Fit
Find your size
Sizes overlap on purpose. Between two, the smaller is the more playful bike and the larger is the more stable one at speed. Every size shares a 426.5mm chain stay, a 65 degree head angle and a 44mm fork offset, so the handling stays consistent across the range.

4130 Trail Overview
The State Bicycle Co. 4130 Trail in Hammered Tobacco Powdercoat is a steel hardtail mountain bike with a 65 degree head angle, 130mm of RockShox travel and a Shimano Deore 1x12 drivetrain. The finish is a hammered, textured bronze brown with white State logos, on tan wall WTB Trailboss tires. The part that matters most is the fork: a RockShox Psylo Silver RC with 35mm uppers, a Solo Air spring and a Motion Control damper, where hardtails near this price usually get a coil fork on 30mm legs.
The drivetrain is Deore M6100, a 32T ring against an 11 to 50T cassette. That is 454 percent of range from one shifter, with a low gear of 0.64 to 1 for steep loose climbing and nothing to cross chain. The frame carries a universal derailleur hanger, internal dropper routing in a 31.6mm seat tube, a threaded bottom bracket and three bottle mounts on the down tube.
Skip it for full suspension or a light bike. This is a steel hardtail at about 32 pounds. What that weight buys is a frame that shrugs off rocks, a fork that works, and a parts list any shop can service.
Standards you can build on
Every interface on this bike is a current standard. A universal derailleur hanger, a 73mm BSA threaded bottom bracket, a 31.6mm seat tube with internal routing, Boost 110 and 148mm hub spacing, and a 35mm bar clamp. Nothing here is proprietary, so the upgrade path is open and a replacement part is a part any shop already stocks.
Questions before buying? Call 718.808.6415, Monday to Friday.
A STEEL HARDTAIL THAT TAKES A HIT
The frame is double butted 4130 chromoly. Thicker at the welds where the load goes, thinner in the middle of the tube where it does not, which is how a steel frame stays strong without turning into a girder. Steel also bends rather than cracks, so a rock strike that would end a light aluminum frame usually just leaves a mark.
The dropout is a Universal Derailleur Hanger, the same part found on a few hundred other current frames, so a bent hanger is a shelf item rather than a special order. The bottom bracket is a 73mm BSA thread, which runs quiet and comes out with a tool every shop owns.

130MM OF ROCKSHOX PSYLO
The fork is where cheap hardtails are usually cheap: a coil spring, 30mm legs and a damper that is really just a hole. The 4130 Trail gets a RockShox Psylo Silver RC instead, with 130mm of travel on 35mm upper tubes, the diameter that keeps the front end from flexing under hard braking into a rocky corner.
Inside is a Solo Air spring, set with a shock pump to the rider's weight, and a Motion Control damper with an external compression adjuster. The steerer ships uncut so a shop can set bar height before trimming it. Axle to crown is 550mm with a 44mm offset, on a 65 degree head angle.


Shimano Deore 1x12
M6100 shifter and rear derailleur on a 32T ring and an 11 to 50T cassette, 454 percent of range from one lever.

WTB Trailboss 2.4
Tubeless ready 29 x 2.4 inch tires on WTB i30 rims with Boost hubs, and the valves are in the box.

770mm Low Rise Bar
A 35mm clamp, 12mm rise and 20mm of backsweep on a short forged alloy stem.

Dropper Ready
A 31.6mm seat tube with internal routing, and the stock post has a quick release collar for trailside height changes.

