4130 Road - Frame & Fork Set - Sapphire & Chrome
- Limited Availability
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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.
The 4130 Road frame and fork set in Sapphire & Chrome is a deep metallic blue frame and fork with a white State script on the down tube. It is the double butted chromoly frame and matching fork from State's 4130 Road, sold as the two parts that decide how a bike rides.
Every interface on it is an established standard: a threaded bottom bracket, a 27.2mm seatpost, quick release hubs and caliper rim brakes, with room for 700 x 40c tires and a 1x or 2x drivetrain.
Key Features
- Double butted 4130 chromoly. Frame and fork are both 4130 chromoly, double butted for strength without extra weight, and TIG welded.
- 1x or 2x. The frame takes a full 2x drivetrain up to a 50/34T compact double with a front derailleur, or a simple 1x.
- Room for 700 x 40c. Clearance for the frame and fork, the same on a 1x or 2x build. Run 28c for a fast summer setup or 38c to 40c for comfort on rough roads.
- Rim brake standards. Caliper rim brakes and 100mm front, 130mm rear quick release hubs, with decades of rim brake wheels and groupsets to build from.
- Geometry tuned by size. A 72° head angle on the 49 and 52 keeps toe overlap manageable, 73.5° on the larger sizes, and seat angles run from 74.5° down to 73° as the frame grows.
Specifications
| Frame | Double butted 4130 chromoly steel, TIG welded |
|---|---|
| Fork | 4130 chromoly steel, 1 1/8" threadless steerer |
| Headset | 1 1/8" threadless, included |
| Bottom bracket | 68mm English threaded |
| Seatpost | 27.2mm |
| Brakes | Rim brake, caliper |
| Hub spacing | 100mm front, 130mm rear, quick release |
| Drivetrain | 1x or 2x, max chainring 50/34T, standard derailleur hanger |
| Max tire | 700 x 40c (frame and fork) |
| Bottle mounts | 2 |
| Geometry | 425mm rear center and 45mm fork offset on every size, 65mm BB drop |
Sizes and Weights
| Size | Rider height | Inseam | Head angle | Weight |
|---|---|---|---|---|
| 49 cm | 5'5" to 5'8" | 26.5" to 28.5" | 72° | 7 lb 5 oz |
| 52 cm | 5'7" to 5'10" | 28.5" to 31" | 72° | 7 lb 8 oz |
| 55 cm | 5'9" to 6'0" | 31" to 32.5" | 73.5° | 7 lb 10 oz |
| 59 cm | 5'11" to 6'3" | 32.5" to 34" | 73.5° | 8 lb 0 oz |
| 62 cm | 6'2" to 6'7" | 34" to 36" | 73.5° | 8 lb 4 oz |
State weighs each size as frame, fork, headset and seatpost clamp. Sizes overlap on purpose: between two, the smaller gives a more nimble, upright fit and the larger stretches the rider out.
In the Box
- 4130 chromoly frame
- 4130 chromoly fork
- Headset
- Seatpost clamp
Questions
Is the fork included?
Yes. The set is the frame, a matching 4130 chromoly fork with a 1 1/8" threadless steerer, the headset and the seatpost clamp.
Disc or rim brakes?
Rim brakes. The frame and fork take caliper brakes and quick release hubs at 100mm front and 130mm rear, which makes it a good home for a rim brake groupset.
Which size fits?
State lists both rider height and inseam for each size and calls inseam the more reliable guide when choosing a cockpit.
What is needed to finish the build?
Wheels and tires, a 1x or 2x drivetrain, a crankset and bottom bracket for a 68mm English shell (square taper or external), caliper brakes, handlebar, stem, a 27.2mm seatpost, saddle and pedals.