Buying guide · Music & Luthier
How to match a replacement electric guitar bridge to string spacing and mounting posts
Short answer
Match the replacement to the same bridge style and mounting pattern you already have; Electric Guitar Tremolo Bridge is a tremolo bridge assembly with two mounting screws, while Steel Guitar Bridge with Screws is a screw-mounted bridge with individual saddles rather than a post-mounted tune-o-matic style unit. Before ordering, measure your current string spread at the saddles, confirm whether your bridge uses threaded posts, pivot screws, or direct wood screws, and compare every hole location and included part in the product description.
Fit and size check
- Electric Guitar Tremolo Bridge: tremolo bridge assembly for electric guitar; listing states alloy construction, adjustable saddles, tremolo arm, two knurled mounting screws, and overall bridge size of 102 mm by 72 mm; post spacing not listed; saddle spacing not listed.
- Steel Guitar Bridge with Screws: steel guitar bridge; listing states individual saddle sections, mounting screws, and a small hex wrench are included; exact bridge size not listed; mounting screw spacing not listed; saddle spacing not listed.
- LP SG Guitar Bridge Replacement: jazz tremolo tailpiece replacement for LP and SG style instruments; listing states polished metal body and tremolo tailpiece function; mounting pattern not listed; string spacing not listed; included hardware not listed.
- 6-Piece Gold Guitar Bridge Saddles: set of six metal saddles with adjustment screws; listing states rectangular block shape with central string slot; these are saddles only, not a complete bridge; saddle width not listed; bridge compatibility not listed.
- Headstockless Electric Guitar Bridge: headstockless bridge for a 7-string instrument with slanted saddle layout; listing states pre-drilled mounting holes, mounting screws, and hex wrenches; exact dimensions not listed; this does not fit a standard 6-string electric unless your guitar is a headstockless 7-string design.
- Guitar Bridge Nut String Lock: headless guitar string lock; this is a locking nut component, not a bridge; size and compatibility details are not listed, so it is not the part to buy if you only need a conventional bridge replacement.
How to choose the right bridge
Start by identifying the bridge family already on the guitar. A replacement has to match the way the strings anchor and the way the unit mounts to the body, otherwise the strings will not line up correctly and the old holes or studs will not work. A tremolo bridge such as Electric Guitar Tremolo Bridge uses a moving bridge and arm, while a fixed screw-mounted bridge such as Steel Guitar Bridge with Screws stays in place and adjusts mainly at the saddles. A tailpiece-style vibrato unit such as LP SG Guitar Bridge Replacement is a different system again and is only sensible if your guitar was built for that style.
For string spacing, measure the distance from the center of the first string to the center of the sixth string at the saddles on your current bridge. Then compare that to the layout shown in the product photos and any dimensions stated in the listing. If the product description does not give string spacing, do not assume it is standard; ask for the center-to-center outer-string measurement, because even a small mismatch can put the strings too close to the fretboard edges or leave them misaligned over the pickup poles.
For mounting, look at the underside and top of your current bridge area before removing anything. Count whether the bridge is held by posts, pivot screws, or a row of wood screws, and note whether the mounting points are in a straight line or offset. Electric Guitar Tremolo Bridge clearly includes two mounting screws, which points to a specific tremolo-style installation, while Steel Guitar Bridge with Screws is described as using mounting screws rather than threaded bridge posts.
Also check whether you need a full bridge or only service parts. If the base plate and mounting are still correct, a saddle set like 6-Piece Gold Guitar Bridge Saddles may solve worn grooves or damaged adjustment screws without forcing you to change the whole bridge footprint.
How the pieces work together
The bridge is not one isolated part; it works with the neck angle, scale length, string path, and whatever tailpiece or tremolo system the guitar already has. The saddles set string height and intonation, but the bridge base determines where those saddles sit on the body and whether the strings break cleanly toward the tailpiece or block. That is why swapping to a different bridge type can create setup problems even when the new part physically fits.
On a tremolo-equipped guitar, the bridge plate, pivot points, springs or rear anchoring method, and tremolo arm all act as one system. Electric Guitar Tremolo Bridge is sold as a complete tremolo assembly, so it makes sense when your original guitar already uses that general format and mounting method. On a fixed bridge guitar, Steel Guitar Bridge with Screws makes more sense because its individual saddles allow setup adjustment without changing the guitar into a vibrato design.
