Where can I find the service manual for details like routing instructions, light mounting, cockpit swaps, and more?
A. You can find detailed setup and service information in the Domane Service Manual here.
Service ManualFAQ
How do the new Gen 5 Domane SL and SLR compare to Gen 4?
The new Gen 5 Domane SL and SLR are lighter, simpler, and more refined, while keeping the comfort, confidence, and speed riders loved about the previous generation. Gen 5 keeps the same Road Endurance Geometry for comfort and control on long rides, and it’s just as fast as Gen 4 — in fact, testing shows it’s 1–2 watts faster.
Key updates include:
- Lighter design – The SLR frameset is 305g lighter than the previous generation (unpainted, SRP weights)
- New +20mm Domane Riser Bar – Featured on all models except Domane SLR 9 AXS 1x, this bar helps create a more relaxed riding position for long days in the saddle.
- New round 27.2mm carbon seatpost – Adds compliance to help absorb road chatter.
- No IsoSpeed – Gen 5 removes IsoSpeed for a simpler, lighter design while still delivering a very comfortable ride. Testing shows it stays within 5% of the previous generation for vibration absorption - Trek's full bike comfort metric - when comparing with the spec 35mm tires. You can read more in the Domane Whitepaper (link below)
- More tire clearance – Fits up to 40mm tires for added comfort and all-road capability.
- More mounts – Cleanly fits the Trek Adventure Frame Bag and Triangle Bag, in addition to top tube bag and fender mounts.
- Updated ride feel – Delivers a snappier, more performance-oriented ride feel while maintaining the confidence and control Domane is known for.
- Modern compatibility features – Includes UDH, a removable front derailleur hanger, the RCS headset system, 1x compatibility, Switch Pro chamfered thru-axles, and RSL Aero Bottle compatibility.
- Streamlined size range – Available in six frame sizes.
Domane Whitepaper
How much does the Domane SLR frameset weigh? How much does the Domane SL frameset weigh?
The Domane SLR frame weighs 835g and the fork weighs 389g. The Domane SL frame weighs 1055g and the fork weighs 442g.
What’s new about the Bontrager Riser Road Handlebar?
The new handlebar allows riders to be in an even more relaxed riding position without requiring a positive stem. It offers:
- 20mm of rise
- Shorter reach -70mm
- 9 degrees of flare for easier access to the drops and more control while in the drops. Translates to 4 cm wider drops than the Controls Width.
- Carbon Pro Only - 4 total IsoZone vibration dampening pads for on top of the bar, on the hoods, and in the drops.
If I want a lower or more aero riding position, do I need to use the Bontrager Riser Road Handlebar?
No. Depending on your fit and riding preferences, you can use a traditional road handlebar or an aero option like the Trek Aero RSL Road Integrated Barstem found on Madone.
Is the new Domane SL and SLR compatible with the Trek RSL Aero bottles?
Yes.
Is the new 27.2 round seatpost available in multiple sizes?
No, it’s available in one length (330mm), with two offset options (5mm and 25mm). When used on this generation of Domane, those offsets translate to 0mm and 20mm.
What is the maximum seatpost length I can run in each frame size?
400mm for every size.
What is the max chainring size?
Shimano 2x – 55T
Shimano 1x – 50T
SRAM 2x – 50T
SRAM 1x – 50T
What’s the max rotor size?
The maximum rotor size is 180mm in the front and 160mm in the rear.
Does Gen 5 Domane have internal frame storage?
No, we focused on a lighter-weight design and added more frame bag mounting options for easy, accessible gear storage.
Is Domane compatible with electronic drivetrains only?
Domane SLR is electric only. Domane SL is compatible with both electronic and mechanical drivetrains.
What bottom bracket standard does Domane use?
Gen 5 Domane uses a T47 bottom bracket.
How do the new sizes compare to the old sizes?
We cover the same range of rider sizes that were on the previous gen 47-62 Domane with the new Gen 5 Domane. This table is a quick-glance way of transferring old Domane sizes to new. In between sizes? Size down for a more aggressive fit, or size up for a more relaxed fit.
| XS | S | M | ML | L | XL | |
| 47 | ||||||
| 49 | ||||||
| 50 | ||||||
| 52 | ||||||
| 54 | ||||||
| 56 | ||||||
| 58 | ||||||
| 60 | ||||||
| 62 |
What’s the maximum tire clearance?
Gen 5 Domane fits up to 40mm tires, measured with 4mm of clearance between the tire and frame.
Does the removable switch lever come with the bike, or do I buy these as an after-market part?
The switch lever is for sale separately as an aftermarket part.
What’s the headset compatibility?
Gen 5 Domane is compatible with the RCS Pro, RCS Race, and RCS Universal headset bearing top covers. See the service manual for part numbers and compatibility details.
Can I ride Domane on gravel?
Heck yeah! Domane is an all-road bike, which means it’s designed to handle everything from smooth pavement to rough roads and light crushed gravel.
How many water bottles can I fit inside the frame?
Two bottles. See the service manual for bottle size compatibility by frame size.
How many mounts for bags and accessories are there on each frame size?
Domane has mounts for a frame bag, triangle bag, and top tube bag on all sizes except XS. Size XS is compatible with a triangle bag and top tube bag only.