Let’s face it — your drivetrain’s been through the wringer. Whether you’ve been smashing trails, dodging puddles, or grinding out a gravel epic, your chain, cassette, and rings are now home to a glorious cocktail of mud, grease, and mystery grit.
It’s time for a deep clean — and there’s only one thing brave enough to take it on: Black Stuff.
This isn’t your run-of-the-mill degreaser. This is high-performance, gel-based grime-fighting science, whipped up by our in-house chemist with one job in mind — melt the muck.
🧪 What Is Black Stuff?
Black Stuff is Duck Smart’s gel-based degreasing beast. It clings like a koala and cuts through grease like a hot knife through a stick of muddy, chain-lubed butter.
Unlike runny degreasers that dribble off the moment you spray, Black Stuffsticks to the scene of the crime, soaking deep into chain links, cassettes, and hard-to-reach places. Translation? It works smarter, longer, and harder — so you don’t have to.
🛠 How to Use Black Stuff Without Breaking a Sweat
Step 1: Get Generous. Grab a brush and go full Jackson Pollock on your cassette and drivetrain. Splash it on. Work it in. Don’t be shy — this is the moment Black Stuff lives for.
Step 2: Lube It Like You Mean It. Apply Black Stuff just like you would chain lube — a steady bead right along the centre of the chain. Full coverage = full clean.
Step 3: Chill. Literally. Let the gel do its thing for 3–5 minutes. Perfect time to put the kettle on, have a biscuit, or ponder how your bike got this filthy in the first place.
Step 4: Scrub-a-Dub. Hit your cassette, chainrings, and chain with a stiff brush. Don’t hold back — Black Stuff has softened the grime, now it’s your turn to send it packing.
Step 5: Hose Down the Havoc. Rinse thoroughly with water. A garden hose works wonders. Watch the gunk slide off like it was never there.
Pro Tip: Follow up with our Earth Mover Foaming Bike Cleaner to leave your entire bike shining and trail-ready. (It smells better, too.)
🧼 Why You’ll Love It
Clings to components so it doesn’t just run off like your old degreaser
Gel formula penetrates deep into chains and cassettes
Saves time, effort, and elbow grease
Works on all drivetrains — MTB, road, gravel, e-bikes, fixies, and more
Clean Smart. Ride Dirty.
The dirt’s going to come — that’s the fun part. But with Black Stuff in your arsenal, you can blast it off just as quickly as you earned it.
Duck Smart: Built for Bikes. Loved by Riders. Feared by Grease.
