Sirius S6 Ti
Sirius | Scorching | The “Dog Star” | Trail hound.
“…unlike any other bike I’ve ridden…I’ve never known a bike to climb this well, descend this well and still be this playful.” – Hardtail Party
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.
- 4 sets of bosses for bottles or cargo cages.
- Sliding dropouts give +16mm of chainstay length adjustment.
- Includes Boost™ axle, M12xP1.75.
- Metal headbadge.
Frame only. Images of bike for illustration only. Specification of frame is subject to change without prior notice.
|Long (M)||Longer (L)|
|A: Head Angle||65||65|
|B: Seat Angle||77.5||77.5|
|C: ST C-T||420||420|
|D: TT (effective)||612||632|
|E: HT Length||110||115|
|F: BB Drop||64||64|
*The frame is optimised to work with a typical 100-120mm 29er fork and geometry numbers as listed are with a 100mm fork (sagged). Stack with a typical 120mm fork (static, no sag) is 605mm i.e. +19mm.
If you have any questions about our geometry and bike set-up then please contact us: we’re happy to discuss things in more detail.
Drop Optimized Geometry®
This is our philosophy, a combination of what we believe to be the best possible geometry for mountain bikes. A balanced blend of confidence, comfort and efficiency, Drop Optimized Geometry® gives you all the encouragement you need.
“Learn the rules like a pro, so you can break them like an artist.” – Pablo Picasso
Optimize v. (used with object), op·ti·mized, op·ti·miz·ing.
to make as effective, perfect, or useful as possible.
to make the best of.
to take the full advantage of.
Still with us and want to go further? Then read on…DOG
Long, Longer and now Longish…..what does that even mean?
However, with only 2 sizes the normal monikers of small (S), medium (M), large (L) and extra-large (XL) didn’t seem appropriate so we chose Long and Longer instead. S/M and L/XL might have been more recognisable but really, they’re not that much more informative without ‘numbers’: one brands’ medium might be another brands’ large and herein lies the problem with labelling. With the addition of smaller sizes to our line-up, Longish was the natural choice. Confused?
This is one of the reasons why geometry tables are provided. But, how do you use this data?
If you compare our geometry to the data for your current bike (or some other reference frame), this should give you some indication of fit.
Designed for dropper posts.
Our Drop Optimized Geometry® can accommodate most riders between 4’11”/1.50m and 6’4”/1.93m with the selection of the appropriate length dropper post.
Current dropper posts offer around 100-215mm of adjustment allowing a wide range of riders to fit a frame with a 16.5″/420mm seat tube. Maximum usable length of seat tube is 260mm.
The table below illustrates recommended frame size for rider height.
“A short-travel hard-charger from the future…unlike any other bike I’ve ridden.” – Hardtail Party
“I’ve never known a bike to climb this well, descend this well and still be this playful.” – Hardtail Party
“What a special bike! It has so much special sauce in all the right places.” – Hardtail Party
“A.L.I.C.E. comes ready for adventure...a fantastic modern-day touring machine...” – bikepacking.com
Mox·ie (mŏk′sē) n. | Courage; guts | Aggressive energy; initiative | Skill; know-how.
“The Moxie inspires confidence and makes you want to push it further and faster…This bike isn’t just a great descender; it can be ridden all day, trail centres, a razz in the woods, uplifts at your local DH track and all-mountain adventures. Nothing is out of bounds for the Pipedream Moxie!” – IMBikemag
The Full Monty (British, slang) | Something in its entirety | Everything you could expect it to include; all that you want or need.
"It’s a hell of a bike." - Pinkbike
"...intoxicatingly fun..." - enduro-mtb
Sirius | Scorching | The "Dog Star" | Trail hound.
"...unlike any other bike I've ridden...I've never known a bike to climb this well, descend this well and still be this playful." – Hardtail Party