Motorcycle Engine
Lowbrow Customs
Triumph Oil Feed Brass Rocker Box Acorn Nuts and Copper Washers
18
$30.38
Cycle Standard
Tie Link - Chrome - 2004-Up Harley-Davidson Sportsters
2
$60.26
Colony
#2116-15 Lower Front Hex Head Motor Mount Kit 2000-Up Harley-Davidson Softail - Chrome Plated
1
$58.20
Colony
#3138-4 Rocker Arm Oil Line Fitting Kit 1966-1984 Harley-Davidson FL/FX 1957-1984 XL - Parkerized
1
$19.36
Colony
#7352-16 Heat Treated Acorn Head Bolt Kit Late 1973-1985 Harley-Davidson Sportster - Chrome Plated
$57.94
Lowbrow Customs
Rocker Box Oil Pressure Gauge Adapter Fitting - Chrome - 1966 - 1970 Harley-Davidson Shovelhead, 1957 - 1970 Sportster
2
$27.74
James Gaskets
Primary Cover & Inspection Cover Gasket Kit 1984-1986 Harley-Davidson FL/FLH/FX/FXE/FXWG 1984-1988 Softail
$55.23
Colony
#2070-1 Oil Line Fitting Chrome 1/8 NPT Thread for 3/8 inch Hose OEM #63533-41 - Chrome Plated
6
$4.54
Kibblewhite Precision Machining
Intake and Exhaust Valve Spring Set for 1963 - 1972 Triumph 650 Motorcycles OEM #99-7037 70-4221 or 70-7400
1
$54.24
British Standard
Rocker Box Gaskets 1963-1970 Triumph 650cc T120 Bonneville/TR6/Tiger
3
$9.01
British Standard
Triumph Patent Plate with Rivets
8
$17.61
James Gaskets
Primary Cover Gasket 1965-1988 Harley-Davidson Big Twin
$24.91
Colony
#9622-16 Lifter Base Screw Kit 1936-1953 Harley-Davidson Big Twin 1937-1973 45's - Parkerized
2
$16.35
British Standard
Outer Gearbox Gasket for unit 650cc and 750cc Triumph Motorcycles 1963- Up OEM #71-1448
12
$9.65
Kibblewhite Precision Machining
Intake Valve Standard Triumph 650 / 750 1963-83
1
$21.49
Kibblewhite Precision Machining
Exhaust Valve Standard Triumph 650 / 750 1963-83
5
$21.49
Colony
#8931-16 Rocker Cover Allen Head Screw Kit 1985-Up Harley-Davidson FL/FX 1986-Up XL - Chrome Plated
3
$20.85
Colony
#3690-16 Plain Head Lower Motor Mount Kit 1936-1957 Harley-Davidson OHV Big Twins - Parkerized
$40.70
James Gaskets
Primary Cover Gasket 1977-1990 Harley-Davidson XL
$12.18
Colony
#8729-12 Rubberized Cork Pushrod Cover Seals 1957-1979 Harley-Davidson XL 1936-1947 Knucklehead
1
$9.08
Kibblewhite Precision Machining
Outer Camshaft Bushing for Triumph 500 / 650 / 750 Twins OEM #E10286
1
$17.77
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.