3T Extrema Italia Rival & GX Eagle Transmission SRAM AXS Gravel Bike

Description

The 3T Extrema Italia Rival/GX Eagle Transmission AXS Bike is 3T’s most capable gravel platform — a bike that deliberately blurs the line between gravel and mountain biking by accepting that serious off-road riding requires serious tires. “Italia” is not a trim level; it means the frame is handcrafted at 3T’s factory in Presezzo, Italy using a proprietary filament-winding and resin transfer molding process. The Sqaero frame architecture was developed specifically for aerodynamics around big knobby tires — producing roughly 7 watts of drag savings at 20 mph compared to round tube profiles, an engineering insight that only makes sense once you’ve accepted 50-plus millimeter gravel rubber as the starting point. At $9,999, the Extrema Italia arrives with 700x55mm Continental Terra Adventure tires mounted, a 3T Discus 45|40 LTD carbon wheelset on Carbon-Ti hubs, and a mixed SRAM drivetrain that pairs road-level shifter ergonomics with a 10-52T mountain cassette — 520% of total gear range on a drop-bar gravel bike.

The frame is built through filament winding combined with RTM (Resin Transfer Molding): dry carbon filaments are wound around mandrels, then resin is injected under pressure rather than relying on pre-preg sheet layup. This process gives 3T superior control over fiber orientation throughout the tube walls and produces 50% less material waste than conventional pre-preg construction. The Sqaero tube shapes are the visual signature — a 50mm-wide downtube and 25mm seat tube with squared-off aerodynamic profiles engineered in a wind tunnel around oversized gravel tires rather than road-bike cross-sections. The geometry is built around 57mm tire clearance on 700c wheels, which covers everything from fast gravel racing to legitimate trail riding. Integrated downtube storage with a Fidlock mini-hook closure and a Missgrape neoprene internal bag holds a spare tube, multitool, and CO2 cartridge without adding a frame bag. The 3T Fango Extrema Integrale carbon fork (420g, 395mm axle-to-crown) runs triple cargo mounts rated at 3kg per side for bikepacking loads and routes all cables through the D-shaped steerer. A UDH (Universal Derailleur Hanger) on the frame allows direct-mount compatibility with SRAM’s Transmission derailleur systems — and future-proofs the bike for whatever SRAM develops next in the T-Type ecosystem.

The Rival/GX Eagle Transmission drivetrain is the most distinctive feature on this bike. SRAM’s Rival E1 AXS road shifters and hydraulic brake levers provide the ergonomics of a road cockpit — clean drop-bar shifting buttons, one-finger braking, Reach Adjust for hand fit — while the rear derailleur is a SRAM GX Eagle Transmission T-Type mountain derailleur mounted directly to the frame’s UDH with no traditional hanger. The GX Eagle Transmission is a crash-robust, hangerless design with cassette-mapping logic that handles intelligent shifting under load. Behind it sits a SRAM GX Eagle Transmission 10-52T cassette — 12 speeds across 520% of gear range, which is meaningfully broader than SRAM’s own XPLR gravel-specific drivetrain (10-44T, 440%). On a bike that spec’s 700x55mm tires for mixed terrain, having genuine bailout gearing for technical climbs while still offering reasonable top-end on paved descents is what makes the mixed drivetrain approach make sense rather than just being a novelty. The SRAM T-Type chain completes the Eagle Transmission compatibility. A 40T chainring on the SRAM Rival Wide AXS crankset (3T Torno Wide 40T also available) drives the 1x setup, and SRAM Rival E1 hydraulic disc brakes with 160mm flat-mount rotors handle all stopping.

The 3T Discus 45|40 LTD wheelset is a purpose-built carbon gravel setup: 45mm deep, 40mm externally wide, 29mm internal width hooked tubeless rims on Carbon-Ti X-Hub SP Disc Centerlock hubs, laced with 24 Sapim CX-Ray bladed aero spokes per wheel to chrome-plated brass nipples. The total wheelset weight is 1,665g — appropriate for the rim width and intended use, and the Carbon-Ti hub reputation for durability under load earns its place on a bikepacking-capable build. Continental Terra Adventure 700x55mm tires with Trail Casing (E25) puncture protection come fitted tubeless-ready, sized to fill the frame’s tire clearance and matched to the 29mm internal rim width. The 3T Superghiaia Integrale LTD carbon handlebar runs a progressive flare — more relaxed through the tops, steeper in the drops for control on rough terrain — at 40, 42, or 44cm widths, with full internal cable routing. The 3T MORE Integrale stem’s hollow design allows hose swaps without disconnecting or bleeding the hydraulic brakes, a meaningful service detail on a bike designed for remote riding. The 27.2mm round carbon seatpost accepts any standard dropper post for riders who want to add one later.

