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Full Manufacturer Backing: State Bicycle Co.
State Bicycle Co. builds machines meant to be ridden hard. As an authorized retailer, every bike we sell is backed by State’s "ProBuild" warranty standards, ensuring your rig is protected against manufacturing defects.
Coverage Breakdown:
- 5-Year Frame & Fork: Coverage for Steel and Aluminum frames/forks against manufacturing defects.
- 18-Month eBike System: Protection for the motor, electronics, and battery suite.
- 1-Year Components: Coverage for non-consumable parts (cranks, pedals, bars, wheels, etc.).
- Carbon Advantage: Professionally built carbon frames receive an extended 2-year warranty.
The ProBuild Requirement
To ensure peak performance and validate your warranty, State Bicycle Co. requires proof of professional assembly by a certified mechanic. Bikes must be registered within 30 days of delivery.
Hassle-Free Registration
Don't sweat the paperwork. For our signature service, simply email your proof of assembly and order details to support@belcopia.com and our team will handle the official registration with State for you.
Frame Material
Durable Steel
Drivetrain
Fixed / Single Speed
Wheel Size
40mm Deep-V 700c
Weight
~24.5 lbs
Use Type
Urban Street
State Bicycle Core-Line
Earthstone Edition
"Perfectly Imperfect. Unapologetically Raw."
Widely considered the ultimate urban statement piece, the State Bicycle Co. Core-Line Earthstone is your agent of freedom in a world of plastic and carbon. Stop blending into the crowd and start owning the pavement. Engineered for the rider who values zen-like simplicity and raw, industrial aesthetics, this top-rated city bike strips away the noise and maintenance of multi-speed drivetrains.
Built on a foundation of incredibly rugged High-Tensile Steel, the Earthstone wears its heart on its sleeve with a clear-coated raw finish and blazing red hubs. Feel the intuitive connection of a fixed-gear or the effortless coast of a single-speed—the choice is yours. You aren't just traveling; you're dominating your route with unfiltered style.
"The Earthstone is our homage to brutalist craftsmanship. We exposed the TIG welds and paired them with a raw steel finish and striking anodized red hubs. It’s built so tough and fast, it doesn't just survive the urban jungle—it commands it."
RECLAIM YOUR TIME IF...
- You are tired of fragile bikes and want an indestructible, raw steel machine.
- You demand a silent, highly responsive ride that reacts instantly to your pedal input.
- You want a striking, brutalist statement piece that guarantees you stand out from the pack.
- You value the pure, unadulterated connection of a fixed-gear or single-speed drivetrain.
INDUSTRIAL BEAUTY
Raw and Refined
This bike doesn't hide behind paint. The raw-steel finish is the star, showcasing the honest, brutal craftsmanship of the frame, complete with the unique color variations from the TIG welding process.
See how this industrial canvas makes the vibrant, anodized red hubs pop with an electrifying flash of color. It's a head-turning design that broadcasts your deep-rooted appreciation for unfiltered engineering. Guaranteed to be unlike any other bike on the rack.
TWO WAYS TO RIDE
Fixed or Free: You Decide
The heart of the Core-Line is its versatility, all thanks to the flip-flop hub. Want to feel every nuance of the road? Ride it fixed. Sense the unbroken chain of motion as your legs become one with the machine, a rhythmic pulse connecting you to the pavement.
Prefer a more relaxed journey? Simply flip the wheel and enjoy the carefree glide of a classic single-speed. It represents the pinnacle of maintenance-free performance wrapped in an elegant package. No derailleurs to bend, no shifter cables to stretch. It is the ultimate expression of agentic cycling.
KEY FEATURES
Durable Steel Frame
A strong and reliable foundation that provides a famously smooth ride, absorbing road chatter for enhanced comfort.
Deep V Wheel Set
Stylish and strong 40mm deep-v rims paired with sealed bearing hubs for a smooth, low-maintenance ride.
Customizable Handlebars
Choose your cockpit: classic Drop Bars, agile Riser Bars with Vans grips, or aggressive Bullhorn bars.
Flip-Flop Hub
The ultimate in versatility. Easily switch between a pure fixed-gear setup and a classic single-speed with freewheel.
Fast-Rolling 28c Tires
Tires strike the perfect balance—flat-out speed on the pavement with just enough cushion to handle road imperfections.
Front & Rear Brakes
Dependable, easy-to-maintain caliper brakes are included for confident stopping power right out of the box.
WHY THIS BUILD MATTERS
The Core Line is meticulously engineered for the realities of urban commuting. Here is the technical breakdown of why this bike dominates the city streets.
The Perfect Urban Ratio
Unlike track bikes geared for high-end top speeds, the Core Line uses a perfectly dialed 44x16 gear ratio. This specific ratio provides explosive acceleration off the line at stoplights and makes climbing city bridges significantly more manageable.
