Sirius S6 Titanium

The Sirius S6 takes the mind-blowing S5 to the next level.
The question was obvious: if the Sirius is “special” in steel, what would happen if it was built from Titanium?
The Sirius is a lighter and more compliant frame than the Moxie Mx3 but it was never about making a lighter frame: it was about building a supremely capable bike with a broader spectrum of use.
But with Titanium, it is  possible to ‘lose’ weight and reveal a whole new aspect to the character of the Sirius. But there’s more. With the appropriate selection of tubes – diametre, wall thickness, butt profile and shape – Titanium can deliver a ride quality that surpasses the ‘feel’ of the best steel frames. It’s a magical quality that only those who have ridden Ti can understand…and you need to experience!
Lighter and faster than your gravel bike? Possibly.
Able to keep up on the steepest trails? Probably.
Ready for your biggest adventure? Definitely.
Time to sell all your other bikes? Maybe, but you won’t.
Useful things to know.
The frame has plenty of bosses in convenient locations allowing it to carry 4 cages for bottles or kit. There’s 1 on the top tube; 2 sets of bosses (3+2) within the front triangle mean 2 bottles will happily fit, alternatively, the lower set of bosses can fit an anything/cargo cage or a single bottle can be fitted in a high or low position; another 3 bosses on the underside of the down tube give a choice of 2 positions for a bottle cage or the option to fit an anything/cargo cage.

Frame-only (includes sliders, bolts and guides).
29er, 27.5+ or 27.5
Optimised for a 100-120mm 29er fork.
Compatible with a 120-140mm 27.5 fork.
Steep seat angle for easier climbing.
Our signature, optimised, dropper-specific seat tube.
Rack mounts (discreet).
Raw Ti brushed finish.

Multi butted, 3Al/2.5V Titanium tubes.
6Al/4V Titanium yoke and frame ends.
44mm head tube (fits all steerer tubes).
CNC CS/BB yoke for compliance and tyre clearance.
3 sets of bosses for bottles or cargo cages.
Sliding dropouts give +16mm of chainstay length adjustment.
Includes Boost™ axle, M12xP1.75.
Metal headbadge.

Gallery images courtesy of bikepacking.com

Frame only. Images of bike for illustration only. Specification of frame is subject to change without prior notice. Fabricated in China,

Orders placed before 2pm ship the same working day. Free UK mainland delivery on orders over £75; bikes are shipped 95% assembled with a workshop build sheet.

Unused items can be returned within 30 days for a full refund.

Bought here, fitted here. Every bike gets a free first service at 6 weeks and our mechanics will set sag, cockpit and tyre pressures to your weight and riding style.

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