Skip to content

Description

AERO MEETS GRAVEL

The 3T PRIMO is the world’s first full-aero gravel bike designed for riders ready to dive into the gravel scene without breaking the bank. It slices through wind, dirt, and doubt with a lightweight carbon frame and aggressive race geometry—because fast doesn't have to mean expensive.

BUILT FOR CONTROL

With a high-modulus carbon frame and 3T’s Fango fork, the PRIMO is engineered for stiffness, compliance, and off-road capability. A slack head angle and thru-axles keep it sharp in the corners and steady on chunky descents. This is performance where it matters—on real-world gravel.

DIALED AND READY

From the 3T Superergo Pro handlebar and stealthy Apto stem to the geometry tuned per size, the PRIMO cockpit is built for control and comfort—no fine-tuning required. Add in Shimano’s GRX 1x12 drivetrain, a wide-range 10–45T cassette, and grippy Pirelli 700x45 tires, and you’ve got a setup that climbs, corners, and crushes descents with zero fuss. Clip in and go full tilt.

SHIMANO GRX 1X12 DRIVETRAIN

Shimano GRX 1x12 drivetrain with 10-45T cassette for smooth, reliable shifting and wide gear range for tackling steep climbs and descents.

3T FANGO FORK

Full carbon 3T Fango fork absorbs shock and ensures stability while keeping the bike nimble and responsive on off-road terrain.

PIRELLI CINTURATO 700X45 TIRES

Durable Pirelli Cinturato Adventure tires, 700x45mm, designed for gravel and mixed-terrain, offering grip, comfort, and puncture resistance.

FULCRUM WHEELSET

Lightweight Fulcrum Rapid Red 900 700c wheelset for smooth rolling and durability across gravel, offering a balance of speed and ruggedness.

3T SUPERERGO PRO HANDLEBAR

Ergonomically designed 3T Superergo Pro handlebars for maximum comfort and control, ideal for long gravel rides and aggressive off-road performance.

Components

FRAMESET
FRAME
Unidirectional pre-preg carbon, High-modulus/high-strength performance blend layup
HEADSET
Sealed cartridge 1.125” - 1.5”
SUSPENSION
FORK
3T Fango, Full Carbon, tapered steerer tube (1.125” - 1.5”)
DRIVETRAIN
REAR DERAILLEUR
Shimano GRX RD-RX822 12-Speed
SHIFTER
Shimano GRX ST-RX610 12-Speed
CRANK
Shimano FC-RX610-1, 12-Speed (S: 170mm, M&L: 172.5mm, XL: 175mm)
CHAINRING
40T
CASSETTE
Shimano CS-M6100-12 10-45T
CHAIN
Shimano CN-M6100 12-speed
BRAKES
FRONT BRAKE
Shimano BR-RX400 Hyrdraulic Brakes
REAR BRAKE
Shimano BR-RX400 Hyrdraulic Brakes
ROTOR
SM-RT64 160mm
WHEELS
REAR HUB
Fulcrum hubs with sealed bearings, Centerlock, 24H
RIM
Fulcrum Rapid Red 900 700c or Fulcrum Racing 600 700c
TYRE
Pirelli Cinturato Adventure 700x45”
MAX TYRE SIZE
700x45”
CONTACT POINTS
HANDLEBAR
3T Superergo Pro
GRIPS
3T Prendo Tough
SADDLE
Selle Italia Novus Boost Evo Superflow
SEATPOST
3T Primo seatpost for Ritchey clamp
STEM
3T Apto Stealth (S:80mm - M:90mm - L: 100mm - XL:110mm)
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°