SCOTT Addict RC SUB5 Dangerholm: The Sub-5kg Bike | Photos, Price & Specs

Dangerholm’s SCOTT Addict RC SUB5: 4,991 Grams of Extreme Engineering

Discover Dangerholm’s latest masterpiece: a SCOTT Addict RC weighing just 4,991g. Technical analysis of Darimo, Gelu, and GrigioCarbonio components for 2026's lightest road bike.

SCOTT Addict RC SUB5: Dangerholm’s 4,991-Gram Dream

Is it possible to build a disc-brake road bike that is incredibly light yet perfectly usable in the real world? Dangerholm has answered this question with his latest creation: the SCOTT Addict RC SUB5.

This isn't a museum piece or a hollowed-out hill-climb special. It is a complete racing machine, featuring a 2x12 electronic drivetrain, powerful disc brakes, and 29mm tires. The final weight? 4,991.4 grams, including pedals, bottle cages, and a computer mount.

The Frameset: The HMX-SL Foundation

The starting point is a production SCOTT Addict RC HMX-SL frame (size L/56cm).

    Frame Weight: 630.9 g (including hardware).

    Fork Weight: 282.4 g.

    Despite its featherweight status, this frame maintains a system weight limit of 120 kg, offering the stiffness required for World Tour performance.

The Gram Hunt: Elite Components

Dangerholm replaced every single bolt and axle to break the 5 kg barrier:

    Thru-Axles: RideNow Titanium (24.7 g).

    Cockpit: Darimo Nexum Drag integrated handlebar with Extralite HyperPlug HD ends (1 g each).

    Seatpost: Custom Darimo D-shape.

    Saddle: Gelu K3, weighing an incredible 39.2 g (80 kg rider weight limit).

    Bar Tape: Ciclovation KOM (because comfort should not be an option).

Drivetrain and Brakes: Performance Without Compromise

Unlike many weight-weenie builds, the SUB5 features a masterfully prepared SRAM RED E1 double drivetrain:

    Crankset: GrigioCarbonio Road T1000, 170mm (256.3 g).

    Chainrings: Carbon-Ti X-CarboRing X-AXS (50/37t).

    Pedals: Wahoo Speedplay Nano, tuned down to 150.6 g.

    Brakes: SRAM RED levers paired with 612 Parts 2-piston calipers (native post-mount to avoid heavy adapters).

    Rotors: Carbon-Ti with steel braking tracks and carbon cores, chosen for their genuine ability to manage heat on descents.

866-Gram Custom Wheels

The wheels are the project's true technological masterpiece, weighing a combined total of just 866.7 g:

    Rims: Light Bicycle Airia 32 Disc (32mm depth, 23.5mm internal width).

    Hubs: NonPlus Components Primaro Fusion.

    Spokes: Carbon spokes for maximum lateral stiffness.

    Tires: Pre-production Schwalbe Aerothan (measured 29mm effective width) with Tubolito S-Tubo-Road TPU tubes.

Cost and Weight Analysis

Component    Weight (Grams)          Estimated Price (Euro)

SCOTT HMX-SL Frameset       913.3 g            € 4,500

GrigioCarbonio Crankset       256.3 g            € 1,200

Custom R2-Bike Wheelset     866.7 g            € 3,800

Gelu K3 Saddle           39.2 g  € 450

Darimo Nexum Handlebar    ~230 g € 850

612 Parts Brake Calipers        ~140 g (pair)   € 600

Titanium Bolts & Axles          ~60 g   € 300

Total Estimated Value            Over € 16,500

Conclusion: A Work of Art

The SCOTT Addict RC SUB5 proves that in 2026, the obsession with weight doesn't have to sacrifice safety or disc-brake efficiency. At 4,991 grams, it is a challenge to the laws of physics and the catalogs of major manufacturers. As Dangerholm puts it: "A bike this light has to be fun on the way down, not just arrogant on the way up."

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