Trek Madone SLR 7 eTap Gen 6 Road Bike – 2021, 58cm

Experience the pinnacle of aero road performance with the 2021 Trek Madone SLR 7 eTap Gen 6. This is the bike that has been at the forefront of the pro peloton, now available in a size 58cm for taller riders who demand uncompromising speed and cutting-edge technology. Built around Trek’s lightest-ever 800 Series OCLV Carbon frame and featuring the fully wireless precision of a SRAM Force eTap AXS drivetrain, this machine is engineered to dominate everything from local criteriums to epic gran fondos. It’s not just a bike; it’s a statement of intent.

Frame and Fork

• Frame: The heart of the Madone is its 800 Series OCLV Carbon frame, the lightest laminate Trek has ever produced . It features KVF (Kammtail Virtual Foil) tube shaping, which provides an aerodynamic advantage without the handling penalties of deeper sections . The defining feature is the Adjustable Top Tube IsoSpeed, a decoupler that allows you to fine-tune vertical compliance, effectively smoothing out rough pavement without sacrificing the bike’s efficiency or aero profile .

• Fork: The matching Madone KVF full carbon fork is designed with a tapered steerer for pinpoint steering precision and seamlessly integrates with the frame’s cable routing for a clean, aero front end .

• Rider-First Details: The frame utilizes a T47 threaded bottom bracket, offering the durability and ease of maintenance of a threaded interface with the press-fit aesthetic . It’s also compatible with Trek’s DuoTrap S speed/cadence sensor for clean data integration .

Drivetrain

• Shifting: At the core of this build is the SRAM Force eTap AXS 12-speed wireless electronic groupset . Shifting is crisp, instantaneous, and fully customizable via the AXS app. The absence of cables provides a clean look and simplifies setup.

• Rear Derailleur: The SRAM Force eTap AXS rear derailleur features a clutch mechanism for a stable, quiet chain and precise shift quality, even under load.

• Crankset & Power Meter: Power delivery is handled by a SRAM Force AXS crankset with an integrated power meter . This is an invaluable tool for training and racing, allowing you to precisely monitor your output and pace your efforts. For the 58cm frame, the crank arms are sized at 172.5mm to optimize fit and leverage for taller riders .

• Cassette: The wide-ranging SRAM Force XG-1270 10-33T cassette provides a perfect gear for every situation, from steep alpine climbs to high-speed sprints .

Cockpit and Finishing Kit

• Handlebar & Stem: The cockpit is purpose-built for speed and adjustability. It features the Trek Madone adjustable aero VR-CF handlebar, made from OCLV Carbon with an ergonomic 93mm reach and 123mm drop . For the 58cm model, the bar width is 42cm . It’s paired with a Trek Madone aero stem (100mm length for the 58cm) that features invisible cable routing for a clean aesthetic without sacrificing aero performance .

• Seatpost: The bike uses a proprietary Madone aero carbon internal seatmast cap, which integrates a flush-mounted rear light for added safety . The 58cm frame comes with the “tall length” mast cap to accommodate the fit requirements of taller riders .

• Saddle & Tape: Comfort is provided by the Bontrager Aeolus Elite saddle with austenite rails (145mm width for the 58cm) and Bontrager Supertack Perf tape for a secure and comfortable grip .

Brakes

• Confident and consistent stopping power comes from SRAM Force eTap AXS hydraulic disc brakes . Paired with 160mm SRAM CenterLine X rotors (centerlock), these brakes offer exceptional modulation and reliable performance in all weather conditions, giving you the confidence to brake later and corner harder .

Wheels and Tires

• Wheelset: The Madone rolls on a race-ready Bontrager Aeolus Pro 5 wheelset . These OCLV Carbon rims feature a 50mm depth and a 19.5mm internal width, striking an excellent balance between aerodynamic efficiency and stable, crosswind-friendly handling. They are also Tubeless Ready (TLR) , allowing for lower pressures, reduced rolling resistance, and fewer flats .

• Tires: It is fitted with Bontrager R3 Hard-Case Lite tires in a 700x25c size, offering a great blend of low rolling resistance, grip, and puncture protection . The frame officially clears tires up to 28mm, providing options for increased comfort .

Sizing: The “58cm” Fit

This size 58cm frame is engineered for taller riders seeking a race-proven fit.

• Rider Height: Designed to fit riders approximately 180cm to 185cm (5’11” to 6’1″) tall .

• Key Geometry (Size 58cm): The bike features a long and stable wheelbase of 992mm for high-speed confidence . The reach is 396mm and the stack is 581mm, placing the rider in an aggressive yet sustainable aero position . The head tube angle is a slack 73.8° for planted steering, while the 73.0° seat tube angle centers the rider for efficient power transfer .

Why This Bike?

The 2021 Trek Madone SLR 7 eTap Gen 6 represents the culmination of Trek’s aero and compliance engineering. It’s a bike that refuses to compromise, offering the stiffness and aerodynamic profile of a dedicated race machine while incorporating the road-smoothing magic of IsoSpeed to keep you fresh on the longest days in the saddle . The addition of the SRAM Force AXS groupset with a power meter elevates it to a complete performance system. As reviewers have noted, it offers a “composed race machine with a compliant ride,” balancing fast handling and comfort unlike any other aero-road bike . For the rider looking at this 58cm model, you’re acquiring a modern classic that set the standard for what an aero bike could be