The Invincible 8Speed

Built for the city, perfect for anywhere.  The Invincible features custom security bolts that keep your bike and parts protected from thieves. A rust-proof frame and rust-resistant chain, paired with puncture-resistant tires, make this a no-hassle bike. The Invincible comes 80% assembled, and you do the rest with the help of our awesome online assembly instructions.  Your custom security tools are included, see HERE for additional tools needed for assembly. Free shipping in the Continental U.S.
**Test-Ride Guarantee** If it's not your favorite bike, return it back to us within 30 days for a full refund. See return policy HERE.

*For more information hover here: international orders


  • To get a replacement bike or component in the mail if yours is ever stolen, add our theft replacement guarantee. How our guarantee works.

    To activate your theft protection, you must register your bike online within 30 days of delivery:

  • Simple Sizing Guide:
    Small: 5'2"-5'6" (50cm)
    Medium: 5'7"-5'11" (54cm)
    Large: 6'0"-6'-2" (58cm)
    *Our bikes run slightly large
    Advanced Sizing Guide
  • Weight: 23 Pounds (Total Weight)


    700c Road Single Speed - 6061 Rustproof Aluminum, 1-1/8” Semi-Integrated Head Tube Horizontal Drop-Outs, Rack & Fender Mounts


    Fortified 700c 6061 Aluminum Fork With Rack & Fender Mounts with Clearance for Fenders


    Promax 15 degree 20mm rise


    Length = 90mm (S/M) Length = 105mm (L)
    Threadless, 7 deg, 6 Bolts M5*17mm

    Brakes: Promax Dual Pivot Caliper w/ Quick Release Arms

    Brake Lever: Promax Road Lever, Cross Lever
    Tire: 700 x 32 with Puncture Protection

    Chain Tensioner: Dual Adjustable Chain Tensioner
    Chainring: Prowheel Steel Chainring, Alloy Guard & Arm, 42T

    Crank: ProWheel Crank, Square Taper, 175mm

    Chain: KMC Rustbuster

    Decal: Fortified Retroflective Decal

    Security Bolts: Fortified Proprietary Stainless Steel Water Bottle Screws, Top Cap Bolt, Stem Face Plate Bolts and S/S Bolts

    Wheel Locks: Delta Fort Knox locking hub nuts
    Weight Limit:
    270 Pounds
    Gear Ratio: 42:16


Proprietary Security Bolts
Puncture-proof Tires

Fortified Theft Protection

If your bike gets stolen

* International orders may be subject to duties and customs fees. The purchaser is responsible for these fees.