Ultra 52.5mm Full Solid Brass Knife Edge Tremolo Bridge - Precise Fit

In this review of the Ultra 52.5mm full solid brass 6-screw knife edge tremolo bridge, the bottom line is simple: this is a targeted upgrade for Strat-style players seeking greater sustain and a more stable tremolo feel. The bridge is clearly aimed at Mexico and Asian-made Strat variants that use 52.5mm string and screw spacing, and its solid brass construction gives the guitar a noticeable tonal weight and improved resonance right out of the box.

Key Features

• Exact fit: The 52.5mm string spacing and 6-screw mounting match many Fender Mexico and Japan style bridges, ensuring a direct swap on compatible instruments.
• Solid brass construction: The full brass plate, saddles and 41.5mm brass block increase sustain and add warmth to the guitar's tone.
• Knife edge design: The knife edge and notched mounting screws give a more precise pivot action for smoother tremolo operation.
• CNC precision: Machined components and stainless mounting screws improve durability and consistent intonation across strings.
• Complete kit: The bridge ships as a full assembly with a steel push-in tremolo arm and mounting accessories for straightforward installation.

Who It's For

The Ultra 52.5mm brass tremolo bridge is best for players of Strat-style guitars with standard Mexico/Asian 52.5mm spacing who want a denser, more sustaining tone and a robust tremolo feel. It suits those who perform frequent string bends or use the tremolo arm and who value build quality and hardware mass that brings the sound forward.

It is not intended for thin-body models such as certain Squier Bullet and Affinity guitars that use a different spacing and mounting, so players with those instruments should look for a thin-body compatible bridge instead.

Pros & Cons

Pros

• Solid brass plate and block produce increased sustain and a fuller midrange presence.
• Smooth knife edge pivot and notched screws deliver a stable, precise tremolo action.
• Stainless mounting screws and CNC machining give a quality fit and reliable intonation.
• Includes full assembly and hardware for a quicker installation on compatible guitars.

Cons

• Will not fit thin-body Strat variants like Squier Bullet or Affinity models due to different spacing.
• Heavier brass hardware may slightly alter instrument balance for players who prefer lighter components.

Specifications

Product type	6-screw knife edge tremolo bridge
String spacing	52.5mm (2-1/16 in)
Screw spacing	52.5mm (2-1/16 in)
Block length	41.5mm (1-41/64 in) solid brass
Materials	Solid brass saddles, plate and block; stainless steel screws
Mounting style	6-screw Strat style
Included	Full tremolo bridge assembly, steel push-in arm, mounting accessories

Our Verdict

The Ultra 52.5mm solid brass 6-screw tremolo bridge is a strong value for players with compatible Strat-style guitars who want more sustain, a warmer tone, and a stable tremolo feel. It is well made, installs easily on the right instruments, and delivers an audible improvement in resonance and tuning stability for the price.

Frequently Asked Questions

Will this fit my Strat?
If your guitar uses 52.5mm string and screw spacing with a 6-screw mounting pattern, this bridge is designed to be a direct fit; it will not fit thin-body models with different spacing.

What is the block made of?
The tremolo features a 41.5mm solid brass full block intended to increase sustain and add tonal weight.

Does it include a tremolo arm?
Yes, the package includes a steel push-in tremolo arm and the mounting accessories required for installation.