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A fully revamped 4130 Chromoly Steel frame with UDH compatibility, dropper-post readiness, semi-internal cable routing, and mounts for bottles, racks, fenders, and accessories gives you a platform that can be set up for almost anything. Platform Highlights 4130 Chromoly Steel Frame — Tough, repairable, and with a ride quality that carbon can't replicate. Built for the long haul. UDH-Compatible — Universal Derailleur Hanger means no hunting for proprietary parts anywhere in the world. Dropper Post Ready — Internal routing already in place. Add a dropper whenever you're ready. Semi-Internal Cable Routing — Cleaner than fully external, easier to service than fully internal. Tire Clearance — Plenty of room for real-world rubber in any configuration: Frame & Standard Fork: 700c x 55mm (2.2") or 650b x 60mm (2.4") Frame & Monster Fork (Carbon): 700c x 55mm (2.2") or 650b x 55mm (2.2") Mounts for Everything — 3 water bottle mounts plus rack, fender, and accessory mounts. Pack it up or strip it down. Build & Customize Wheelset — choose your build 700c — Fast & Versatile 23mm tubeless-capable rims (tape, valves, and sealant required) Continental Terra Hardpack TR 50mm Best for: gravel racing, mixed-surface riding, fast days out Included 650b — Capable & Comfortable 25mm tubeless-capable rims (tape, valves, and sealant required) Vittoria Barzo 2.1" knobby tires More volume, more grip, more trail capability Best for: bikepacking, rough terrain, off-road days Included ?? Want both? Add the dual wheelset option — wheels, tires, tubes, rotors, and cassette — for $299.99 . Swap between setups in minutes. The 700c tire: one of the fastest-rolling 50mm gravel tires you can buy. The Continental Terra Hardpack TR 50 scored 18.6 watts rolling resistance in independent lab testing at BicycleRollingResistance.com — earning a 4.5/5 "Highly Recommended" rating and putting it among the fastest gravel tires at this width. A flat central tread keeps things quick on pavement and hard-pack, while developed shoulder lugs and Continental's ShieldWall puncture protection handle the rough stuff. PureGrip compound means grip and durability don't get traded off against each other. At 50mm, this tire smooths out terrain that would rattle a narrower setup — without giving up speed. Fork — choose your setup 4130 Chromoly Steel Fork Matched to the frame — same ride character 12x100mm thru-axle Mounting points for racks and accessories Included Carbon Fiber "Monster Fork" Saves over 1.25 lbs vs steel fork Geometry-altering flip-chip for fit adjustment Improved comfort and front-end stiffness +$299.99 All-Road Suspension Fork 40mm travel — takes the edge off rough terrain Noticeably smoother on chunky gravel and trails Regular MSRP $450 +$350 Complete Component Spec Frame 4130 Chromoly Steel with Thru-Axle Dropouts (142mm rear spacing) UDH-Compatible derailleur hanger Semi-Internal Cable Routing Dropper Post Ready Mounts for 3 water bottles, racks, fenders, and accessories Drivetrain 12-Speed State Bicycle Co. drivetrain Crank: 40t Direct Mount Chainring Cassette: 11–46t (upgrade to 11–50t available for $69.99) Cockpit & Brakes Gravel handlebar with 33° flare Cable-Actuated Hydraulic Disc Brakes with compressionless housing Note: SRAM drivetrain upgrades include full hydraulic brakes Rims 700c: 23mm tubeless-capable (tape, valves, and sealant required) 650b: 25mm tubeless-capable (tape, valves, and sealant required) Tires 700c: Continental Terra Hardpack TR 50mm — tubeless ready 650b: Vittoria Barzo 2.1" — not tubeless rated ?? Please note: the Vittoria Barzo tires (650b) are not rated tubeless. While it may be possible to set these up tubeless, we cannot guarantee compatibility. State Bicycle Co. recommends professional assembly for tubeless setups. Available Upgrades Drivetrain SRAM Rival XPLR AXS — Wireless 13-Speed Rival E1 carbon levers & hydraulic brakes Rival XPLR rear derailleur Rival 10–46t 13-speed cassette SRAM Flat-Top chain Battery & charger included Apex D1 - 170mm Crank - 40t Best for: riders who want a wider range and more refined components for longer days in the saddle +$999.99 SRAM Eagle Transmission "Mullet" AXS — Wireless 12-Speed Rival E1 carbon levers & hydraulic brakes S1000 T-Type rear derailleur Eagle 10–52t cassette (XS1270) — massive range Eagle T-Type chain Battery & charger included Apex D1 - 170mm Crank - 40t Best for: big mountain days, loaded bikepacking, or anyone who wants to spin up anything +$999.99 Wheels Dual Wheelset (700c + 650b) Both wheel sizes and tire setups Rotors, cassette, and tubes included Swap between setups in minutes $299.99 DT Swiss Alloy Wheelset Available in 650b or 700c A meaningful step up in stiffness, weight, and hub quality +$450 Top Upgrade ENVE AR40 Carbon Wheelset Wind tunnel-tested aerodynamics 25mm internal rim width — wide and fast Gravel-rated durability, tubeless only (sealant included) Available in HG and XDR driver The fastest wheel upgrade available for this build $1,400 Size Recommendations Size Height Range XS 5'1" – 5'6" S 5'5" – 5'10" M 5'9" – 6'2" L 6'1" – 6'5" Want to get technical? Full Geo / Specs here .