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Berria Belador Pro vs Trek Madone SL Gen 8
Pick up to 4 bikes. Rows line up component by component. Highlighted rows differ, and green marks the best value where lower or higher is clearly better.
Key differences
- The Trek Madone SL Gen 8 starts €200 cheaper (€2,799 vs €2,999 for the Berria Belador Pro).
- Our verdict scores both 78/100 overall.
- The Berria Belador Pro comes in 5 sizes, the Trek Madone SL Gen 8 in 6.
Berria Belador Pro
Trek Madone SL Gen 8
| BerriaBelador Pro | TrekMadone SL Gen 8 | |
|---|---|---|
| Overview | ||
| Brand | Berria | Trek |
| Build | Belador Pro Force AXS PWM | Madone SL 7 Gen 8 |
| Build notes | Top Pro build, with a crank power meter. Price for the 'Collection' paints (Black-White Pearl-Red Racing or Black-Liquid Metal); €4,139 with an IRIS Select or custom paint. Model code PT27.10.07. | Claimed weight with TLR sealant, no tubes. Trek DE lists two run-out colours (Matte Lavender Haze/Deep Smoke, Gloss Crystal White/Matte Deep Smoke) at €5,999. Launch MSRP in June 2024 was US$6,500 / £6,000 / €6,500 (Escape Collective). Trek also sells this build as the 'Madone SL 7 Gen 8 - The First 50 Replica' paint edition (US$6,599.99, £5,000, €5,949). No pedals. |
| Price (MSRP) | €3,844€3,844€3,844 | €5,949$6,000£5,000 |
| Bike weight | — | 7.87 kg17.4 lb |
| Weight measured on size | — | ML |
| Model year | 2027 | 2027 |
| Generation | Belador 6G | Gen 8 |
| Launched | 2024-10 | 2024-06 |
| Discipline | Aero road | Aero road |
| UCI legal | Not stated | Not stated |
| Verdict (out of 100) | ||
| Overall score | 78 | 78 |
| Aero | 76 | 76 |
| Frame | 76 | 72 |
| Components | 76 | 62 |
| Fit | 72 | 80 |
| Practicality | 66 | 76 |
| Price | 100 | 100 |
| Weight | — | 79 |
| Frame & fork | ||
| Frame material | Carbon (HM2X: Toray T700 and T800 intermediate-modulus fibre; triple monocoque with EPS cores) | 500 Series OCLV Carbon |
| Fork material | Carbon (Belador Blade 6, internal routing) | Carbon (Madone Gen 8 full carbon fork, tapered carbon steerer) |
| Frame weight | — | 1,054 g2.32 lb |
| Fork weight | — | 363 g12.8 oz |
| Weight measured on | — | Size ML, painted (frame only and fork only), as stated by Trek |
| Max system weight | — | 125 kg275.6 lb |
| Frame sizes | 48, 51, 54, 57, 60 | XS, S, M, ML, L, XL |
| Colours | Black-White Pearl-Red Racing, Black-Liquid Metal; IRIS Select paints Miami Blue-Skyfall-Red Racing and White Pearl-Chalk Grey-Red Racing; custom paint | US (2026-10): SL 7 in Gloss Fury Red/Matte Deep Smoke or Era White; SL 6 AXS in Gloss Dark Star/Matte Deep Smoke or Matte Cobalt Blue/Trek Black/Living Coral; SL 5 in Gloss Dark Star/Matte Deep Smoke or Era White; frameset in Gloss Dark Star/Matte Deep Smoke (earlier Dark Star and Crimson framesets on closeout). Trek GB and DE also list Matte Lavender Haze/Deep Smoke and Gloss Crystal White/Matte Deep Smoke in a few sizes. |
| Also available as | Belador BR (UHM3X carbon, lighter) and Belador Essential (HM2X carbon with a round seatpost and alloy cockpit) | Madone SLR Gen 8 (900 Series OCLV carbon, one-piece Aero RSL cockpit, electronic only); 'The First 50 Replica' paint edition of the SL 7 |
| Compatibility & standards | ||
| Brake type | Hydraulic disc, flat mount | Hydraulic disc, flat mount |
| Max rotor size | — | 180 mm |
| Wheel size | 700c | 700c |
| Max tire width | 32 mm | 32 mm |
| Bottom bracket standard | T47 | T47 threaded |
| Front axle | 12x100 thru-axle | 12x100 mm chamfered thru-axle (Bontrager Switch) |
| Rear axle | 12x142 thru-axle | 12x142 mm thru-axle (Bontrager Switch, removable lever) |
