Regular price £2,555.00

Disc or Calliper brakes
Frame set or Complete

The DSS4 is a race bred road machine, built from Columbus's premium HSS tube set.

Available in two options:

DSS4 CL // Calliper brake

DSS4 DSC // Disc brake (Thru axle/flat mount)

As with all our Signature frames, these are built to order, by hand, in our workshop. As such, the frame can be tuned for your needs with custom sizing, braze ons and mounts.

Frame set includes: Frame, fork and headset

Base price includes single colour paint. Signature and custom paint options are extra.

With these frames being built to order, there is a wait period. Current wait time is approx. 3 months for a DSS4, but please enquire to confirm as this can fluctuate.

All our bikes come with access to discounted insurance with Yellow Jersey, so you can ride worry free (UK customers only).

Full details below and please get in touch to discuss your needs, or if you would prefer to simply place a deposit.

Race bred steel

You remember that scene from Days of Thunder where Harry’s building Cole’s race car? Well that’s what its like every time we build one of these! The DSS4 uses the most advanced steel tubing, the worlds finest frame finishing components and the excellent Columbus Futura fork. Building into an extremely capable steel race machine, ready to thrash it out at the pointy end of any race, or push hard on a fast road ride.

The bike has been race tested under the legs of Kibosh Racing, grabbing wins and podiums, with team members wowing spectators with the bikes incredible handling. Here’s what Josh Greet, Kibosh Racing Chief had to say about his own DSS4 machine:

“I am cornering twice as fast as I used to with the bike giving me a shit tonne of confidence. It feels so planted at all times. No skipping rear end whilst sprinting, just going forward very quickly.”

I think “twice as fast” may be a slight exaggeration, but you get where he’s going!

The frame is based around the incredible Columbus HSS tube set, Columbus’s ultra modern, hydro formed, oversized tubing. It builds into a stiff, direct frame, but never loses that steel feel and the confidence that brings. Something that will gain you many more seconds than simply counting grams.

Featuring an oversized opposed oval down tube, a heavily ovalized top tube and beautifully smoothed in wide set seat stays, putting stiffness where it’s needed. It makes an ultra modern frame, all with that feel of a finely tuned steel machine.

Finished with silver brazed, stainless steel braze on’s and bosses, including dead ended bottle bosses to reduce water ingress. These hidden details make sure your frame is ready to go season after season…

Available in both calliper and disc braked versions.

Frame tubing Columbus HSS // Fork Columbus Futura // Headset Integrated // Bottom bracket 68mm BSA // Seat tube 27.2mm seat post/31.6mm front mech band // Weight From 1700g // Calliper tyre clearance 28c // Disc tyre clearance 28c

Complete Spec's

We've carefully selected a build spec to bring the best out of the DSS4 whatever your budget is. Choose from these, or of course we can always go custom to get things just how you want them....

Prices below include base paint option and are based on our standard sizes.

Stem length, handlebar width, crank length and gearing will be specified to your fit/needs.


Groupset: Shimano 105

Wheels: Hunt 34 Aero Wide

Tyres: Schwalbe One Peformance RG

Tubes/Tubeless: Tubes

Headset: Columbus

Bars: Deda Zero1 RHM

Stem: Deda Zero2

Seatpost: Deda Zero2

Saddle: Pro Griffin Crmo

Bar Tape: Velox High Grip

Ultegra Di2

Shimano Ultegra Di2

Hunt 40 Carbon Aero Disc

Schwalbe One Peformance TLE



Deda Zero2 RHM

Deda Zero2

Deda Zero2

Pro Griffin Gel

Velox High Grip

Dura Ace Di2

Shimano Dura Ace Di2

Chris King ARD 44

Schwalbe Pro One Evo TLE



Columbus Trittico

Columbus Trittico

Columbus Trittico

Pro Griffin Team

Zipp Service Course

Geometry and fit

DSS4 steel road bike geometry table


Still want more

Anything else, get in touch

Build experience

Your personal specification sheet

We work closely with you in the realisation of you DSS bike and all builds get a personal specification sheet. This allows us to keep track of any custom extras you may require and allows you to see your custom sizing, so you know exactly what you are ordering. This also works as a great tool for us to discuss and finalise any custom paint designs.

From our customers

I am cornering twice as fast as I used to with the bike giving me a shit tonne of confidence. It feels so planted at all times. No skipping rear end whilst sprinting, just going forward very quickly

Josh Greet - Kibosh Racing Chief

I have ridden and raced a mix of steel and carbon bikes over the past 30 years. From my prized steel Robert Millar Peugeot in 1984 to various carbon rigs including the notable Cervelo RS frame which I raced extensively prior to Tom's build. In my experience to date, the Donhou HSS Columbus steel is hugely more responsive when racing and training than any carbon bike. The DSS4 is stiff, light and built to race crits and longer road races, both of which I have testament of last year. Yes it carries a tad more weight than carbon, however, this is offset in spades by the certainty it gives you in full flight, cornering and over the longer distance road races.

Rob Saunders - Kibosh Racing
DSS4 // Race bred steel

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