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.

Harley-Davidson Stainless Steel Motorcycle Engine

Sort by

Gasbox Strong Arm Top Motor Mount With Crank Key Mount 1948-1984 Harley Big Twins
5 reviews $74.95

Gasbox Strong Arm Top Motor Mount With Coil Mount 1948-84 Harley Big Twins
5 reviews $74.95

Old-Stf Cycle Shovelhead Rocker Box Split Oil Lines - Stainless Steel
13 reviews $114.29

Gasbox Top Motor Mount - 1957 - 1985 Ironhead Sportster XL - With Coil And Crank Key Start Mount
20 reviews $49.95

Gasbox Strong Arm Top Motor Mount with Coil Mount - 1984-1999 Harley-Davidson Big Twin Evolution
$74.95

Gasbox Strong Arm Top Motor Mount for Crank Start Key Switch - 1984-1999 Harley-Davidson Big Twin Evolution
$74.95

Gasbox Top Motor Mount - 1986-2003 Sportster - With Coil and Stock Ignition Switch Mounts
6 reviews $49.95

Gasbox Strong Arm Top Motor Mount 1948-84 Harley Big Twins
5 reviews $69.95

Gasbox Front Motor Mount Plates - Stainless Steel - 1957 - 1981 Ironhead Sportster
8 reviews $49.95

Gasbox Strong Arm Top Engine Mount For Early Big Twin Engines In Gasbox Frames
$74.95

Lowbrow Customs FiltroMax Belt Drive Mounting Bracket
11 reviews $21.61

Old-Stf Cycle Shovelhead Rocker Box Split Oil Lines - Stainless & Black
$99.95

Gasbox Strong Arm Top Motor Mount With OEM 71425-77 Ignition Switch Mount 1948-84 Harley Big Twins
1 review $74.95

Gasbox Top Motor Mount - 1986-2003 Sportster - With Ignition Coil Relocation
6 reviews $39.95

Gasbox Strong Arm Top Motor Mount - 1984-1999 Harley-Davidson Big Twin Evolution
$74.95

STAY CONNECTED
WITH LOWBROW

NO SPAM, EVER. JUST GREAT STUFF. YOUR INFO IS NEVER SHARED.