Following this original review, The MASON Definition was named as a finalist in both the 'Road Bike of the Year' 2022/2023, and 'Bike of the Year' categories with the SLR winning overall! This meant that MASON was the only brand with two bikes in the final listings! Read the full award-win Definition and SLR announcement here

Now back to the MASON Definition Chorus review, where we couldn’t have asked for a better or more glowing review than this one from Stu Kerton,

The Mason Definition Chorus is a jack of all trades, yet amazingly a master of all. It's the definitive all-round road bike, one that offers great ride quality and geometry that works both at speed or when cruising along – and that's whether you're crossing town, the county, or even the country. The build quality and finish are flawless too.


Phenomenal – that's the only word I can really think of to describe the Definition as a package. Just looking at the build quality and impeccable paint finish, I could easily forgive the Mason if it rode like a garden gate. Thankfully though, it doesn't. The ride is sublime.

Back in 2015 I said I couldn't understand how a handful of alloy sticks welded together could leave you so excited, and I stand by that seven years later. Aluminium alloy still has so much to offer, and the Definition is its showcase.


The way this thing rides is a masterclass in bike design and engineering

Read the full review here.

To continue celebrating our partnership, we are running a Campagnolo promotion, with all Campagnolo bicycle orders now shipping with Campagnolo bottles, bottle cages, and Ekar Rear Fender, while stocks last.

And that’s not all, we also had two sets of bikepacking bags to giveaway. With one winner already announced, the winner of the second set of bags is still to be decided, with the final winner to be announced over the next few weeks (October 2022), good luck!

Full promotion details are here.


Our MASON-supported riders have been and continue to put the Definition to the test, with Angus Young, Winning the Pan Celtic Race 2021, and setting the fasted known time at 3 Peaks by Bicycle Challenge. For more stories, and what’s new, head over to our blog page

If you have any questions or would like to test ride a Definition or any of our bikes, we’d be happy to help, just get in touch.