Threaded Bottom Bracket
A 73mm BSA shell that stays quiet and comes out with a tool every shop owns, behind a 32T narrow wide ring.
| Frame | Double butted 4130 chromoly steel, UDH dropout, Boost 148mm thru axle, internal dropper routing, three bottle mounts |
|---|---|
| Fork | RockShox Psylo Silver RC, 130mm travel, 35mm stanchions, Solo Air with Motion Control damper, 550mm axle to crown, 44mm offset, tapered steerer |
| Headset | SBC sealed bearing, tapered |
| Bottom Bracket | 73mm BSA threaded, 29mm diameter |
| Crankset | SBC 32T narrow wide, 29mm DUB spindle, 165mm arms, direct mount |
| Cassette | 11 to 50T, 12 speed |
| Chain | SUMC, 12 speed |
| Shifter | Shimano Deore M6100, 12 speed |
| Rear Derailleur | Shimano Deore M6100, 12 speed |
| Brakes | Tektro HD-M275 hydraulic disc, 2 piston, 180mm rotors front and rear |
| Rims | WTB i30 TCS 29 inch tubeless ready, 32h, tubeless valves included |
| Spokes | Stainless steel, 14 gauge |
| Hubs | Sealed bearing, Boost 15 x 110mm front / 12 x 148mm rear |
| Tires | WTB Trailboss TCS, 29 x 2.4 inch, tubeless ready |
| Handlebar | SBC low rise alloy, 770mm width, 35mm clamp, 12mm rise, 20mm backsweep |
| Stem | SBC 3D forged alloy, 35mm clamp |
| Seatpost | SBC 31.6mm x 350mm, quick release collar |
| Saddle | Polyurethane with steel rails |
| Pedals | Not included |
| Max Tire Clearance | Frame 29 x 2.6 inch or 27.5 x 3.0 inch, fork 29 x 2.6 inch |
| Weight | 32 lb 3 oz (XS/S) to 32 lb 11 oz (XL), complete bike without pedals |
| — Frame geometry — | XS/S / S/M / M/L / XL |
| Chain Stay | 426.5mm / 426.5mm / 426.5mm / 426.5mm |
| Fork Offset | 44mm / 44mm / 44mm / 44mm |
| Head Tube | 100mm / 110mm / 120mm / 130mm |
| Head Tube Angle | 65° / 65° / 65° / 65° |
| Seat Tube | 380mm / 405mm / 430mm / 460mm |
| Seat Tube Angle | 74.5° / 74.4° / 74.4° / 74.4° |
| Top Tube (Effective) | 594.7mm / 622.6mm / 645.5mm / 673.3mm |
| — Rider height — | 5'1" - 5'5" / 5'5" - 5'10" / 5'10" - 6'1" / 6'1" - 6'5" |
WHAT'S IN THE BOX
4130 Trail Complete Bike
Tubeless Valves
Belcopia Bikes Support
Questions before buying
What size 4130 Trail should I get?+
State lists the XS/S for riders 5 foot 1 to 5 foot 5, the S/M for 5 foot 5 to 5 foot 10, the M/L for 5 foot 10 to 6 foot 1, and the XL for 6 foot 1 to 6 foot 5. Sizes overlap on purpose. Between two, the smaller is the more playful bike and the larger is the more stable one at speed.
Is the bike in the photos the bike that ships?+
The studio photos on white show the bike as it ships: WTB i30 wheels on Boost hubs, tan wall WTB Trailboss tires and a 31.6mm SBC seatpost with a quick release collar. State notes that some of its photos show Industry Nine Sector Carbon wheels and a Seekrun S7 wireless dropper. Those are paid upgrades and are not included, and neither are pedals.
What is a UDH and why does it matter?+
A Universal Derailleur Hanger is the industry standard version of the small aluminum bracket the rear derailleur bolts to. It is the same part across a few hundred current frames, so a bent one is a same day fix at any shop that stocks UDH hangers instead of a State specific order.
Can the 4130 Trail take a dropper post?+
Yes. The seat tube is 31.6mm with internal routing already in the frame, so a cabled dropper routes through it and a wireless post needs no routing at all. State sizes dropper travel by frame: 125mm on an XS/S, 150mm on an S/M and M/L, and 175mm on an XL.
Will wider or smaller wheels fit?+
The frame clears a 29 inch tire up to 2.6 inches, or a 27.5 inch tire up to 3.0 inches. The suspension fork clears a 29 inch tire up to 2.6 inches. It ships on 29 x 2.4 inch WTB Trailboss.
How much does the 4130 Trail weigh?+
State lists complete bike weights, without pedals, of 32 lb 3 oz on an XS/S, 32 lb 4 oz on an S/M, 32 lb 8 oz on an M/L and 32 lb 11 oz on an XL. The RockShox Psylo fork accounts for 5 lb 12 oz of that.
4130 Trail on video
Introducing the 4130 Trail Mountain Bike
Authorized Dealer for the World's Toughest


















