Floyd Rose FROSTB37 Stone Tone Sustain Block — Premium Tremolo Upgrade

Players looking for maximum tonal clarity and resonance will find the Floyd Rose FROSTB37 Stone Tone Sustain Block 37 mm a top choice. This unique sustain block uses solid granite, chosen for its density and crystalline atomic structure, making it ideal for transferring string vibration and boosting sustain. The FROSTB37 is compatible with a wide range of Floyd Rose tremolo systems and serves to elevate the performance of your instrument’s bridge.

What makes this sustain block unique

Unlike traditional brass or steel blocks, Stone Tone incorporates Volcano Black Absolute Granite—ranked as the fourth densest natural material on earth, just behind diamond, carbon, and quartz. Improved sonic transference and up to 30% less signal loss create a more powerful, full-spectrum sound.

Functional benefits and compatibility

• Material: Volcano Black Absolute Granite — delivers exceptional density for maximum sustain
• Size: 37 mm — fits Floyd Rose Original, Special, and 1000 Series (6 and 7-string) bridges
• Mounting hardware includes stainless steel screws to ensure a secure, vibration-free installation.
• Due to its larger size, some floating setups may require spring cavity routing
• Also suitable as a bridge block for non-floating configurations