Floyd RoseOriginal Fat Brass L Tremolo Sustain Block, 37 mm

Independent shopping perspective
The Korena take
Floyd Rose’s 37 mm Fat Brass L sustain block is an upgrade block for Floyd Rose tremolo units. Its extended L profile uses space beneath the tremolo arm, adding brass mass beyond the stock-block shape. The added mass is intended to increase sustain, while the brass design is presented for added warmth, clarity, chord definition, note weight, and midrange resonance. The larger profile also affects setup: it can reduce upward tremolo travel or rest against the body for a blocked-bridge configuration.

Strong match
Who this is for
- Floyd Rose tremolo upgrades where added sustain and the tonal character of brass are the goal.
- Players setting a Floyd Rose bridge to rest against the guitar body in a blocked configuration.
Consider the trade-offs
When to look elsewhere
- Players who need unrestricted upward tremolo travel from their current bridge setup.
Final check
Know before you order
- 01A floating-bridge setup may need routing in the spring cavity.
- 02The larger block can limit the tremolo’s upward movement.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can it be used for a blocked bridge setup?
Yes. The block can be set against the guitar body for a blocked-bridge configuration.
02Will it fit a floating Floyd Rose setup without modification?
It may require routing in the spring cavity for a floating-bridge setup.




















