Floyd Rose FROTuFB37 Fat Tungsten Sustain Block 37 mm — Clarity & Sustain

Engineered for the Floyd Rose tremolo bridge, the FROTuFB37 Fat Tungsten Sustain Block 37 mm introduces a significant upgrade for players looking to increase sustain and note clarity. Every aspect of this model is optimized to provide superior performance by adding mass and resonance to your bridge. Designed for guitarists demanding more brightness, sustain, and attack, the Fat Tungsten Sustain Block 37 mm stands out among tremolo upgrades.

What sets this sustain block apart

Crafted from tungsten—over twice the density of brass and four times that of titanium—this block brings notable improvements in sound. Its substantial mass and hardness infuse your instrument with a brighter, more resonant tone and elongated sustain, characteristics not found in other block materials.

Functional benefits & compatibility

• Material: Tungsten — This dense construction delivers exceptional sustain and precise articulation
• Block size: 37 mm — Designed to fit most standard Floyd Rose Original, 1000 Series, and Special Series 6-string bridges
• Weight: 328 g — The heavier mass improves vibration transfer for better resonance
• Dimensions: 50.15 mm (W) x 12.75 mm (T) x 37 mm (L)
• The mounting hole spacing is 17 mm (center to center), ensuring compatibility with a range of bridges.

Some guitars may need minor spring cavity adjustments to accommodate the "fat" block profile, depending on the instrument's routing.