3T Primo 2 WPNT Rival AXS XPLR Bike

The 3T Primo 2 WPNT Rival AXS XPLR Bike picks up where 3T's original aero gravel argument started. When 3T introduced the Exploro nearly a decade ago, it was a provocation: an aero tube profile applied to a bike designed to run 40mm-plus tires. The Primo 2 WPNT extends that logic into the current decade with three meaningful updates — fully integrated cable routing throughout frame and cockpit, a SRAM Universal Derailleur Hanger dropout, and Italian-painted finishes under 3T's We Paint program. Each one has a practical reason.

The frame is built from unidirectional pre-preg carbon using a high-modulus/high-strength performance blend layup, with tube profiles shaped around what 3T calls the Sqaero cross-section — a 50×75mm truncated profile designed to guide airflow around a wide front tire rather than assume the bike will run narrow road rubber. This is the key distinction between the Primo 2's aero design and a conventional road bike adapted for gravel: the tube shapes are sized for the tires that actually make sense here, not scaled down from a 25mm tire context. The clearance to match runs to 700c×45mm on standard wheels or 650b×51mm (2.0") if you want to run wider on shorter rims.

At $5,799, this is the point in the Primo 2 lineup where SRAM's 13-speed XPLR system appears, and the UDH dropout is what makes it possible. SRAM's Full Mount rear derailleur — required for the XG-1351 13-speed cassette — only works with a Universal Derailleur Hanger dropout. The 10-46T cassette with a 40T chainring delivers more gear range than a 12-speed XPLR setup at comparable step sizes between gears, which matters on longer gravel rides with sustained climbs. The SRAM Rival AXS XPLR levers handle wireless shifting; the Rival E1 hydraulic disc brakes with 160mm rotors handle everything else. It's a cohesive drivetrain choice that rewards riders who want the wide range of a mountain cassette without the weight of a 2x setup.

What changed most visibly between the original Primo and the Primo 2 is how cables disappear. The 3T Superghiaia Integrale LTD handlebar routes hydraulic lines and electronic cables internally from drop to stem to frame — the 3T APTO stem with semi-integrale spacer kit bridges bar to head tube with the same result. On a gravel bike that sees variable conditions, eliminating external cable runs means fewer surfaces to collect mud, fewer points of potential wear, and a cockpit that doesn't look assembled from separate parts. The frame-to-fork interface continues the same internal logic with the 3T Fango Primo 2 carbon fork. Wheels are Fulcrum Rapid Red 900, carbon tubeless-ready rims that match the frame's aero character. Tires ship as either Pirelli Cinturato Adventure 700×45 or Vittoria Terreno T30 Sport 700×40 — both tubeless-ready options at the wide end of what works best on this frame.

WPNT designates 3T's We Paint program — frame finishing handled in Italy, enabling tighter quality control and more precise color execution. The four colorways carry Italian names: Fumo (smoke), Gesso (chalk), Salvia (sage), and Orchidea (orchid). Subdued, field-appropriate finishes rather than high-gloss statements. One geometry note worth knowing: the head tube angle scales from 69.5° on a size S to 72.5° by size L, with a constant 70mm BB drop and 415mm chainstay across all four sizes — S through XL. The short chainstay keeps the rear end responsive regardless of frame size; the low BB drop gives the kind of planted, stable cornering that suits fast mixed-terrain riding. The saddle is a Fizik Vento Argo X5 in 140mm, a short-nose shape that works well in an engaged position without requiring a separate fit adjustment. This is a bike for riders who want aero efficiency and gravel capability without managing two separate platforms.