A tailpiece-style unit such as LP SG Guitar Bridge Replacement anchors strings and provides vibrato from a separate assembly, so it is not a drop-in substitute for a screw-down hardtail or a modern fulcrum tremolo unless the body was already laid out for it. Likewise, 6-Piece Gold Guitar Bridge Saddles only replaces saddles, so it cannot correct a bridge with the wrong mounting pattern. Headstockless Electric Guitar Bridge belongs to a headstockless, multi-scale, 7-string system, which changes both the string count and the layout, so it is outside the normal replacement path for a standard electric guitar.
Common mistakes to avoid
The biggest mistake is shopping by appearance alone. Two bridges can look similar from the top but use different mounting hole locations, different saddle travel, and different overall length. Electric Guitar Tremolo Bridge is one of the few products with an actual body size given, at 102 mm by 72 mm, but that still does not tell you the string spacing or exact screw spread, so you still need to verify those points.
Another common mistake is confusing a bridge, a tailpiece, saddles, and a locking nut. 6-Piece Gold Guitar Bridge Saddles is only a six-saddle parts set, not a full bridge. Guitar Bridge Nut String Lock is a headless string lock, not a standard electric guitar bridge. Buying either one will not solve a mismatch in bridge posts or mounting holes.
Do not assume a part fits because it says electric guitar. LP SG Guitar Bridge Replacement is intended for LP and SG style instruments, which tells you it is aimed at a particular body layout, but the product description still does not provide post spacing or hole measurements. And do not confuse bass or acoustic parts with electric guitar bridges: products such as Bass Guitar Bridge 17.5mm or acoustic bridge listings are different categories and should not be used as references for a standard 6-string electric bridge replacement.
Finally, take clear measurements before disassembly if possible. Record the current outer-string spread, the distance between mounting points, whether the bridge sits on posts or screws, and whether you need a complete bridge, a tremolo assembly, or just new saddles. That turns a vague replacement search into a proper fit check.
A typical kit
- Electric Guitar Tremolo BridgeUse this when you need a complete tremolo bridge assembly and your guitar matches a two-screw tremolo mounting style.
- Steel Guitar Bridge with ScrewsUse this for a fixed screw-mounted bridge replacement with adjustable individual saddles.
- LP SG Guitar Bridge ReplacementChoose this only for a guitar already built for a jazz tremolo tailpiece on an LP or SG style layout.
- 6-Piece Gold Guitar Bridge SaddlesPick this when your bridge base fits correctly and you only need to replace worn or damaged saddles.
Questions people ask
Can I replace any electric guitar bridge with any other one if the string count is the same?
No. The string count is only one part of the fit. You also need the same mounting method, compatible hole locations, and a string spread that keeps the strings centered on the neck and pickups.
How do I measure string spacing for a replacement bridge?
Measure from the center of the first string to the center of the sixth string at the saddles on your current bridge. If you are comparing saddles instead of a full bridge, also measure the width of each existing saddle and the spacing between their adjustment points.
What is the difference between mounting posts and mounting screws?
Mounting posts are larger supports that a bridge sits on or pivots on, while mounting screws fasten the bridge plate directly to the body. The products in this guide mainly describe screw-mounted hardware, so if your current bridge sits on threaded studs or thumbwheel posts, verify that carefully before ordering.
If my saddles are worn, do I need a whole new bridge?
Not always. A saddle set like 6-Piece Gold Guitar Bridge Saddles can be enough if the bridge base, mounting, and intonation range are still good. You need to confirm the saddle shape and attachment style before treating saddles as a direct replacement.
Which items here do not fit a normal 6-string electric bridge replacement job?
Headstockless Electric Guitar Bridge is for a headstockless 7-string layout, so it is not a normal 6-string bridge replacement. Guitar Bridge Nut String Lock is a string lock rather than a bridge, and Bass Guitar Bridge 17.5mm is a bass bridge part, so neither is the right choice for a standard 6-string electric bridge swap.
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Everything mentioned above
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Electric Guitar Tremolo Bridge – Black
Steel Guitar Bridge with Screws
LP SG Guitar Bridge Replacement
6-Piece Gold Guitar Bridge Saddles
Headstockless Electric Guitar Bridge
Guitar Bridge Nut String Lock
