Gravel X-PB – Carbon Gravel Bike with WheelTop 1×13, LTWOO 2×12, or SHIMANO DEORE 1×12 (Hydraulic Disc)
The Gravel X-PB extends Twitter’s gravel lineup with a fast-yet-stable carbon chassis and the same three proven drivetrain choices. It’s tuned for all-road cruising, long mixed-surface routes, and everyday adventure riding.
🔧 Key Features
- Carbon Frame & Fork: Thru-axle 12×142 / 12×100 with internal routing for durability and clean aesthetics.
- Three Drivetrains: WheelTop GEX 1×13 (Wireless & Hydraulic), LTWOO A12 2×12, or SHIMANO DEORE M6100 1×12.
- Hydraulic Disc Brakes: Flat-mount 160/160 mm rotors.
- 700C Wheel Options: Gravel-ready rims/tires for confident grip and rolling speed.
- Design: Integrated routing, adventure-ready ergonomics, upgrade-friendly.
- Sizes: 46 / 49 / 52 / 55 cm.
- Upgrades: Carbon wheels, painted carbon wheels, and carbon handlebar.
🎯 Ideal For
Great for riders who want a capable gravel rig with modern braking and the choice of wireless simplicity, classic 2× range, or MTB-style 1× gearing for rugged routes.
Gravel X-PB is a carbon gravel bike aimed at speed and stability across rough roads and hardpack. Featuring thru-axle disc integration and internal routing, it offers the same three configurations as Gravel V1-PB: 1×13 WheelTop GEX (Wireless & Hydraulic), 2×12 LTWOO A12 (Hydraulic), and 1×12 SHIMANO DEORE M6100 (Hydraulic).
Technical Specifications
Key Components
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Wheel Size: 700C
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Frame Height: 46cm / 49cm / 52cm / 55cm
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Bike Color: —
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Net Weight: —
Frame & Structure
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Frame: Gravel X, carbon, disc & thru-axle 12×142, internal cables
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Fork: Gravel X, carbon, disc & thru-axle 12×100, 700C
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Seat Post: Carbon fiber (size matched)
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Head Sets: Sealed bearings
Handlebar & Cockpit
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Handlebar Set: Aluminum alloy cockpit (internal-ready)
Drivetrain Options
WheelTop GEX — 1×13 (Wireless & Hydraulic)
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Shift Levers: WheelTop GEX 1×13S (Wireless & Hydraulic)
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Front Derailleur: None (1×)
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Rear Derailleur: WheelTop GEX – 13S (Wireless)
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Crankset: RS Aluminum Alloy, Hollow Closed Plate 48T
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Cassette: SUNSHINE 13S – 11–46T
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Chain: SUMC – 13S
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Bottom Bracket: Threaded T47×24 mm, Hollow & Sealed Bearings
RETROSPEC (LTWOO) A12 — 2×12 Hydraulic
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Derailleur Lever: RETROSPEC (LTWOO) A12 – 2×12S
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Front Derailleur: RETROSPEC (LTWOO) A12 – 2S
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Rear Derailleur: RETROSPEC (LTWOO) A12 – 12S
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Crankset: Prowheel ARP, aluminum alloy, hollow 34–50T
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Cassette: SUNSHINE – 12S, 11–42T
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Chain: SUMC – 12S
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Bottom Bracket: Hollow BB92×41×24 mm, pressed
SHIMANO DEORE M6100 — 1×12 Hydraulic
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Derailleur Lever: SHIMANO DEORE M6100 – 12S
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Front Derailleur: None (1×)
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Rear Derailleur: SHIMANO DEORE M6100 – 12S
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Crankset: SENICX-FM3, aluminum alloy, hollow 36T
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Cassette: SUNSHINE – 12S, 11–50T
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Chain: SUMC – 12S
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Bottom Bracket: Hollow BB92×41×24 mm, pressed
Braking System
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Brake: Hydraulic disc, flat-mount, 160/160 mm
Wheelset & Tires
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Wheels/Tires: 700C-ready wheelset with gravel tires (size-dependent)
Other Components
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Saddle: Performance comfort
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Cables: JAGWIRE
Upgrade: Carbon wheelset, painted carbon wheels (White or Full Holographic), and carbon handlebar upgrade.
What’s Included
- Standard safety reflectors
- PC bottle cage + Tools
- TWITTER Manual + Warranty card
Decal & Finish Disclaimer: Actual colors, graphics, and finishes may differ due to batch variation, lighting, and display settings.
