4130 Trail - Mountain Bike - Frame Set - West Sunset

Customer Reviews

Based on 1 review
100%
(1)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
N
Norm Tyler (Spicewood, US)
Soft and Supple Hardtail

This is a great riding frame. I buy myself a hardtail frame every year and move as many components over as I can, then buy the rest. Mine looks darker than the picture I saw when I ordered it, but great finish. I went from riding an aluminum hardtail with similar geometry to this one and it almost feels like I have a short travel rear shock. Very nice feel. I did have an issue with my Maxxis Minion 2.5s rubbing the left side of the yoke (I think that's what they call it where the stays connect to the seat tube). The tire only rubbed when I pedaled hard or put extra weight on the rear. I was able to dish my wheel over a little toward the drive side and now it's okay but I did eat through the paint to bare metal, so my next tires will be 2.4s max. Frame does not include a chain stay protector. Like a noob, I realized this when my chain was clanking around and took a bite out of my paint. I immediately bought an Amazon special peel n stick and fixed it. I think State Bicycle should make their own because I am sure it would look better with their bikes. Everything went together well. Bottom bracket threads were clean and confirmed 73mm and standard threads. The 44/44 (straight tube) headset gave me a little trouble, but I finally got it to seat nice and straight; the crown race included is a cheap one with a slit in it; I used the cane creek one I had on my fork already and it worked with the headset. I replaced the included QR seat post clamp with a NQR one but the one included was fine. Great ride. Climbs as well as it descends, maybe even better. Very easy pedal compared to my previous 29er with most of the same components. The cable guides under the top tube are the screw-in clamp-style kind are a bit fussy, and my brake hose seemed too large for them to clamp it nicely, but they work. The threaded holes for the chainring guard and the brake post mounts had a bit of paint that needed to be cleaned out, but I got done in a couple of minutes. This is my 3rd State Bicycle and my favorite as far as style and ride. Great quality. Very pleased.

4130 Trail - Mountain Bike - Frame Set - West Sunset
Trail-Ready From the Core

The perfect foundation for your next hardtail shredder. Made from double-butted 4130 Chromoly steel, this frame is built to take a beating while delivering a smooth, lively ride feel. With progressive trail geometry, UDH compatibility, and clearance for big rubber, it’s ready for anything from techy singletrack to loaded bikepacking missions.
As low as $22.39 / Month

Customize your build
or
Pay Per Month

The 4130 Trail Frame & Fork Set is the perfect foundation for your next hardtail shredder. Made from double-butted 4130 Chromoly steel, this frame is built to take a beating while delivering a smooth, lively ride feel. With progressive trail geometry, UDH compatibility, and clearance for big rubber, it’s ready for anything from techy singletrack to loaded bikepacking missions.

Quick Features:

  • Progressive Trail Geometry: A slack 65° head angle, low-slung top tube, and long front-center keep things stable when the trail gets rowdy while maintaining playful agility in the corners.
  • Universal Derailleur Hanger (UDH) Compatibility: Future-proofed for modern drivetrain tech and easier maintenance, because you don’t need to be stressing parts availability.
  • Double-Butted 4130 Chromoly Steel Frame: Tougher than aluminum and smoother than carbon, our double-butted 4130 Chromoly frame absorbs trail chatter and takes a beating without flinching.
  • Internal Dropper Routing: With a 31.6mm seat tube and internal cable routing, upgrading to a dropper post is hassle-free.
  • Threaded Bottom Bracket (73mm BSA): Reliable, creak-free, and easy to service.
  • More Mounting Points: Triple bottle cage mounts on the downtube — because adventure doesn’t come with limits.
  • RockShox Psylo Silver RC – 130mm Travel, 35mm Stanchions: The RockShox Psylo Silver RC features 35mm steel upper tubes for enhanced steering precision and stiffness when blasting technical descents. The Motion Control damper and Solo Air spring keep things plush, while premium bushings reduce friction for a buttery-smooth ride over rough terrain.

Build and Customize

FRAME SIZE:

  • XS/S: 5'1" to 5’5"
  • S/M: 5'5" to 5'10"
  • M/L: 5'10" to 6'1"
  • XL: 6'1" to 6'5"

Also Included:

  • Headset
  • Thru-Axles  Front & Rear
  • Universal Derailleur Hanger
  • Cable Guides
  • Quick Release Seatpost Clamp

MAX TIRE CLEARANCE:

  • Frame: 29” Wheels: Up to 2.6” / 27.5” Wheels: Up To 3.0”
  • Fork: 29" Wheels: Up to 2.6" / 27.5' Wheels: N/A

RETURNS & Exchanges: State Bicycle Co. proudly offers FREE RETURNS for EXCHANGES - please see details of our Return Policy here.

SHIPPING:  Most in-stock items ship within 1 business day! Tracking information is provided upon shipment. Learn more about our Shipping Policy

ASSEMBLY: Complete Bicycles will ship 90% built and require only basic tools and knowledge to complete the build. However, a fully assembled bicycle also needs to be tuned and adjusted (oftentimes with specialty tools). We strongly encourage having your bike professionally assembled to validate your warranty and to ensure a safe and lasting ride.

WARRANTY:  Warranty activated when you submit proof of professional assembly. 

  • 5-year Warranty on all bicycle frames
  • 1-year Warranty non-consumable parts
  • 2-year Warranty on Essor USA products

Learn more about our Warranty Policy.

Size Charts and Specs:  Detailed Size Charts and Specs can be found here:  Size Charts & Specs.

SUPPORT:  We pride ourselves on having a friendly and knowledgeable staff. Contact us and we'd be happy to help you out in any way we can.

Customer Reviews

Based on 1 review
100%
(1)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
N
Norm Tyler (Spicewood, US)
Soft and Supple Hardtail

This is a great riding frame. I buy myself a hardtail frame every year and move as many components over as I can, then buy the rest. Mine looks darker than the picture I saw when I ordered it, but great finish. I went from riding an aluminum hardtail with similar geometry to this one and it almost feels like I have a short travel rear shock. Very nice feel. I did have an issue with my Maxxis Minion 2.5s rubbing the left side of the yoke (I think that's what they call it where the stays connect to the seat tube). The tire only rubbed when I pedaled hard or put extra weight on the rear. I was able to dish my wheel over a little toward the drive side and now it's okay but I did eat through the paint to bare metal, so my next tires will be 2.4s max. Frame does not include a chain stay protector. Like a noob, I realized this when my chain was clanking around and took a bite out of my paint. I immediately bought an Amazon special peel n stick and fixed it. I think State Bicycle should make their own because I am sure it would look better with their bikes. Everything went together well. Bottom bracket threads were clean and confirmed 73mm and standard threads. The 44/44 (straight tube) headset gave me a little trouble, but I finally got it to seat nice and straight; the crown race included is a cheap one with a slit in it; I used the cane creek one I had on my fork already and it worked with the headset. I replaced the included QR seat post clamp with a NQR one but the one included was fine. Great ride. Climbs as well as it descends, maybe even better. Very easy pedal compared to my previous 29er with most of the same components. The cable guides under the top tube are the screw-in clamp-style kind are a bit fussy, and my brake hose seemed too large for them to clamp it nicely, but they work. The threaded holes for the chainring guard and the brake post mounts had a bit of paint that needed to be cleaned out, but I got done in a couple of minutes. This is my 3rd State Bicycle and my favorite as far as style and ride. Great quality. Very pleased.