Thunder Monkey

The modern Cross Country bike. Single speed or geared.

Pick your poison.

Unmistakable elements

  • Bi-laminate Gusset

    It does more than look cool.

    It does more than protect the tubes.

    It doubles the wall thickness at a crucial junction, allowing the use of thinner tubes to keep the weight down, while retaining the strength and reliability you need.

  • Art School Dropouts

    Dropouts are an important interface, not just between the frame and the wheel, but also between you and your bike. The Art School Dropouts are designed for an ease of ownership as much as a safe and reliable way to maintain power from the pedals to the wheel.

  • Swinger Dropouts

    Designed by Black Cat Bicycles way back in 2005, this is the best way to adjust chain tension, bar none. Easy and secure, it’s no wonder it was copied throughout the industry. Choose this option for the best looking and best working single speed on the market.

  • Fillet Brazing

    This construction technique yields the most opportunities while building a bike frame. With a combination of smooth seamless joints and hard square edges, you’ll get a bike like looks and rides like nothing else out there.

  • S-bend Seat Stays

    By using a selection of proprietary benders, each frame is built with tubing chosen specifically for each rider’s maximum comfort. This allows for a finely tuned ride that just isn‘t possible with off-the-shelf options.

  • Original paint

    From a one-off logo, to a full-blown freakout. No two Black Cats are finished the same. Let’s make your bike a perfect reflection of you.

Details



29 or 27.5 x 2.4” tires on a 30mm wide rim

120-140mm travel, low offset fork, depending on rider height

68-66 degree head angle, depending on fork spec/ rider height

Modern front-center dimension for long top tube, short stem

420-430 chainstay length, depending on rider height

12 x 148mm Swinger or Art School Dropouts

52mm boost chainline w/ 32t round chainring,

30.9 seatpost size, “stealth” routing, exiting toward the bottom of the seat tube

Radiused seat tube for 29” wheels

Brazed-on zip tie steel routers or Paragon Machine Works bolt-on aluminum routers, along the bottom of the down tube

Down tube bi-lam gusset

46mm straight headtube for zs44/ec44 headset and tapered steerer tube

English threaded bottom bracket

Starts at $4200 frame only, comes with a single color powder coat and single color logo or panel. original artwork starts at $1500