Top 10 Tools Every Serious Harley Performance Builder Should Own. 

Building a serious Harley-Davidson performance motorcycle takes more than a socket set and a pile of aftermarket parts.

Once you move beyond basic bolt-on modifications, the job becomes increasingly about measurement, diagnosis, precision and verification. Whether you're building a Milwaukee-Eight street bike, a high-horsepower bagger, a drag bike or a custom V-Twin, having the right tools can make the difference between simply installing parts and actually building a complete performance package.

The best Harley builders don't just replace parts until something improves. They measure what's happening, diagnose problems, verify clearances and test the results.

Here are 10 tools—or categories of tools—that belong in the serious Harley performance builder's arsenal.

1. Quality Torque Wrenches

Few tools are more important to engine and motorcycle assembly than a properly calibrated torque wrench.

Harley engines and motorcycles contain plenty of aluminum components, threaded holes, engine fasteners, exhaust flanges and drivetrain components where overtightening can damage parts and undertightening can lead to leaks or fasteners coming loose.

Serious builders will typically need both inch-pound and foot-pound torque wrenches to cover the wide range of fasteners found throughout a motorcycle.

The lesson is simple:

Torque specifications aren't suggestions.

Proper torque helps maintain clamping force, protects threads and gives the builder repeatable results every time the motorcycle comes apart and goes back together.

2. Motorcycle Lift or Heavy-Duty Motorcycle Jack

A good motorcycle lift isn't simply about making the job more comfortable. 

It gives the builder a stable working platform and a much better view of the entire motorcycle.

That becomes particularly important when installing or fabricating exhaust systems, adjusting suspension, removing wheels or evaluating clearance around the engine and chassis.

A lift makes it easier to inspect:

• Exhaust-to-frame clearance
• Ground clearance
• Suspension travel
• Belt and chain clearance
• Oil and brake lines
• Rider controls
• Wiring
• Exhaust mounting points

Performance motorcycles often package a tremendous number of components into a very small amount of space. Being able to inspect the motorcycle from multiple angles can reveal problems that are difficult to see while working on the floor.