Welcome to Madhouse

Allow us to introduce ourselves:

Madhouse Motors specializes in antique & vintage restorations, general maintenance, fabrication and custom builds. From rare & exotic barn finds to modern high performance motorcycles, we wrench on them all. Run by Cambridge native and internationally recognized custom motorcycle builder, J. Shia, Madhouse Motors has become a safe haven for all motorcycle riders & enthusiasts alike.

Thank you for visiting our site! Be sure to check out our Instagram @madhousemotors for daily updates and shop nonsense.


 Warm & Toasty

 Keep your machine safe this winter.

- Temperature controlled facility

- Winterizing

- Tended batteries

- Maintenance & custom modification options available

The wildness will be back!

Saturday, May 16th, 2020

297 Mass. Ave, Cambridge MA

5 - 10:30 PM & afterparty to follow

Allow us to introduce you to the “The Devil’s Advocate,” the latest build from Madhouse Motors.

1957 Royal Enfield Indian 700cc

Foot Throttle


One of a kind machines, made in-house.

Get in gear.

Order your own Madhouse Motors shirts, tanks, and sweatshirts today.


Join the team.

Visit the Shop


8 Rugg Road, Boston, MA 02134

Look for the black door with the Madhouse sign.

Email or call in advance to schedule an appointment.


Got an idea for a bike?