Full Metal Downhill

29″ / 27.5″wheels
For Hauling Ass
200 / 200

Starling Cycles Sturn Frame

A Downhill Bike For Metal Heads
The Sturn will return, but when? It’ll be ready when it’s ready.

Orders are currently CLOSED.

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Single-speed, Jack-Drive, Downhill for Metal Heads

The Starling Sturn V2 is a flat-out, ass-hauling, race-winning monster of a downhill bike that dares you to think differently.

Perfect for racers gunning for the top step or seasonaires hunting for hassle-free seasons, the Sturn is big travel, single-speed, has options for all wheels sizes and a Jack Drive suspension system.

The Jack Drive design allows the suspension and drivetrain to run through the same pivot, meaning no chain growth and the ability to run the bike single speed without dropping chains. The effect is beautifully supple rear suspension and zero distractions from your hunt for the top spot.

Not sure if the Sturn is a race bike? How about if we told you Brett Wheeler raced it to win Masters European DH Champs and the overall Portuguese National Downhill Championship Masters title?

Review

Wideopenmag
“The new Starling Sturn is the downhill bike of your metal-head dreams.”

Review

OffRoad.cc
“Starling Cycles stole the show with this mildly bonkers 29″ wheeled, steel framed singlespeed downhill concept bike.”

Review

The Radivist
“Starling Cycles stole the show with this mildly bonkers 29″ wheeled, steel framed singlespeed downhill concept bike.”

Why Starling?

Our bikes eliminate complexity.

They are the counter-argument to mountain biking’s obsession with ‘more’.

With more pivots and more space-age materials. More acronyms and more marketing bullshit. The misconception that more tech means more fun. 

We make unapologetically simple bikes. We include only what’s necessary, nothing more. Zero marketing gimmicks and next-best-thing shithousery.

We’ve stripped away the bullshit and left tough, long-lasting, beautiful and hassle-free mountain bikes. Bikes made to ride, not polish and preen. Simple to ride and bags of fun.

But simple doesn’t mean basic, and it certainly isn’t easy. It takes a whole heap of experience, expertise, testing, refinement and raw passion to make bikes this good, and this simple.

Features

  • Front triangle and swingarm hand-built in Bristol, UK, using Reynolds 853 heat-treated tubing.
  • 27.5″, mullet or 29″.
  • 200mm rear travel.
  • 200mm front travel.
  • Comes complete with a proprietary Jack Drive system manufactured from 7050 aluminium.
  • Jackshaft uses standard screw-on track cogs for easy replacement.
  • Multi-adjust shock mount to fit a full range of shock sizes and allow geometry fine-tuning.
  • 140mm high pivot.
  • Ridework eccentric bottom bracket.
  • ISCG05 bashguard mount.
  • 2.8″ tyre clearance.
  • Up to 200mm rotor.
  • Custom sizing on all frames.
  • Works with left-hand drive cranks, Middleburn and Profile available.
  • Designed for single-speed 142x12mm rear hubs.
  • Unique Starling dropouts system means rear wheel can be removed without adjusting tension.
  • Geared dropouts available on request.
  • Seat tube reinforcing strut on larger sizes.
  • Integrated seat-clamp.
  • Stainless and numbered dropper port.
  • Starling headtube gusset.
  • Custom colour options available.
  • Choose frame-only or full builds.
  • Funn, Hope, Öhlins, RockShox, Middleburn available.

Starling Cycles are made by real flesh-and-blood humans. The perfect blend of precision and passion.

Our frames are hand-crafted with quality, lightweight steel for an unmistakable feel and undeniable speed.

Our single-pivot suspension design eliminates complexity. A blast to ride and a breeze to maintain.

Geometry and sizing

Wheel size29″MX27.5″
Rider size rangecustomcustomcustom
A.Reachcustomcustomcustom
B.Stackcustomcustomcustom
C.Head Angle63° recommended63° recommended63° recommended
D.Seat Tube Lengthcustomcustomcustom
E.Head Tube Lengthcustomcustomcustom
F.Fork Length200mm recommended200mm recommended200mm recommended
G.Chainstay450mm440mm440mm
H.Wheelbasecustomcustomcustom
I.BB Drop30mm15mm15mm
J.Seat Angle76°76°76°
K.Effective Top Tubecustomcustomcustom
Max Seat Post InsertionNANANA

Technical

Travel 200mm
Shock 250 x 75mm Metric
Headset Top ZS44/28.6
Headset Bottom EC44/40
Seat Tube 31.6mm
BB Rideworks Eccentric
2437 LLU bearings
Seat Clamp Integrated
Chain Device None
Bash Mount ISCG05
Rear Axle Rear Axle, 142x12mm
Max Tyre 2.8″
Brake Mount IS
Max Disc 200mm
Front Shock Hardware 30x8mm
Rear Shock Hardware 35x8mm
Main Pivot Bearings 2437 LLB

Reviews

1 2
Mega Twist photo review
Marvin
I am simply blown away by the MegaTwist. It hast phanomenal grip, handles steeps like a champ and is planted and fun at the same time. Thanks...More
I am simply blown away by the MegaTwist.

It hast phanomenal grip, handles steeps like a champ and is planted and fun at the same time.

