Lots of small changes have come together to make one big change and produce a new class killer, the Calibre Bossnut Evo.

Having listened to the many magazine reviews, team riders, and customers, Calibre have updated their Bossnut V2 with a view to making the best even better.

The frame stays with its superb geometry but now features both internal and external stealth dropper post routing, letting you choose whichever suits your style.

Rock Shox Recon RL forks are now fitted, still with 130mm travel and 15mm bolt through, but they are stiffer than the previous forks and give greater control in changes of direction and tracking your lines.

A 1x11 SRAM NX drive chain provides simplicity for the rider, yet still gives a huge range of gear ratios to clear any climb. Like everything in life, what’s better than 10? That’s right, turn it up to 11!

Each Bossnut has proven to be a fast bike, so powerful and responsive braking is now even more important. Covering this, the Evo has been fitted with Shimano MT500 brakes – a proven stopper.

Handlebars are a personal choice but several reviews sited the originals as needing to change, so it now comes fitted with a Kore Durox 780mm bar with 5 degree up and 8.5 degree back sweep.

The WTB ST rims now have an increased internal width of 29mm, giving greater strength but also a much better tyre profile which also offers more compliance. 

Giving much more grip that lets you ride faster and harder, the Vigilante front tyre is now paired with the WTB Trail Boss tyre, making the Bossnut Evo even more of a trail weapon.

• Available in S, M, L and XL. Please see the info tab for geometry details

Bossnut Evo Geometry
	15.5" (SM)	17.5" (M)	19.5" (L)	21.5" (XL)
Seat Tube	395mm	445mm	495mm	546mm
Effective Top Tube	580mm	601mm	622mm	640mm
BB Drop	18mm	18mm	18mm	33mm
Rear Centre	436mm	436mm	436mm