Steel Resilience
Aluminum frames are rigid and transfer every bump directly to your spine. The Core Line utilizes a Steel chassis that acts as a natural micro-suspension system, effectively muting road chatter and reducing rider fatigue over long commutes.
40mm Deep-V Aerodynamics
The signature 40mm deep-dish rims aren't just for classic aesthetic appeal. The deeper profile drastically increases the structural integrity and lateral stiffness of the wheel, ensuring it stays true even after slamming into unexpected potholes.
Technical Specifications
| Frame | Durable High-Tensile Steel |
|---|---|
| Fork | High-Tensile Steel, 1 ⅛" Threadless Steerer |
| Bottom Bracket | Sealed Cartridge, JIS Square Taper, English Threaded, 68mm x 103mm |
| Brakes | Dual Pivot Forged Alloy (Clamp Diameter: 23.8mm) |
| Chain & Chainring | YAB Chain | 44T, 130 BCD Chainring |
| Crank | Forged 6061 Aluminum, 170mm Crank Arms |
| Handlebars | Aluminum (Bullhorn: 420mm | Drop: 450mm | Riser: 570mm) |
| Headset & Stem | 1 ⅛" threadless Headset | Steel Stem (25.4mm clamp, Length: 90mm, Rise: +/- 7°) |
| Hubs | Sealed Bearing, Flip-Flop Hub (16T Freewheel and Fixed Cog), Spacing: F:100mm / R:120mm, Bolts: M10 |
| Wheels | 700c Aluminum Wheel Set with 40mm Rim Depth |
| Spokes | 14G Steel, 3 Cross Pattern (Spoke Length F/R: 269mm) |
| Tires | Kenda Brand 700c x 28mm (Suggested Max Tire: 28mm) |
| Seatpost & Clamp | Alloy, D: 27.2mm, L: 220mm | Clamp: Aluminum, D: 29.5mm |
| Saddle & Pedals | Polyurethane w/ Steel Rails | Platform Pedals Included |
Sizing Guide
| Frame Size | Rider Height |
|---|---|
| 46 cm (Small) | Under 5'4" |
| 50 cm (Medium) | 5'4" - 5'7" |
| 54 cm (Large) | 5'7" - 5'11" |
| 58 cm (X-Large) | 5'11" - 6'2" |
We recommend visiting a local bike shop to ensure you get the perfect fit for your body.
Frame Geometry
| Measurement | 46cm | 50cm | 54cm | 58cm |
|---|---|---|---|---|
| Actual Top Tube Length | 499mm | 513mm | 537mm | 554mm |
| BB Drop | 50mm | 50mm | 50mm | 50mm |
| Chain Stay Length | 405mm | 405mm | 405mm | 405mm |
| Complete Bike Weight | 11,406g | 11,580g | 11,740g | 11,870g |
| Crank Arm Length | 170mm | 170mm | 170mm | 170mm |
| Effective Top Tube | 513mm | 522mm | 538mm | 555mm |
| Fork Length | 402mm | 402mm | 402mm | 402mm |
| Fork Offset | 45mm | 45mm | 45mm | 45mm |
| Head Tube Length | 105mm | 105mm | 105mm | 135mm |
| Head Tube Angle | 71.5° | 72° | 71° | 73° |
| Reach | 368mm | 374mm | 380mm | 386mm |
| Seat Tube | 460mm | 500mm | 540mm | 580mm |
| Seat Tube Angle | 74° | 74° | 73° | 73° |
| Stack | 508mm | 522mm | 536mm | 570mm |
| Standover Height | 733mm | 751mm | 775mm | 811mm |
| Wheel Base | 975mm | 985mm | 989mm | 1003mm |
Frequently Asked Questions
What is the standover height of the Core Line frame?
Standover height ranges from 28.8" on the 46cm frame to 31.9" on the 58cm frame. We recommend measuring your actual inseam to ensure at least 1 inch of clearance over the top tube.
Can I ride this bike if I’ve never ridden a fixie before?
Yes. Every Core Line bike ships with a Flip-Flop Hub, allowing you to easily switch between Fixed Gear and a standard Single-Speed Freewheel that allows you to coast.
Does the Earthstone come with brakes?
Yes, this model includes both front and rear dual-pivot forged alloy caliper brakes and levers, making it 100% street-legal and safe for urban riding.
What is the gear ratio on the Core Line?
The bike features a 44x16 gear ratio. This setup is optimized for stop-and-go city commuting, providing excellent off-the-line acceleration and manageable hill climbing.
How much does the Core Line weigh?
The average weight is approximately 24.5 lbs depending on the frame size, providing a stable, momentum-carrying feel in urban environments.
What's In The Box
- State Bicycle Core-LineArrives 90% assembled. Just attach the front wheel, pedals, and handlebars.
- Platform Pedal SetDurable platform pedals included out of the box.
- Braking SystemBoth Front and Rear caliper brakes are included in the box.
