rmac Design

Pre-65 Triumph Tiger Cub Trials

Dave Thorpe

From his workshop in North Yorkshire, Duncan Macdonald designs and hand-builds unique components for Pre-1965 Triumph Tiger Cub trials bikes.


Armac Design is a family business, run by engineer and trials rider Duncan Macdonald and his wife Judy. They are proud to make unique, original products in Britain, backed up by personal, friendly service.


For detailed product information, pictures and stock levels, please click on the product name. If you have questions, please contact us.



or call 01751 417371


Duncan will be riding the YCC Championship trial at Litton on 15/04/18, please get in touch by Friday 13th with any delivery requests for Armac or REH Forks


He is number 59 for the Scottish Pre-65; last orders by Monday April 30 please

All Armac Design products are Copyright and Design Right Protected. Look for the logo!

Dave Stewart's Armac Cub with REH Forks. Picture: March 2018

Dave Thorpe, many-time British pre-65 champion, and winner of Pre-65 Scottish and Isle of Man 2-Day Classic, on his Armac Cub, at Hawk's Nest, Derbyshire

Picture: Yoomee Products / John Hulme

We also manufacture R.E.H. Forks., accessories and yokes: www.rehforks.com


Original Design * Quality Products * Friendly Service

Logo DS-Armac 2 DS ARmac-1