| Drivetrain compatibility | — | Electronic or mechanical routing (mechanical front derailleurs need a housing stop); 1x and 2x |
| Mechanical shifting possible | — | Yes |
| 1x compatible | — | Yes |
| Max chainring | — | 56T |
| Front derailleur mount | — | Braze-on; removable aero chainkeeper |
| Cable routing | Fully internal (Berria ICS2) | Fully internal through the RCS Headset System |
| Fit & adjustability | ||
| Cockpit | One-piece Avanforce Airone carbon bar and stem with ICS2 internal routing and GPS mount | Two-piece cockpit: Trek RCS Pro stem (-7°) with a 31.8 mm bar, Bontrager Aero Pro carbon on the SL 7 and Bontrager Comp alloy on the SL 6 AXS and SL 5; the one-piece Aero RSL bar/stem is available aftermarket |
| Standard stem and bar possible | — | Yes |
| Seatpost type | Belador 6 SP aero carbon seatpost, 0 or 20 mm offset | Madone aero carbon seatpost, 0 mm offset, with IsoFlow seat tube; reversible wedge, short and tall seat masts |
| Fit notes | — | Trek's Road Race geometry, the same table as the SLR. Stock stem length changes with frame size (80 mm on XS, 90 mm on S-M, 100 mm on ML-L, 110 mm on XL); bars are 35/38 cm to 41/44 cm control/drop width on the SL 7 and 36/40 cm to 42/46 cm on the SL 6 AXS and SL 5, all with 80 mm reach. Trek lists saddle rail height ranges for the short and the tall seat mast. |
| Aerodynamics | ||
| Manufacturer aero claims | — | Trek's Gen 8 tunnel figures (about level with the Madone Gen 7 and 11.3 W faster than the Émonda at 35 km/h) were run on the SLR with its RSL Aero bottles; the SL shares the tube shapes but ships with a two-piece cockpit and without the aero bottles, which Trek sells separately. |
| Testing method | — | Wind tunnel with a pedalling mannequin at 35 km/h plus CFD, in the SLR configuration (Trek's Madone aerodynamics page) |
| Tube profile | Smaller tube sections with less frontal area ('Aero Shape Efficiency' shaping) | Full System Foil |
| Travel, maintenance & warranty | ||
| Headset bearings | Oversized semi-integrated (O2HS), 1-1/2 in upper and lower | RCS Headset System (RCS Pro) |
| Derailleur hanger | UDH (SRAM Universal Derailleur Hanger) | UDH (SRAM Universal Derailleur Hanger) |
| Proprietary parts | One-piece Avanforce Airone cockpit, Belador 6 SP seatpost | RCS Pro stem and headset top cap, Madone aero seatpost and seat mast, aero chainkeeper |
| Frame warranty | 8-year limited frame warranty if the bike is registered within 30 days (otherwise the legal warranty only); 3 years on the fork and on Avanforce bars and seatposts; racing use voids the warranty | — |
| Sold via | Online at berriabikes.com and through Berria dealers | Trek retailers and trekbikes.com; not offered through Project One |
| Drivetrain | ||
| Groupset | SRAM Force AXS E1 | Shimano Ultegra Di2 R8100 |
| Launched | 2025 · current generation | 2021 · current generation |
| Speeds | 12-speed | 12-speed |
| Electronic | Yes | Yes |
| Drivetrain | 2x | 2x |
| Battery | — | Central battery (Shimano BT-DN300) |
| Shifters | SRAM Force AXS E1 | Shimano Ultegra Di2 R8170 |
| Notes | — | Trek also lists R8171 |
| Crankset | SRAM Force AXS E1 Power Meter | Shimano Ultegra R8100 |
| Chainrings | 48/35 | 50/34 |
| Crank lengths available | 170, 172.5 or 175 mm | 160 mm (XS-S), 165 mm (XS-ML), 170 mm (M-XL), 172.5 mm (L-XL), as listed by Trek |
| Power meter | SRAM Force AXS E1 Power Meter | — |
| Launched | 2025 · current generation | — |
| Type | Integrated in crankset | — |
| Bottom bracket | SRAM DUB T47 | Praxis T47 |
| Standard | T47 | T47 threaded, internal bearing |
