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Trek launches new, lighter Domane endurance road bike and ditches front IsoSpeed system

Trek claims the fourth generation Domane is faster and more capable than ever before, and the frameset is 300g lighter than the previous version

Trek has launched an all-new Domane, the fourth generation of its most versatile endurance road bike platform. Trek claims the new bike is more aerodynamic and, like the radical new Trek Madone there's a significant frameset weight saving of 300g thanks to a simplified IsoSpeed decoupler system.

2022 Trek Domane SL

The Domane is Trek's endurance road bike designed for long days in the saddle when ride quality is the number one priority. There are three new frame variations, the SL, SLR and the race-focussed RSL, with the latter being raced to victory at Paris-Roubaix Femmes earlier in the year. 

The general gist is that the new frames (and full bike builds) are lighter thanks to ditching the front IsoSpeed system, and at the rear the IsoSpeed is now simplified and non-adjustable. Trek says the bike is also faster thanks to new tube shaping and an integrated cockpit, and there are additional mounts such as a top-tube bag mount to make the new Domane even more versatile. Let's take a closer look at some of the facts and figures...

Domane SL and SLR

2022 Trek Domane Sl7 etap build grey

> Best endurance road bikes 2022

Last year we reviewed the outgoing third generation of the Trek Domane, and there was a lot to like; however, Mat's main drawback which prevented it from scoring even higher was the weight... well, the fourth generation aims to solve that in style with significantly lighter bike weights: up to 700g on SLR builds and 300g on SL builds. 

2022 Trek Domane SL9 seatpost clamp

Much of that weight saving (~300g) has come from the frame itself, with the complete removal of any IsoSpeed suspension/compliance system at the front end, and a simplified system at the rear.

Fans of the radical Isoflow (essentially a gaping hole) on the radical new Madone will be disappointed, as IsoSpeed lives on at the rear; however Trek has opted for a lighter single-setting IsoSpeed setup which has been tuned to each bike size. According to Trek, this is because very few riders were actually using the previously adjustable system. 

2023 Trek Domane isospeed rear

The SL and SLR builds share the same "Endurance" geometry, which is relaxed for a road bike with a tall headtube and short reach. The RSL model gets more aggressive geometry (more on that in a minute). 

2023 Trek Domane SL SLR geometry

> How to read a bike geometry table - The numbers made easy!

The SL and SLR not only differ from each other in the builds that they are offered in, but also the frame material. Both are carbon, but the SLR uses Trek's 800 Series OCLV carbon, whereas the cheaper SL model uses a lower spec 500 Series OCLV frame.

2023 Trek Domane SLR front on view cockpit

Both frames are identical in terms of mounts and tyre clearance: up to 38mm without mudguards or 35mm with them.

Trek is often quite modest about its tyre clearances, so you might be wondering if you could use the bike for gravel: Trek says that the answer is yes, this is a bike that is more than capable of taking on the rough stuff, but that it is designed to be a "road first" bike, whereas the brand's Crockett gravel-specific range is designed for "gravel first".

2023 Trek Domane SLR lifestyle shot rear

> Gravel bike vs road bike: what’s the difference and which one is best for you?

With that in mind, the new Domane can be run with either a single or double chainring setup with 50T and 52/36T (min 46/33T) maximum chainring sizes respectively. Trek has doubled down on its threaded T47 bottom bracket as it attempts to standardise this across its range.

2022 Trek Domane SL6 blue fork

As well as "hidden" mudguard mounts, the Domane has room for two bottles in the main triangle as well as the addition of mounts to the top tube for a bento-style box or top tube bag. This is a bike that looks more than capable of hauling everything you need for single-day adventures.

2022 Trek Domane SL5 green storage

Like the previous Domane, the SL and SLR bikes get hidden storage in the downtube of the bike. There's also space for a BITS bag (Bontrager's internal storage solution) to store a spare tube, CO2 inflator/cartridge, and two tyre levers with space to spare, with the bottle cage then fitting on top of this.

Trek says the new bike has been developed using extensive CFD (Computational Fluid Dynamics) testing to make it more aerodynamic than the previous generation. There are no specific claims of just how much 'faster' it is, but the Kammtail Virtual Foil (KVF) tube shaping is reminiscent of the speed-focussed Emonda and Madone frames.

2022 Trek Domane SL7 grey

> Trek releases radical Madone SLR, its “fastest road race bike ever”

The new seat post is slimmer and also shares this Kammtail D-profile design, so you won't be able to swap it out for an alternative. This will be available in 5mm or 20mm setback options and in two lengths, 280 or 320mm.

2022 Trek Domane SL6 purple cockpit

To keep things looking neat at the front end there's an all-new 'RCS Pro' integrated stem that shares compatibility across several of Trek's road models. This keeps the cables tucked out of sight, while also allowing riders to swap stem sizes without having to remove any brake hoses or shift housings. It's available in both -7 and +7 degree rise options.

