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Ships within 48 hours · Estimated delivery Sep 25 - Sep 30
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Description
gravel bike with hydraulic brakes 4130 All-Road - Root Beer (12 Speed / UDH) Extra Small ( Riders 5'1" - 5'6")The 4130 All Road is built for riders who want to do everything gravel races, bikepacking missions, commutes, trail days without buying multiple bikes or compromising on any of them. 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
The 4130 All-Road is built for riders who want to do everything — gravel races, bikepacking missions, commutes, trail days — without buying multiple bikes or compromising on any of them. 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
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
💡 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
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
All-Road Suspension Fork
- 40mm travel — takes the edge off rough terrain
- Noticeably smoother on chunky gravel and trails
- Regular MSRP $450
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
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
Wheels
Dual Wheelset (700c + 650b)
- Both wheel sizes and tire setups
- Rotors, cassette, and tubes included
- Swap between setups in minutes
DT Swiss Alloy Wheelset
- Available in 650b or 700c
- A meaningful step up in stiffness, weight, and hub quality
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
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.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
Bringing a 1976 MG Midget to the modern world!
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
I've been restoring a 1976 MG Midget barn find. I bought some Sinless liner to help make the car rattle less and feel more solid.
This product is easy to cut, easy to install, and extremely sticky. I used it to line the trunk, the interior, and even some under the hood of the old MG. The adhesive stands up to the brutal temperature of the engine bay, and when (by accident) some fuel spilled onto the foam, it didn't fall apart or turn to mush.
Thanks to Siless, the MG now feels like a modern car. The floor pans feel much more solid, the doors make a heftier thud when you close them, and the trunk no longer sounds like a percussion instrument when you touch it.
If you know what you're doing, this product will transform the feel of a car. I found that 36 sq ft was enough for my MG Midget, but for a bigger car I would want more. The pattern on the back helped me to cut perfectly measured squares and rectangles. The foam itself doesn't have a strong odor, it works super well, and has held up to several months of changing temperatures (in the Midwest US.)
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Reviewed in the United States on November 11, 2025
★★★★★ 5
Excellent Car Sound Deadening and Heat Insulation Solution
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
If you're looking for a high-quality car sound deadening and heat insulation material, then the Siless Liner 157 (4 mm) mil 36 sqft is definitely worth considering. This product is designed to offer superior noise reduction and heat insulation for your car, making your driving experience more comfortable and enjoyable.
The closed-cell foam material used in this product is of premium quality, and it effectively blocks out external noise and vibrations. This means you can enjoy a quieter and more peaceful ride, even on noisy roads. In addition, the Siless Liner 157 also provides excellent heat insulation, which can help keep your car cooler in hot weather.
One of the best things about this product is that it's very easy to install. You don't need any special tools or equipment, and the material can be easily cut to fit any shape or size. It's also very lightweight and flexible, which makes it easy to work with.
Overall, the Siless Liner 157 (4 mm) mil 36 sqft Car Sound Deadening Closed Cell Foam & Heat Insulation mat is an excellent choice for anyone looking to improve the comfort and performance of their car. It's a high-quality product that delivers on its promises, and it's definitely worth the investment.
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Reviewed in the United States on March 12, 2023
★★★★★ 4
Heavy-Duty That Works!
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
This extreme sound deadening mat performs well for reducing road noise and vibration. It feels dense and adheres securely when properly applied. Once installed, it noticeably improves interior quietness.
Overall, it’s a strong choice for more serious sound insulation projects.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Good product, quite sticky I must say.
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Worked for my van insulation
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Good stuff
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Good stuff, easy to use, self adhesive backing contours around curves easily and works great.
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Reviewed in the United States on April 29, 2026