STFU – Extreme 800 Shot Long-Duration Compound Cake
STFU is our 800 shot compound cake, engineered as part of the Encrypted Fireworks 2026 flagship range to deliver extended runtime and continuous sky coverage on a scale rarely seen within consumer fireworks. Built using 16mm and 20mm tubes with a very high NEC load, this compound focuses on sustained firing energy and long-duration visual impact.
We created STFU for customers who want maximum runtime, relentless pace, and uninterrupted performance. The large shot count combined with mixed firing sequences produces a display that remains active for an extended period, making it ideal as a centrepiece firework or as the backbone of a larger display sequence.
Product Overview
- Firework Type: Compound Cake
- Total Shots: 800
- Tube Sizes: 16mm / 20mm
- Hazard Classification: 1.3G
- Category: F3
- Net Explosive Content (NEC): 3856.2g
- Release Year: 2026
- Firing Pattern: Mixed sequence compound
Performance and Display Style
STFU is engineered around long-duration firing and continuous sky activity. The mixed firing structure introduces changes in tempo, angle, and effect density, ensuring the display maintains energy throughout its extended runtime while preventing repetition or visual fatigue.
The 16mm and 20mm calibre combination allows for high shot density and rapid firing sequences, creating a busy sky effect that sustains audience engagement for the full duration. This makes it particularly effective when used alongside larger calibre cakes from our cakes and barrages range to create layered display depth.
With nearly 4kg of NEC and an extreme shot count, STFU delivers long-form compound performance with relentless firing intensity, making it suitable for customers seeking maximum runtime and spectacle within the F3 category.
Safety and Handling
Safety is a fundamental part of our design process. STFU is classified as 1.3G and is intended for outdoor use only in large open areas suitable for F3 fireworks. Always follow UK fireworks safety guidance before use.
- Place the compound on a flat, stable surface
- Secure with bricks or sandbags to prevent movement
- Maintain safe spectator distances at all times
- Use a long-reach lighter or portfire for ignition
- Never relight a misfire
- Submerge spent fireworks in water before disposal
Adult supervision required.
Why Choose Encrypted Fireworks
We design large-format compounds to perform reliably under real display conditions. Our focus is on consistent ignition, structured pacing, and extended runtime engineering, ensuring every sequence delivers predictable results from start to finish.
- Extreme Shot Engineering: High shot counts for extended displays.
- Continuous Firing Design: Sustained visual energy throughout.
- High NEC Output: Strong and consistent aerial presence.
- Distinct Identity: Encrypted-themed products with recognisable branding.
No Interruptions
STFU delivers exactly what it promises — long-duration compound dominance with relentless firing pace. With 800 shots and an extended runtime profile, it creates a display that remains active, immersive, and visually intense from ignition through to the final sequence.
Follow us on TikTok for firing videos and new product launches: @encryptedfireworks


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