Trek says that the new frame is compatible with electronic and mechanical groupsets (Excluding Sram mechanical front mechs) 

Domane RSL

2022 Trek Domane RSL

The Domane RSL is designed for speed, and has already been put through its paces at this year's classics races including a win for Elisa Longo Borghini at the 2022 Paris-Roubaix Femmes. The RSL features the same 800 Series OCLV carbon as seen on the SLR, but there are plenty of differences:

2023 Trek Domane RSL geometry table
  • The RSL uses the more aggressive H1.5 geometry as found on the Madone
  • There is no internal storage in the downtube, saving 100g of frame weight
  • No mudguard mounts
  • 35mm tyre clearance rather than the 38mm found on the SL and SLR
  • Space for larger chainrings (2x 54/40, 1x 54T)
Best road bike tyres

> New Trek Domane breaks cover at Paris-Roubaix... and is instantly ridden to victory by Elisa Longo Borghini

The RSL frameset gets a claimed weight of 1.60kg in a size 56cm (0.90kg lighter than the SL model) but is only available to buy as a frameset rather than as a complete bike.

Builds, pricing and availability

Trek has released a huge list of builds to suit a range of budgets, and unlike some newly released bikes, we do expect to see them hitting the shops by the end of the month.  

2023 Trek Domane SL grey product shot

SL Frameset: The cheapest possible way of getting a new Domane is the SL frameset, which is priced at £2,700 and weighs 2.50kg.

SL5: The cheapest complete build (8.93kg) uses the 500 OCLV SL frame and costs £3,300. This is specced with Alloy Bontrager Paradigm SL wheels and Shimano's mechanical 11-speed 105 R7025 groupset.

SL6: This 8.90kg build is available with either the new Shimano 105 R7170 Di2 groupset (£4,400) or Sram Rival eTap AXS groupset (£4,800). 

SL7: The SL7 is available for either £6,400 with Shimano Ultegra R8170 Di2 (8.26kg) or for £7,250 with Sram Force eTap AXS (8.48kg). The SL7 models also benefit from carbon wheels in the form of Bontrager Aeolus Pro 37s. 

2023 Trek Domane SLR product shot green

SLR Frameset: The 800 OCLV frame starts at £4,500. Like the other builds it uses 100/142 x 12mm thru-axles and will take up to 160mm disc rotors.

SLR 6: Available with either Shimano R7170 105 Di2 (£7,000) or Sram Rival eTap AXS with a power meter (£7,500) and weighing 8.25kg, all of the SLR builds get carbon wheels and carbon bars. 

SLR 7: The SLR 7 with an Ultegra R8170 di2 groupset (£9,000) weighs in at 7.89kg, or 8.38kg for the Sram Force eTap AXS version with a power meter (£9,500) 

SLR 9: On  this high-end build, included are Bontrager Aeolus RSL 37 carbon wheels, Pirelli P Zero Race 30mm tyres, and the price tag is £12,000 with a Dura-Ace R9270 Di2 groupset (7.25kg) or £12,500 for Sram Red eTap AXS (7.80kg). 

Trek Domane 2022 from Paris Roubaix-1

RSL Frameset: We were slightly surprised to see that the RSL frameset has the same RRP as the SLR frameset (£4,500)

All of the complete bikes get a carbon seat post, and other than the SLR 9 come specced with 32mm Bontrager R3 Hard-Case Lite tyres, giving a good indication as to the bike's intended purpose. 

We have a new Domane on the way, so look out for a full review in the near future...

Jamie has been riding bikes since a tender age but really caught the bug for racing and reviewing whilst studying towards a master's in Mechanical engineering at Swansea University. Having graduated, he decided he really quite liked working with bikes and is now a full-time addition to the team. When not writing about tech news or working on the Youtube channel, you can still find him racing local crits trying to cling on to his cat 2 licence...and missing every break going...

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matthewn5 | 1 year ago

Seriously heavy, very ugly, and rather overpriced. I'll be keeping well clear.

kil0ran | 1 year ago

Nice to see mudguard mounts with decent clearance still available on a high end frame. Wish I'd known about them before I bought my Defy Advanced. On the plus side, the lack of provision on the Giant means I'll need a winter bike

Patrick9-32 | 1 year ago
1 like

Am I the only one who only just realised Domane and Madone are anagrams?

Jamie Williams replied to Patrick9-32 | 1 year ago

And Emonda 🙂

BalladOfStruth replied to Jamie Williams | 1 year ago

Which is probably why I can never remember which one's which.

bendertherobot replied to BalladOfStruth | 1 year ago

BalladOfStruth wrote:

Which is probably why I can never remember which one's which.

It's actually pretty clever language, beyond the anagrams.

Emonda - French, shave weight (climbing one)

Domane - Latin, the King's Crown (one ride to rule them all? The do it all one)

Madone - no idea, I just think of it as the Mad One  4

mark1a replied to bendertherobot | 1 year ago

I think the Madone was named after the Col de la Madone, Lance Armstrong's former local training climb. 

