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First Look video: Mason Definition2

Jack takes a closer look at the new Definition2 from Mason, and gives his early impressions of this high-end aluminium road machine after a first ride…

The new Definition 2 from fledgling British bike brand Mason has had a couple of updates, and after our own Stu Kerton gave such a glowing report on the original Definition two years ago, we were keen to see what had changed.

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The most obvious aesthetic difference is not courtesy of Mason, that’ll be the new Shimano R8000 Ultegra groupset; however look a little closer, and a tale of meticulous design and quality craftsmanship is evident. While the frameset has only received minor tweaks (Dom Mason told us in a September interview that he toyed with the idea of changing the geometry but ultimately decided against it) the dropouts are a bespoke design, claimed to be more secure and responsive when paired with the latest flat-mount disc brake calipers.

All Definitions also now come with Mason’s unique and head-turning Aperture2 fork, that can take up to a recommended 33mm tyre or 30mm with a mudguard. Even the bottom bracket shell is Mason’s own custom part, which is a huge 50mm in diameter to provide plenty of space around the bearings inside for the smoothest ride. Our bike came with a 30mm tyres on the front and rear courtesy of Schwalbe, and on first impressions this adds boundless comfort without taking away any discernible speed.     

The framesets are designed in England by Mason, while the tubes are made by Dedacciai and the frame is welded in a small independent Venetian factory. Constant collaboration happens at every stage to ensure the end product is top quality. We think Mason are really pushing the boundaries of what you can expect for an aluminium bike (we’d hope so as this build comes in at £3,130), and we’re fascinated to see if it surpasses the ride of the original. Check back for a review in the new year… 

Arriving at in 2017 via 220 Triathlon Magazine, Jack dipped his toe in most jobs on the site and over at eBikeTips before being named the new editor of in 2020, much to his surprise. His cycling life began during his students days, when he cobbled together a few hundred quid off the back of a hard winter selling hats (long story) and bought his first road bike - a Trek 1.1 that was quickly relegated to winter steed, before it was sadly pinched a few years later. Creatively replacing it with a Trek 1.2, Jack mostly rides this bike around local cycle paths nowadays, but when he wants to get the racer out and be competitive his preferred events are time trials, sportives, triathlons and pogo sticking - the latter being another long story.  

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