
















Rough Cut Cambium - Mystery Storm Breaker
No restocks. No hints. No second chances.
Once they're gone, they’re gone for good.




Features:
- Unparalleled Custom Craftsmanship
- Premium Black Walnut Tone-Wood
- Lightweight and extremely packable (15" & 14.9 oz)
- Superior Tonal Range
- Minimizes Audio Distortion
- Riveted Baffle Cap for durability & proper backpressure
- Adjustable 550 Paracord Carry Sling
- Amazing Auditory Experience
- Exceptional for Raking
- Minimizes Audio Distortion
- Water-Resistant Finish




Calling Hacks
Rough Cut Cambium - Mystery Storm Breaker Sound File
Powerful Deep & Low End Thump
Listen Now

Bugle Tube Care
The Nature of Wood
At Riven, we set out to make the world’s best elk bugle tube. Our Cambium Bugle Tube is designed to give you a natural acoustic resonance in the timber or anywhere you hunt. Actually, it is more like an acoustic musical instrument than just another average plastic bugle tube. It can actually improve with age. When you follow a few basic tips for care, your tube will give you years of reliable use.
Tone wood is a natural material that responds to environmental stimuli like pressure, temperature, humidity, direct sunlight, dirt, and bacteria. We recommend that you follow these tips:
- Avoid extreme temperatures. Wood will shrink and expand naturally with temperature changes, and this can affect the way your bugle tube performs. Avoid long exposure to direct sunlight.
- Watch the humidity. As with any porous natural material, wood grains are affected by humidity, and should be kept in a moderate environment. This can be particularly relevant at high altitude or in arid environs. Likewise, avoid prolonged exposure to very high humidity. After hunting, store your bugle tube in a temp controlled environment, like inside your home.
- Keep it clean. After the hunt, we recommend wiping your bugle tube down with a micro-fiber polishing cloth. Avoid harsh chemical cleaners.
- Keep it safe. While your Cambium Bugle Tube can hold up to normal wear and tear, you should always treat it as you would an acoustic instrument. Be careful not to crush it or drop it. Always carry it and store it in a safe manner to avoid physical damage.