen Bolt Kit 1999-2003 Harley-Davidson Sportster - Chrome Plated
2
$35.87
Colony
#8316 CAD Complete Stock Hardware Kit - 1957-1969 Harley-Davidson Sportster XLCH - CAD Plated
1
$248.60
Lowbrow Customs
Rear Motor Mount Plates for Triumph Motorcycles - Chopper Style w/ Key Switch Hole - 1963 - 1970 Triumph
12
$66.05
British Standard
Engine Oil Seal Kit - 7 Piece - 1963 - 1972 Triumph Unit 650
21
$50.19
Colony
#8714-20 Big Bore Headbolt & Washer Kit 1949-Up Harley-Davidson Panhead/Shovelhead - Chrome Plated
1
$58.66
Colony
#3020-8 Head Bolt Set 12 Point 1992-Up Harley-Davidson Big Twin/Twin Cam 1993-Up XL - Zinc Plated
2
$77.00
Old-Stf Cycle
Shovelhead Rocker Box Split Oil Lines - Stainless Steel
13
$114.29
James Gaskets
Primary Cover Gasket 1965-1988 Harley-Davidson Big Twin
$24.91
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.