Product Description
The Trek Project One Domane SLR Gen 4 is a premium endurance road platform built from ultralight 800 Series OCLV Carbon and designed for speed, comfort, and versatility across rough pavement and light gravel. This bare frame features Trek’s updated rear IsoSpeed system to help smooth rough roads while reducing frame weight compared to previous generations.
This frame uses Trek’s Gen 4 Domane platform with internal storage, flat mount disc brake compatibility, internal cable routing, T47 bottom bracket shell, and clearance for up to 38mm tires. It also features updated tube shaping for improved aerodynamics and a more refined endurance-focused ride feel. As a Project One frame, it is a unique custom Trek offering rather than a standard off-the-shelf frameset.
Key Features
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Trek Project One Domane SLR Gen 4 bare frame
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800 Series OCLV Carbon construction
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Rear IsoSpeed compliance system
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Built for endurance road riding with comfort, stability, and speed
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Internal storage compartment
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Internal cable routing
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Flat mount disc brake compatible
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T47 threaded bottom bracket shell
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142x12mm rear thru-axle frame standard
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Fender mounts
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Top tube bag mount
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Aerodynamic Kammtail Virtual Foil (KVF) tube shaping
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Maximum tire size: 38mm without fenders, 35mm with fenders
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Maximum brake rotor size: 160mm front and rear
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Mechanical drivetrain compatible with full-housing front derailleur setups only
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D-shaped KVF seatpost required
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Uses Trek Endurance geometry
Specifications
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Brand: Trek
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Model: Project One Domane SLR Gen 4
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Frame Material: 800 Series OCLV Carbon
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Frame Fit: Endurance
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Brake Type: Flat Mount Disc
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Rear Spacing: 142x12mm
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Front Spacing: 100x12mm
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Bottom Bracket: T47
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Cable Routing: Internal
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Head Tube: Tapered
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Tire Clearance: 38mm without fenders, 35mm with fenders
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Max Rotor Size: 160mm front and rear
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Max Chainring: 2x 52/36 (min 46/33), 1x 50T
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Mounts: Fender mounts, top tube bag mount
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Storage: Internal downtube storage
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Frame Features: Rear IsoSpeed, 3S chain keeper, internal storage, KVF shaping
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Weight: 1193g frame only, painted, size 56cm
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Weight Limit: 275 lb / 125 kg total system weight
Compatibility
Compatible with:
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Flat mount disc road components
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12x100mm front and 12x142mm rear thru-axle wheel systems
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T47 bottom brackets
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Aftermarket 30mm spindle-compatible T47 bottom brackets, when properly matched
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Modern drivetrain systems
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Mechanical drivetrains using full-housing front derailleur designs such as Shimano toggle front derailleurs
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Tires up to 38mm without fenders
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Tires up to 35mm with fenders
Fit and frame notes:
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Uses Trek Endurance geometry
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Requires a D-shaped KVF seatpost, not a standard round seatpost
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Compatible with 160mm max brake rotors front and rear
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Max chainring compatibility is 2x 52/36 (min 46/33), 1x 50T
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SRAM mechanical front derailleurs are not compatible
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DuoTrap S is not compatible
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Not compatible with the Madone SLR bar/stem
Included
Not Included
Warranty and Notes
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Bare frame only. This is not a traditional complete off-the-shelf frameset.
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This is a unique Trek Project One frame and a genuine direct-purchased Trek product.
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Includes only what is pictured.
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Includes self-contained IsoSpeed components.
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For the best guidance on sourcing the correct build parts, we recommend working with your local Trek dealer. They can help confirm compatibility based on your fit needs and intended groupset.
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For size recommendations and geometry charts, please refer to Trek’s official website for the most accurate model-specific fit information.
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This is a genuine Trek product and is eligible for Trek’s full factory warranty when assembled by an authorized Trek dealer. Please retain your build invoice and proof of purchase for any future warranty claim.
Condition
