Guitar parts explained: main components and what they do

If you take a guitar apart you quickly realise it’s not just “wood and strings”: every part has a specific job and, in many cases, can be upgraded or replaced to improve tone, comfort and reliability.

In this guide we’ll go through:

• the main components of an electric guitar (many concepts also apply to acoustics and classical guitars),
• what each part actually does,
• which components players most often upgrade (pickups, bridge, tuners…),
• some ready-made searches on Muviber to find spare parts and upgrades.

When you want to look at real gear, start from the Guitars category or search directly for guitar parts and spares.

Big picture: what a guitar is made of

In simple terms, a guitar is made up of:

• Body
• Neck and fingerboard (with frets)
• Nut
• Tuners (machine heads)
• Bridge
• Pickups (on electrics)
• Electronics (pots, selector, jack)
• Hardware (strap buttons, screws, covers, pickguard)

Let’s break these down.

Body

The body is the main “shell” of the instrument:

• can be solid, semi-hollow or fully hollow,
• affects weight, ergonomics and general character,
• houses bridge, pickups, electronics and routings.

On Muviber you’ll find guitars with many different body shapes and woods, for example via electric guitar listings.

Neck and fingerboard

The neck is the long part you fret with your left hand (right hand if you’re left-handed). It can be bolt-on, set-neck or neck-through.

• Neck wood (maple, mahogany, etc.) influences feel and response.
• The profile (C, D, V, slim, chunky) determines how it feels in your hand.

The fingerboard sits on top of the neck:

• usually made of rosewood, maple, ebony or similar,
• affects feel and adds a bit of tonal flavour,
• holds the frets and position markers.

If you’re into bigger mods, you can even consider replacement guitar necks.

Frets

Frets are the metal bars on the fingerboard:

• define the pitch positions,
• come in different profiles (medium jumbo, jumbo, vintage),
• wear out over time and may need a level/crown or a full refret.

If you like a guitar but the frets are worn, keep refret costs in mind when evaluating the overall deal.

Nut

The nut is the small piece between the fingerboard and the headstock:

• sets the string spacing,
• affects intonation and smoothness of the first positions,
• can be made of plastic, bone, graphite, brass and other synthetic materials.

Upgrading from a cheap plastic nut to a bone or graphite nut is a classic improvement.
To explore options, search for guitar nut.

Tuners (machine heads)

Tuners are the machine heads on the headstock:

• tighten or loosen the strings,
• have a huge impact on tuning stability,
• can be open, sealed, locking, vintage-style, etc.

Replacing poor tuners is one of the most effective upgrades on an entry-level guitar.
On Muviber you can browse guitar tuners / machine heads.

Bridge

The bridge is where the strings anchor to the body.

Three big families:

Fixed bridge

• No tremolo arm.
• Maximum tuning stability and simple maintenance.
• Common on many metal guitars, single cuts, Tele-style instruments.

Vintage / modern tremolo bridge

• Found on many Strat-style guitars.
• Lets you use a tremolo arm for vibrato and pitch effects, but:
  • needs a proper setup,
  • heavy use can challenge tuning stability.

Floyd Rose / locking trem

• Double-locking system (locking nut + locking bridge).
• Allows aggressive whammy bar use while keeping tuning relatively stable.
• More complex to set up (string changes, alt tunings).

If you’re considering a bridge upgrade, look at electric guitar bridges.

Pickups

Pickups are the heart of the electric guitar’s tone:

• convert string vibration into an electrical signal,
• can be single coil, humbucker, P90, active or passive,
• placed at neck, middle and/or bridge positions.

They’re one of the most common mods for shaping your sound.

Useful searches:

• single coil pickups
• humbucker pickups
• P90 pickups

Electronics: pots, selector and jack

Inside the cavities (under the pickguard or control plate) you’ll find the electronics:

• Pots (volume, tone) – often 250k or 500k, linear or log,
• Pickup selector (3-way, 5-way, toggles),
• Tone capacitor and wiring,
• The output jack where you plug the cable.

Good wiring and decent components reduce noise, crackles and dropouts.
If you want to tweak this area, start with guitar wiring kits.

Pickguard, covers and hardware

• Pickguard: protects the top and (on many Strat-style guitars) holds pickups and electronics.
  → guitar pickguards
• Pickup covers, backplates, control plates: cover cavities and wiring.
• Strap buttons: where you attach the strap (often upgraded with strap locks).

These parts are mostly about looks and convenience, but good hardware can make a guitar feel more solid and road-ready.

Common upgrades that make a big difference

In real life, the components players upgrade most often are:

1. Pickups → to dramatically change or refine tone.
2. Tuners → for better tuning stability.
3. Bridge (or saddles) → for stability, sustain and comfort.
4. Nut → for cleaner intonation and smoother tuning.
5. Electronics → for less noise and a more responsive volume/tone.

On Muviber, you can set up focused searches like guitar pickup upgrades or guitar hardware.

FAQ – Frequently asked questions about guitar components

What are the main components of an electric guitar?

The main components are: body, neck, fingerboard, frets, nut, tuners, bridge, pickups, electronics (pots, selector, jack) and hardware (pickguard, strap buttons, covers, screws).

Which parts should I upgrade first on a budget guitar?

Most players start with pickups (for tone), tuners (for tuning stability) and, if needed, nut and electronics. In many cases, a proper professional setup alone can turn a budget guitar into a much more enjoyable instrument.

What’s the difference between a fixed bridge and a tremolo bridge?

A fixed bridge focuses on tuning stability and easy maintenance. A tremolo bridge lets you use a whammy bar for vibrato and pitch effects, but it needs more careful setup and can be more sensitive to heavy use, especially on entry-level guitars.

Is it worth changing pickups on a cheap guitar?

Yes, if the guitar is comfortable and structurally sound, changing pickups can significantly improve the sound. Before investing, always consider the overall value of the instrument and compare the cost of upgrades with the price of a higher-tier guitar.