Thanks Joe and the great Team behind the scenes for a simply awesome mountainbike and the good times!
Swoop photo review
Assaf
When I ordered the bike I was sure it would be a big fail but couldn’t resist this thin tubes 😂 After 3 months it arrived and that’s the most close t...More
When I ordered the bike I was sure it would be a big fail but couldn’t resist this thin tubes 😂
After 3 months it arrived and that’s the most close to perfect bike I can think of for me and I rode the last years on Canfield balance,
The swoop hits you hard in the face with all the shit this industry feed us for years, it’s like the frame run naked in the forest and laughing out loud on all the other companies best efforts to make a good bike , like the pre sale support told me before I ordered them - it’s not one measure/ angel/matireal , it’s how all those things talk to each other, that’s the starling experience
Steve
I have one of the Murmur LTD frames. It was a handmade version of the 'Factory' model. I guess it's reasonably similar to the v2? Whilst I'm sure tha...More
I have one of the Murmur LTD frames. It was a handmade version of the 'Factory' model. I guess it's reasonably similar to the v2?
Whilst I'm sure that the v3 is an improvement I really can't find anything wrong with mine. It's the best bike I've owned & the best full sus bike I've ridden by a long way. The ONLY thing that could be better is the fact that bottle mounting is tight! I solved it with a fidlock bottle that will change shape a bit with boiling water and some pressure, then cold water! I'd probably sacrifice a little bit of standover to solve it but then that may reduce dropper travel. I think the newer frames have less of an issue with this though.
It climbs, pedals, descends and corners great and so far seems as tough as they come. I would have another Starling anytime I have the cash to spare!
I run mine 650+ which isn't a common setup, but I prefer it to 29. Going to try some of the new Schwalbe radial tyres on the 29er wheels but I really like the feel of the plus set up... The newer frames take slightly wider tyres in 29" through so that may make 650+ less relevant.
Oh and Cushcore - use them! Better everything, no real downside!
Beady Little Eye photo review
Simon C
I can’t get enough of this bike. I set it up as a trail bike and have been riding it everywhere I’d normally ride my Swoop. It is so much fun. It goes...More
I can’t get enough of this bike. I set it up as a trail bike and have been riding it everywhere I’d normally ride my Swoop. It is so much fun. It goes like a rocket around the Ashton Court/Leigh Woods motorway type stuff encouraging you to pump and pop just about anything and on the natural stuff, for how I like to ride, I really think this is as good as it gets.

Single speeds are my favourite type of bikes and that little bit of give that you get over a hardtail is just enough to let you really push it and leave you with a little bit of wiggle room on the drops and jumps or when things get steep and rooty. It was definitely worth the wait!
Murmur photo review
Travis
Now that I've got a few hundred kilometers on this rig, I wanted to chime in. Man! Believe the hype! I commute 50-60km each day on gnarly fire roads w...More
Now that I've got a few hundred kilometers on this rig, I wanted to chime in. Man! Believe the hype! I commute 50-60km each day on gnarly fire roads with over 1,000m of climbing. The MM is the ideal rig for this terrain. I can super comfortably peddle the steeps in the morning and rip into some singletrack coming home. This bike is perfectly poised on everything I like to ride. Thanks a million to Joe and the Starling team!
Murmur complete bike photo review
Flo
German Version below. I love this bike so much. It is beautiful, simple and rides wonderful. The grip that is provided at the rear end of the bike i...More
German Version below.
I love this bike so much. It is beautiful, simple and rides wonderful. The grip that is provided at the rear end of the bike is unbelievable. The "simplicity" of the linkage combined with the frame material is absorbing everything super comfortable, makes the rear wheel stick to the ground and the travel feels endless. Everything routed externally, almost every screw can be reached without disassembling parts, this bike is super simple, if it needs maintenance. Completely in love!

Schockverliebt. Das Rad ist wunderschön, einfach und fährt sich wunderbar. Der Grip am Heck des Bikes ist unglaublich. Die „Einfachheit“ des Hinterbaus in Kombination mit dem Rahmenmaterial sorgt für super viel Komfort und absorbiert alles, lässt den Hinterbau am Boden kleben und der Federweg fühlt sich endlos an. Alle Leitungen und Züge sind außen verlegt, fast jede Schraube ist ohne das man irgendwelche anderen Teile abbauen muss zu erreichen, das Bike macht es einem echt einfach, wenn es mal repariert werden muss. Einfach in Love mit dem Hobel.
Roost photo review
Jamie E
Big fan of my custom Roost, built with Microshift, Manitou and various other shed-found bits. It's really capable and feels very confidence-inspiring ...More
Big fan of my custom Roost, built with Microshift, Manitou and various other shed-found bits. It's really capable and feels very confidence-inspiring on technical terrain. I really enjoy jumping onto the Roost for trails I'd usually ride on my Murmur, it adds a bit of challenge (but not as much as I thought it would!) and makes for a low-stress, low-maintenance bike. It's going to be great through the winter when I want to keep my full suss tidy.
Murmur complete bike photo review
DR
I love my Murmur - recently refurbished by the team at Starling with 135mm/160mm travel and it rides so well. Use it for everything from local steeps,...More
I love my Murmur - recently refurbished by the team at Starling with 135mm/160mm travel and it rides so well. Use it for everything from local steeps, bike parks to cross country epics. Got a weekend in the Peaks and Golfie later this year for some big days out, the Murmur will be perfect for this. Climbs really well, descends amazingly. Size XL and fits a 750mm bottle in there no problem with the Fox shock.
Swoop photo review
John
From day one I’ve always loved the look of starling cycles frames, Simple design with an old school look. I demo’ed one back in 2019 and love it f...More
From day one I’ve always loved the look of starling cycles frames,
Simple design with an old school look.
I demo’ed one back in 2019 and love it from the get go

Have now been riding the swoop now for 5 years and couldn’t ask for a better trail bike.
STRONG , FAST AND FUN
Murmur photo review
Jamie
Love my Murmur - a crazy capable, versatile and reliable bike.
1 2

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