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Billet Bike Bits is the online branch of Martin CNC dedicated to the design and manufacture of custom motorcycle parts. Founded in 2007 by Roy 'Billet Brain' Martin, it specialises in billet aluminium parts such as yokes / triple trees / triple clamps, fork braces, risers, levers and more. Yoke conversions are a speciality of ours and we can fit any front-end to any bike. We also carry out full commissioned motorcycle builds.


Billet Brain is the brains behind Billet Bike Bits. Being a fully qualified mechanical engineer and an electronics engineer, Roy started his manufacturing career working within the Formula 1 industry making complex components for racing cars. Since 2007 Roy has focused his efforts on his passion for motorcycles, designing and manufacturing custom motorcycle parts. Roy has been riding motorcycles since the age of 8, when he started out riding motocross. Now he prefers cruising around on custom built Choppers and Bobbers.

Custom Bobber / Custom Chopper / Custom Motorcycle


Yokes / triple trees / triple clamps and front-end conversions have become a speciality and Billet Bike Bits are now world-renowned in this area of expertise. There is literally no front-end we can't fit to your bike. Whether it be a GSXR or R1 front-end that you want to fit to your XJR1300, VMAX or 70s muscle bike, we can do it - and everything in between.

Check out Billet Brain's Speed Shop to see our range of custom yokes / triple trees / triple clamps.


We provide a custom motorcycle building service for those that are looking for something bespoke and don't have the facilities (or time) to do so themselves. Here at Billet Bike Bits we have built custom Choppers such as the amazing replica of Captain America from the movie Easy Rider (see right), Bobbers and Café Racers. We cater to all styles.


Check out Billet Brain's Speed Shop to see some of our previous custom motorcycle builds.

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