Specs at a Glance

• Frame: Sqaero carbon, filament-winding + RTM, made in Presezzo, Italy; 1,099g (size 54); integrated downtube storage (Fidlock/Missgrape); UDH
• Fork: 3T Fango Extrema Integrale carbon, 420g, 395mm A-to-C, 50mm rake, triple cargo mounts (3kg/side), D-shaped steerer
• Tire clearance: 700x57mm
• Drivetrain: Mixed SRAM Rival E1 AXS (shifters/brakes) + SRAM GX Eagle Transmission T-Type (derailleur/cassette), 12-speed wireless electronic
• Rear derailleur: SRAM GX Eagle Transmission T-Type, UDH direct-mount
• Cranks: SRAM Rival Wide AXS, 40T, 1x
• Cassette: SRAM GX Eagle Transmission XS 1275 T-Type, 10-52T, 12-speed (520% range)
• Chain: SRAM GX Eagle Transmission T-Type
• Brakes: SRAM Rival E1 AXS hydraulic disc; 160mm flat-mount rotors
• Wheels: 3T Discus 45|40 LTD carbon (45mm depth, 29mm internal width) on Carbon-Ti X-Hub SP Disc Centerlock hubs; 24x Sapim CX-Ray spokes; 1,665g pair
• Tires: Continental Terra Adventure, 700x55mm, tubeless ready, Trail Casing (E25)
• Handlebar: 3T Superghiaia Integrale LTD carbon, progressive flare, 40/42/44cm; internal cable routing
• Stem: 3T MORE Integrale, hose-friendly swap design, 80–110mm (size-dependent)
• Seatpost: 3T carbon, 27.2mm round, zero offset; dropper-compatible
• Saddle: San Marco Shortfit Off-Road
• Headset: 3T MinMax Integrale IS42/IS52
• Weight: ~8.84 kg (size 56)
• Sizes: S, M, L, XL
• Colors: Selva, Abisso, Project X

Design Benefits

1. Sqaero tubes designed for big tires. The aerodynamic advantage of Sqaero tube shapes (~7W at 20 mph vs. round tubes) is specifically calculated around the airflow disruption of wide knobby tires — the kind of aero engineering that reflects 3T’s actual intended use case rather than optimizing for a road-tire cross-section on a gravel bike.
2. Filament-winding + RTM Italian construction. The combination of filament winding and resin transfer molding at 3T’s Presezzo factory gives consistent fiber orientation through complex tube geometries, 50% less material waste than pre-preg, and the quality control of in-house Italian manufacturing rather than outsourced production.
3. Mixed SRAM Rival/GX Eagle Transmission drivetrain. Road shifter ergonomics with a 10-52T mountain cassette: 520% gear range on a drop-bar bike. For riders who want to cover paved descents and 20%+ dirt climbs in the same ride without mechanical compromise, this is the drivetrain combination that makes it work.
4. GX Eagle Transmission UDH direct-mount rear derailleur. The hangerless direct-mount setup is significantly more crash-resilient than a conventional derailleur hanger. On remote mixed-terrain rides where a bent hanger can end a ride, this is a meaningful reliability upgrade.
5. 57mm tire clearance on 700c. Room for tires that are within reach of 29er mountain bike territory — traction and compliance on rough ground that no conventional gravel bike geometry can match.
6. 3T Discus 45|40 LTD on Carbon-Ti hubs. A premium custom carbon wheel build with aero rim depth, wide internal section for the intended tire size, and Carbon-Ti hubs known for durability under bikepacking loads — not a value-spec wheelset on a premium frame.
7. Integrated storage and triple fork mounts. The downtube storage and fork cargo mounts (3kg/side) are built into the frame and fork, not added as afterthought. This is designed as a go-anywhere bike, not one that becomes a bikepacking rig via bolt-on additions.

Final Take

The 3T Extrema Italia is for the rider who has decided that gravel riding means riding anything — and wants equipment built around that decision rather than compromised toward it. The Italian-made Sqaero carbon chassis, the 57mm tire clearance, and the Rival/GX Eagle mixed drivetrain are coherent answers to specific problems: aerodynamics with big rubber, gear range for genuine mixed terrain, and road-bike ergonomics without sacrificing mountain-bike capability. At $9,999, it’s a complete build that doesn’t ask for upgrades before it’s ready to go anywhere.

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