Rendel Harris replied to mark1a | 1 year ago

mark1a wrote:

I think the Madone was named after the Col de la Madone, Lance Armstrong's former local training climb. 

It was indeed and the others then followed anagramatically. A climb I can thoroughly recommend, in sight of the Med all the way and you can finish with an evening in Nice!

jaymack replied to Patrick9-32 | 1 year ago

But neither of them are an anagram of 'we shafted Greg Le Mond because it was good for our profit margin'.

Secret_squirrel replied to jaymack | 1 year ago

To be fair if they named bikes after people Trek have shafted they have to produce a lot more bike models. 

bendertherobot replied to jaymack | 1 year ago

jaymack wrote:

But neither of them are an anagram of 'we shafted Greg Le Mond because it was good for our profit margin'.

The Lemond Zurich was the first "good bike" I owned. It was only Tiagra and some wacky Bontrager wheels (which are still on my brother's bike). 

But I reckon that frameset would still give today's frames a run for their money

Surreyrider | 1 year ago

With pedals, many of these new lighter Domane models still weigh over 9kg apparently. I do wish  journalists would actually look even a little beyond the PR being fed to them (in this case the lighter weight message). The last Domane was obese and this version is just bordering on it after a crash diet. 

KDee | 1 year ago

3300 quid for mechanical 11 speed 105? Good grief! 

Secret_squirrel replied to KDee | 1 year ago

And weights in the 8-9kg range. WTAF? 

Surreyrider replied to Secret_squirrel | 1 year ago

I just bought a Giant Defy with 12-speed Ultegra Di2. Weighs 7.7kg without pedals. It's also £1,400 cheaper than the much heavier new Domane equivalent at £6,400. 

Velophaart_95 replied to KDee | 1 year ago

Exactly!! I bought the SL5 rim braked 105 a few years ago, £1,800.

bendertherobot replied to Velophaart_95 | 1 year ago

Velophaart_95 wrote:

Exactly!! I bought the SL5 rim braked 105 a few years ago, £1,800.

And I bought the SL5 disc at £2400. But, that's inflation and (other things) for you.

As to the comments about weight, I was mis-sold a 56. Tried to get on with it. Couldn't. Looked for ages to find an SL5 disc. Found one a few weeks back. With Aeolous 5 Pro 50mm carbon wheels (new). Got it for £2100. Been looking ages because of all the bikes I've owned it's the one I liked most. Couldn't care less about the weight. As Maverick would say, it's all about the pilot.

KDee replied to Velophaart_95 | 1 year ago

I just find that 3300 pounds remarkably expensive. Last year I bought a Scott Addict 10 Disc, that's mechanical Ultegra. It was 2899 Euros, so about 2500 GBP. Granted it doesn't have an iso whatever (or any mudguard mounts) but looks like great value for money by comparison. Are bikes really that much more expensive this season? 

bendertherobot replied to KDee | 1 year ago

KDee wrote:

I just find that 3300 pounds remarkably expensive. Last year I bought a Scott Addict 10 Disc, that's mechanical Ultegra. It was 2899 Euros, so about 2500 GBP. Granted it doesn't have an iso whatever (or any mudguard mounts) but looks like great value for money by comparison. Are bikes really that much more expensive this season? 

Yes. A Ribble SL Disc is £2699, Canyon SL7 is £2699 (and these are your 'bargain' bikes). Defy's a hard one as it's tricky to decide whether you go advanced or pro, but the pro is £2999. Synapse Carbon 3 is £3200 (weird electric integration) and the Roubaix Sport is £3100. A smattering, and spec varies, but yes, mechanical 105 can be quite expensive now. 

IanMSpencer replied to KDee | 1 year ago
1 like

Loss of discounts due to Covid demand, exchange rate falls, duties, transport costs at least 10 fold increase in container costs, inflation, increased costs of tech of components, natural tendency of suppliers wanting to up their list price, plus Trek have their brand surcharge.

There's a lot of stuff adding together.

I've brought forward a few non-bike purchases on the expectation of significant price increases. Got enough bike for the foreseeable future.

Eric1939 replied to IanMSpencer | 1 year ago
1 like

As much as I loved my (now stolen) upgraded 2013 Domane, £6,400 lots for new SL7. Just acquired new Orro Gold 12 sp. Di2 Ultegra, upgraded with Bontrager Isospeed carbon bar n Roval carbons for £5,200, weight similar, fantastic comfortable ride.

richliv replied to Eric1939 | 1 year ago
1 like

My 2013 Domane 4.5 cost £1800 with a bit of discount, ultegra mostly plus 10 speed. It's been a great bike for nearly 20K miles now so about £180 a year, then. Got to say, a near 400% increase is really a lot but it's also a lot of bike - but its a sellers market too up to now where they are priced according to what the market will bear not any other metric. Let's see what happens in the forthcoming economic meltdown. Prices might go down. Or, if the £ is weak, up.

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