| Front derailleur | SRAM Force AXS E1 | Shimano Ultegra Di2 R8150 |
| Notes | — | Braze-on, down swing |
| Rear derailleur | SRAM Force AXS E1 | Shimano Ultegra Di2 R8150 |
| Max cog | — | 34T |
| Cassette | SRAM Force XG-1270 E1 | Shimano Ultegra R8101 |
| Range | 10-36 | 11-34 |
| Speeds | 12-speed | 12-speed |
| Chain | SRAM Force E1 | Shimano CN-M8100 |
| Brakes | ||
| Brake calipers | SRAM Force AXS E1 | — |
| Type | Hydraulic disc | — |
| Rotors | — | Shimano RT-CL800 |
| Front rotor | — | 160 mm |
| Rear rotor | — | 160 mm |
| Mount | — | Center Lock |
| Wheels & tires | ||
| Wheelset | Vision TC45 | Bontrager Aeolus Pro 51 |
| Front rim depth | 45 mm | — |
| Rear rim depth | 45 mm | — |
| Internal rim width | 23 mm | — |
| Material | Carbon | OCLV Carbon |
| Tubeless ready | Yes | Yes |
| Freehub options | — | Shimano 11/12-speed |
| Notes | Center Lock rotor mount | — |
| Tires | Vittoria Corsa N.EXT | Bontrager Aeolus Pro |
| Tire width | 30 mm | 28 mm |
| Set up tubeless | Yes | — |
| Type | — | Tubeless Ready, with Bontrager TLR sealant |
| Casing | — | 120 tpi, aramid bead |
| Cockpit | ||
| Handlebar | Avanforce Airone | Bontrager Aero Pro |
| Type | One-piece carbon bar and stem | Drop bar, 31.8 mm clamp, Di2 routing |
| Integrated stem | Yes | — |
| Widths available | 380x90, 400x100, 400x110, 420x110 and 420x120 mm (width x stem length) | 35/38 cm (XS), 37/40 cm (S), 39/42 cm (M-L), 41/44 cm (XL), control/drop width |
| Bar reach | — | 80 mm |
| Bar drop | — | 124 mm |
| Cable routing | Fully internal (ICS2) | — |
| Material | Carbon | OCLV Carbon |
| Weight | 290 g10.2 oz | — |
| Notes | Berria's own component brand; GPS mount included. Weight is Berria's claim from the Belador page; it doesn't say which size. | — |
| Stem | — | Trek RCS Pro |
| Stem length | — | 80 mm (XS), 90 mm (S-M), 100 mm (ML-L), 110 mm (XL), -7° |
| Saddle & seatpost | ||
| Saddle | Fizik Vento Argo X5 | Bontrager Aeolus Elite |
| Saddle width | 140 mm | 145 mm |
| Saddle length | 265 mm | — |
| Rails | Steel, 7x7 mm | Austenite |
| Seatpost | Berria Belador 6 SP | Trek Madone aero carbon seatpost |
| Offset / setback | 0 or 20 mm | 0 mm |
| Material | Carbon (UD) | Carbon |
| Notes | Aero seatpost; Berria quotes 87 g on one part of its Belador page and 90 g on another. | Short length |
| Bar tape | — | Trek EcoTack |
| Notes | — | Trek also lists gel cork tape |
| Geometry (smallest – largest size) | ||
| Sizes | XS (51), S (53), M (55), L (57), XL (59) | XS, S, M, ML, L, XL |
| Rider height min | 155–192 cm5′1″–6′4″ | 143–188 cm4′8″–6′2″ |
| Rider height max | 165–192 cm5′5″–6′4″ | 158–199 cm5′2″–6′6″ |
| Stack | 518–590 mm20.4–23.2″ | 507–610 mm20–24″ |
| Reach | 369–418 mm14.5–16.5″ | 370–402 mm14.6–15.8″ |
| Seat tube angle | 73.7–74.9° | 73.4–73.8° |
| Head tube angle | 70.5–73° | 71.6–73.9° |
| Head tube length | 110–180 mm4.3–7.1″ | 100–201 mm3.9–7.9″ |
| Effective top tube | 510–590 mm20.1–23.2″ | 517–584 mm20.4–23″ |
| Seat tube length | 445–565 mm17.5–22.2″ | 404–609 mm15.9–24″ |
| Chainstay | 405 mm15.9″ | 410–412 mm16.1–16.2″ |
| Wheelbase | 970–1,018 mm38.2–40.1″ | 971–1,007 mm38.2–39.6″ |
| BB drop | 72–74 mm2.8–2.9″ | 68–72 mm2.7–2.8″ |
| Fork length | 375 mm14.8″ | — |
| Fork offset | 42 mm1.7″ | 40–50 mm1.6–2″ |
| Trail | 62–83 mm2.4–3.3″ | 57–62 mm2.2–2.4″ |
| Front centre | — | 572–604 mm22.5–23.8″ |
| Standover | — | 704–863 mm27.7–34″ |
| Wheel size | 700c | 700c |
| Stem length | — | 80–110 mm3.1–4.3″ |
| Handlebar reach | — | 80 mm3.1″ |
Geometry overlay
Pick a size for each bike to see frames and arm-pad ranges on top of each other.
Drawn to scale (how to read it).