The Grands Prix Cyclistes in Québec on 11 September and Montréal on 13 September are the only WorldTour races held in the Americas. In 2026 they also work as a rehearsal for the World Championships, run on the same Mont Royal roads a week later. Lidl-Trek arrives with the Madone SLR Gen 8. That makes this a sensible week to look at the used Trek Madone market, because the Madone is now Trek's only carbon race frame rather than one half of a two bike range.
TL;DR
- Gen 8, launched in 2024, absorbed the Émonda. Trek went from two carbon race frames to one.
- Trek claims 796 g for a Gen 8 SLR frame in size M/L, around 320 g less than Gen 7.
- Gen 7 (2022) introduced the IsoFlow seat tube and the integrated cockpit. Gen 6 (2019) still used adjustable IsoSpeed.
- Pre-owned supply is concentrated on Gen 7 and Gen 8, in both SL and SLR carbon grades.
- Cockpit size, carbon condition and gearing decide whether a used Madone suits you. The generation badge does not.
Why the Canadian circuits explain the current Madone
The Montréal circuit is 13.4 km with 269 m of climbing per lap, covered 16 times. Organisers extended it by 1.1 km for 2026 so that it matches the finishing laps of the Worlds. The climbs are Côte Camillien-Houde, Chemin de Polytechnique and Avenue Pagnuelo, and the finish on Avenue du Parc rises.
Québec is shorter, around 12 km, also 16 laps, built around the short Côte de la Montagne and an uphill run to the line in the old town.
Neither circuit is long enough for frame weight to settle the race. Neither is flat enough to ignore it. That middle ground is the brief Trek wrote for Gen 8, and it is the same brief most riders have on their local roads.
The Madone lineage, in short
Gen 6, 2019 to 2022
Adjustable IsoSpeed at the seat tube, rim and disc versions, and more weight than anything that followed. It is interesting now mainly as a cheap route into an aero frame. Supply has thinned out.
Gen 7, 2022 to 2024
Trek replaced the IsoSpeed mechanism with IsoFlow, an open section in the seat tube that saves weight and manages the air behind the rider. Gen 7 also brought new tube profiles, a one piece bar and stem, and clearance for 28 mm tyres. It remains a fast bike.
Gen 8, 2024 onward
New tube shaping that Trek calls Full System Foil, a revised IsoFlow with more vertical compliance, a T47 bottom bracket, a UDH rear dropout and clearance for 32 mm tyres. The claimed 796 g frame in M/L is what let Trek retire the Émonda from its carbon race range.
SL or SLR
Both share the same shapes and the same geometry. The difference is the carbon. SLR uses Trek's 900 Series OCLV, SL uses 500 Series, and the SL frame comes in heavier for an identical silhouette.
For most riders, an SL with a healthy groupset and decent wheels is the better buy than an SLR with a tired one. If your riding is dominated by long climbs and you genuinely count grams, the SLR premium starts to make sense.
Three things to check on a used Madone
1. The cockpit. Gen 7 and Gen 8 use an integrated bar and stem. Changing width or reach means buying another one, and it costs real money. Ask for the stamped size before agreeing anything, then compare it with the position you already ride. The Trek road bike size guide is a reasonable starting point if you are unsure of your frame size.
2. The seat tube area. The IsoFlow opening is structural. Look closely at the seat tube, the seatpost clamp and the top of the seat stays for scuffs, cracks or paint lines. Carbon damage hides well in photographs.
3. Gearing and wheels. The model name says nothing about the ratios fitted. A 52/36 with an 11-30 cassette and a 54/40 with an 11-28 can sit on the same frame. For repeated steep ramps late in a ride, the first is easier to live with. Wheel tier matters too, since Bontrager Aeolus Elite, Pro and RSL are three different weight and price classes.
What is actually on the pre-owned market
Most of what circulates is Gen 7 and Gen 8, in SL and SLR trim, with the occasional frameset. Our Trek selection generally holds both generations, and the wider road bike listings are where to weigh a Madone against a Tarmac or an Aeroad at similar money.
The Émonda did not vanish from the used market simply because Trek stopped building it. Émonda SLR frames from the 2022 to 2024 period are still findable, and for a rider who climbs more than they sprint that is a rational alternative to a Gen 8.
If you want race history rather than race paint, the bikes in our Team selection come to us directly from World Tour squads. Sizes are limited by nature, so knowing your fit numbers in advance helps. Our guide on how to buy a pre-owned World Tour bike covers the inspection side in more detail.
For context on the rest of the peloton, we looked at what every team will ride in Montreal and at what repeated punchy climbs ask from a bike.
Every bike we list has its condition verified by our mechanics and ships with a one year warranty, and the transaction itself is covered by Bikeroom Rider Protection.
FAQ
Is a Gen 7 Madone much slower than a Gen 8?
Trek's claim is that Gen 8 matches Gen 7 aerodynamically while weighing considerably less. On flat roads the two are close. On repeated climbs the weight shows, although the gap between complete bikes is usually smaller than a full bottle of water.
Was the Émonda discontinued?
Yes, in the carbon race range. Gen 8 was designed to cover both jobs, so Trek stopped the standalone Émonda when it arrived.
Does the Madone take 32 mm tyres?
Gen 8 does. Gen 7 is rated to 28 mm. For anyone riding rough surfaces or using one bike through the winter, that difference matters more than the frame weight.
Which generation suits punchy circuits like Mont Royal?
Either can work. Gen 8 if the budget is there and you want the lighter frame, Gen 7 if you would rather spend the difference on wheels and gearing. On that kind of terrain, rims around 45 to 50 mm and a bailout sprocket do more for most riders than 300 g off the frame.
The short version
Buying a used Trek Madone is now one decision rather than a choice between aero and lightweight. Gen 8 is the lighter, more versatile frame, with room for 32 mm tyres. Gen 7 is the cheaper way onto the same platform and still quick. Check the cockpit size, the carbon around the seat tube and the gearing before you worry about the badge. Watching Lidl-Trek on the Québec and Montréal circuits this week is a good way to see what the platform was built for.
Unsure about Madone sizing or gearing before you buy? We are happy to help. Talk to our concierge.
Sources: Cyclingnews, Grand Prix Cycliste de Montréal 2026; Grands Prix Cyclistes de Québec et Montréal, official site; BikeRadar, Trek Madone 7 SLR Gen 8 review; Cyclingnews, the new eighth generation Trek Madone; Velo, Trek launches the Madone with IsoFlow seat tube.
