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Description

AERO-OPTIMIZED CARBON

Built on a unidirectional pre-preg carbon chassis with high-modulus/high-strength fiber layup, the 3T Primo maximizes stiffness and power transfer without adding bulk. Its aero tube profiles and aggressive geometry deliver low drag and high precision across mixed surfaces—blending road speed with gravel confidence.

OFF-ROAD PRECISION

The full carbon 3T Fango fork, tapered steerer, and slack head angle create a front end that feels stable at speed and surgical through corners. Combined with 12mm thru-axles and tight handling geometry, the chassis offers precision and composure over rough terrain, loose descents, and fast, flowing tracks.

CONTROL-FOCUSED COCKPIT

The Primo cockpit is equipped with 3T’s Superergo Pro handlebars, shaped for optimal wrist angles and confident lever reach on long off-road descents. Paired with the lightweight 3T Apto Stealth stem and carbon Primo seatpost, the setup offers dialed front-end control and efficient power transfer. The Selle Italia Novus Boost Evo Superflow saddle rounds out the package, ensuring long-ride comfort and race-ready support where it counts.

ITALIAN ROOTS. RACE-BRED

Founded in Italy in 1961, 3T has spent decades shaping the future of performance cycling—from pioneering alloy cockpit designs to developing some of the fastest aero frames in the world. With deep roots in pro road racing and a bold vision for gravel, 3T bikes combine cutting-edge engineering with a legacy of innovation. The Primo continues that tradition: fast, refined, and unmistakably 3T.

SHIMANO GRX 1X12

The 12-speed GRX drivetrain offers a wide 10–45T range with optimized clutch control and chain retention. Paired with a 40T front ring, this system minimizes chain slap and maximizes engagement—ideal for aggressive gravel rides where terrain and pace constantly shift.

3T FANGO CARBON FORK

A full carbon fork with tapered steerer and 12mm thru-axles, the Fango delivers stiffness, vibration control, and tracking precision. Engineered to pair seamlessly with the Primo frame’s race geometry, it holds a line through descents and tightens control on unpredictable terrain.

FULCRUM RAPID RED 900

Built around tubeless-ready rims and sealed bearing hubs, the Rapid Red 900 wheels balance low rotational mass with gravel-ready resilience. Lightweight and responsive, they’re ready to handle everything from loose gravel sprints to long, loaded routes.

PIRELLI CINTURATO 700x45

With a proven adventure tread and durable compound, the Pirelli Cinturato 700x45s are designed for high-volume grip and puncture resistance. Capable on loose, rough, or wet surfaces—ideal for riders chasing speed without sacrificing traction.

ERGONOMIC COCKPIT – BUILT BY 3T

The Superergo Pro bar features progressive shaping for wrist support and control in the drops, with a wide platform for varied grip. Paired with the minimalist Apto stem and Primo carbon seatpost, the cockpit is clean, stiff, and designed for performance in all-day gravel conditions.

Components

FRAMESET
FRAME
Unidirectional Pre-Preg Carbon, High-Modulus/High-Strength Performance Blend Layup, Internal Cable Routing, BSA Threaded Bottom Bracket
HEADSET
Sealed Cartridge Bearings, Integrated, Tapered 1.125” - 1.5”
SUSPENSION
FORK
3T Fango Full Carbon Fork, Tapered Steerer Tube (1.125” - 1.5”), 12x100mm Thru-Axle, Flat Mount Disc
DRIVETRAIN
REAR DERAILLEUR
Shimano GRX RD-RX822, 12-Speed, Shadow Plus Clutch Mechanism
SHIFTER
Shimano GRX ST-RX610, 12-Speed
CRANK
Shimano FC-RX610-1, Hollowtech II, 12-Speed (S: 170mm, M–L: 172.5mm, XL: 175mm)
CHAINRING
40T Narrow-Wide
CASSETTE
Shimano Deore CS-M6100-12, 10-45T, Hyperglide+ Technology
CHAIN
Shimano CN-M6100, 12-Speed, Quick-Link Compatible
BRAKES
FRONT BRAKE
Shimano BR-RX400 Hydraulic Disc Brake, Flat Mount
REAR BRAKE
Shimano BR-RX400 Hydraulic Disc Brake, Flat Mount
ROTOR
Shimano SM-RT64, 160mm, Centerlock, Ice Tech Compatible
WHEELS
REAR HUB
Fulcrum Sealed Bearing Hub, 12x142mm Thru-Axle, Centerlock, 24H
RIM
Fulcrum Rapid Red 900 or Racing 600, 700c, Aluminum Rims, 23mm Internal Width, Tubeless-Ready
TYRE
Pirelli Cinturato Adventure 700x45c, Tubeless-Ready
INNER TUBE
Pre-Installed, Tubeless Conversion-Ready
CONTACT POINTS
HANDLEBAR
3T Superergo Pro, Ergonomic Drop, Lightweight Aluminum
GRIPS
3T Prendo Tough, High-Grip Textured Surface
SADDLE
Selle Italia Novus Boost Evo Superflow, Pressure Relief Cut-Out
SEATPOST
3T Primo Seatpost With Ritchey Clamp
STEM
3T Apto Stealth (S: 80mm, M: 90mm, L: 100mm, XL: 110mm), Alloy
WEIGHT
BIKE WEIGHT
18.96 lbs

Geometry

Size S M L XL
Rider Height 5'2" - 5'7" 5'6" - 5'11" 5'10" - 6'3" 6'2" - 6'7"
Max. BB to Saddle Rail 763mm 790mm 818mm 845mm
Stack 517mm 546mm 575mm 604mm
Reach 366mm 378mm 390mm 402mm
Headtube Angle 69.5° 71.1° 72.5° 72.5°
Fork Rake 50mm 50mm 50mm 50mm
Fork Axle-Crown 395mm 395mm 395mm 395mm
Front Center 591mm 598mm 606mm 627mm
Rear Center 415mm 415mm 415mm 415mm
BB Drop 70mm 70mm 70mm 70mm
Headtube Length 101mm 125mm 150mm 180mm
Toptube Length 529mm 550mm 571mm 592mm
Seattube Length 463mm 490mm 518mm 545mm
Seattube Angle 72.5° 72.5° 72.5° 72.5°