Meet INVINCIBLE - a beautiful, rugged ride that's hard to steal.

INVINCIBLE is uniquely designed to thrive in the city. It's built to prevent flats and rust and because all the components are locked down with theft-resistant bolts, it's a pain to steal.
Purchase Theft Protection to 100% guarantee your bike against theft! Get an Invincible 1-Speed or 8-Speed today.


Rust-proof chain

Rust-proof frame and chain

Go further before you have to grease your chain. Don't worry about the elements with a weather-proof chain and frame. Your frame and chain will enjoy a longer life.


Fortified U-Lock System

Fortified U-Lock System

Keep your Invincible bike safe with peace of mind. With our easy to use, no hassle, worry free Fortified U-Lock and our added Theft Protection you live happily ever after with your favorite bike.


Puncture-resistant tires

Puncture- resistant tires

Never worry about potholes and rough roads again. Worry less about flats, go further before you need new tubes.


Custom Locking Hardware

Custom Locking Hardware

Stop thieves from removing parts. Safeguard your seat and your handlebars with proprietary theft-resistant bolts. Delta locking hardware keeps your wheels safe. Lock up your bike to anything.









Boston Magazine
“If you’re searching for the perfect gift for
the city cyclist in your life. Fortified
Bicycle has you covered."


"I can say it feels like a great investment to me after seeing it and riding it in person"
Outside Magazine
"If a bike does go missing, the security team trawls Craigslist and eBay, where more than 80 percent of stolen bikes are resold"
"Fortified set out to create the ultimate city bike. This is a bike that will survive pedaling the mean streets, but more importantly will be there where you locked it up when you come back"
The Telegraph
"Fortified are keen to emphasize that their bicycle is not just special for its anti-theft properties. This, they say, is a bike designed for the city"



Invincible 1Speed

Want the ease and convenience of a single speed? Perfect for flat cities the single speed provides super simple operation!
Single Speed Single Speed
Caliper brakes Caliper brakes.
Invincible 1Speed

Invincible 8Speed

The 8Speed is perfect for hilly areas with the ability of 8 speed shifting. Want stronger stopping power? The 8 speed has you covered!
8 speed Shimano 8 speed Shimano
Disc brakes Disc brakes for powerful stopping power