Description
Tough as nails and ready for anything, the 4130 Trail Mountain Bike is a no-BS trail machine designed to crush climbs, rip descents, and handle whatever you throw at it. Whether you’re slashing singletrack, hammering urban shortcuts, or packing up for an epic bikepacking trip, this bike is built to send it.
And now it’s four bikes in one. Pick the fork that matches the riding you actually do — a 130mm RockShox suspension fork, a rigid 4130 steel fork with mounts everywhere, a featherweight rigid carbon fork, or no fork at all if you’re bringing your own.
*Bike pictured with Industry Nine Sector Carbon wheels and Seekrun S7 wireless dropper upgrades.
“A mountain bike of this caliber has no business being under $2,000.”
— BIKE Magazine
Bikepacking.com found the 4130 Trail’s geometry “quite similar to that of much more expensive bikes” — the payoff of an era where trail geometry has converged on something confidence-inspiring and genuinely high-performance, rather than something you pay extra to access.
— Bikepacking.com, “Inflation Buster”
Pinkbike noted the 65° head angle puts the 4130 in the same territory as bikes from their Value Bike Field Test, and that the steel frames aren’t heavy even measured against higher-end steel equivalents — a well-appointed frame with a sensible parts mix and clear upgrade paths where they matter.
— Pinkbike
Choose Your Fork
This is the biggest decision on the page, and it changes far more than weight. Going rigid doesn’t just delete the squish — it turns the 4130 Trail into a different category of bike. Read the handling note below the cards before you pick.
Standard
RockShox Psylo Silver RC — 130mm
This is the trail bike. 130mm of travel, 35mm uppers, a Motion Control damper and a Solo Air spring — at this price you’d normally get spindly stanchions and a shrug of a damper. Keeps the slack 65° front end that lets you point it down steep, chunky, rooted ground and stay off the brakes. If you ride rough terrain and want one bike that does all of it, stop here.
- Travel: 130mm
- Axle-to-crown: 550mm
- Offset: 44mm
- Steerer: Tapered 1-1/8″ to 1.5″
- Weight: 5 lb 12 oz
- Mounts: None
$1,499.99
Rigid — Carbon
Carbon Rigid Fork
This is the one that transforms the bike. 563 grams takes more than four pounds off the front end — you feel it the instant you lift the front wheel, and on every climb after. Carbon damps the high-frequency buzz that makes rigid forks tiring on hardpack. Combined with the shorter axle-to-crown, it’s the fastest, liveliest version of this bike: a genuine all-terrain machine for dirt roads, bikepacking, and big mixed-surface days.
- Axle-to-crown: 495mm
- Offset: 49mm
- Steerer: Tapered 1-1/8″ to 1.5″
- Weight: 563g (1 lb 6 oz with axle)
- Mounts: 3 cargo per leg · rack (no fender mounts)
- Standard: ISO 4210-M passed
$1,399.99
$100 less than suspension · 4 lb 6 oz lighter
Rigid — Steel
4130 Chromoly Rigid Fork
This turns the Trail into a loaded ATB. Five cargo mounts per leg plus fender and rack mounts — more places to bolt gear than any fork we make. The shorter axle-to-crown drops the front end, so the bike sits lower and steers quicker: a dirt-road and bikepacking machine that still holds its own on singletrack. Steel takes abuse, shrugs off a scratch, costs the least to replace, and never needs a service.
- Axle-to-crown: 492mm
- Offset: 50mm
- Steerer: Straight 1-1/8″ (30mm cone included)
- Weight: 4 lb 0 oz
- Mounts: 5 cargo per leg · fender · rack
- Rider limit: 120kg
$1,199.99
$300 less than suspension · 1 lb 12 oz lighter
No Fork
Frame-Up — Bring Your Own
For riders who already have a fork they love, or who are building something specific. You get the complete bike, fully specced, minus the fork and headset crown race. Everything else is identical.
- Head tube: Tapered
- Front hub spacing: 15 x 110mm Boost
- Designed around: 550mm axle-to-crown
- Brakes: 180mm rotor — check your fork’s mount
- Not included: Fork, thru-axle, crown race
$1,099.99
$400 less than suspension
Going rigid turns this into an ATB. The suspension fork measures 550mm axle-to-crown. The steel rigid is 492mm and the carbon rigid is 495mm — roughly 55–58mm shorter. Dropping the front end that much steepens the head angle, lowers the bottom bracket, and shortens the wheelbase.
What you get is not a trail bike with the suspension taken off. It’s a different bike: lighter, quicker-steering, and far more efficient everywhere that isn’t a steep technical descent — dirt roads, doubletrack, bikepacking routes, hardpack singletrack, and the commute in between. That’s an all-terrain bike, and it’s exactly what these forks are for.
Pick suspension if you ride rough, steep, technical ground and want the slack 65° geometry the reviews above describe. Pick rigid if you want a fast, light, go-anywhere bike that you’ll ride further than you meant to.
Both rigid forks ship with a 300mm uncut steerer and a 15 x 110mm thru-axle. The steel fork also includes the 30mm cone it needs to fit the tapered head tube, and a 180mm brake adaptor.
Weight by build
Measured without pedals. The carbon fork takes the 4130 Trail from a 32-pound trail hardtail to a 28-pound bike — a bigger swing than almost any other single part you could change.
| Fork | XS/S | S/M | M/L | XL |
|---|---|---|---|---|
| Carbon rigid | 27 lb 13 oz | 27 lb 14 oz | 28 lb 2 oz | 28 lb 5 oz |
| Steel rigid | 30 lb 7 oz | 30 lb 8 oz | 30 lb 12 oz | 30 lb 15 oz |
| Suspension | 32 lb 3 oz | 32 lb 4 oz | 32 lb 8 oz | 32 lb 11 oz |
| No fork | 26 lb 7 oz | 26 lb 8 oz | 26 lb 12 oz | 26 lb 15 oz |
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. (Suspension build. Rigid builds sit lower and steer quicker — see above.)
- 12-Speed Shimano Deore Drivetrain: A tough-as-hell 1×12 setup with Deore M6100 shifter and rear derailleur, paired with an 11–50T cassette for big climbing range and clean, reliable shifting.
- 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.
- Four Fork Options: Suspension, rigid steel, rigid carbon, or none at all. One frame, four very different bikes.
- Universal Derailleur Hanger (UDH): Future-proofed for modern drivetrain tech and easier maintenance, because you shouldn’t be stressing parts availability.
- Dropper Ready — Cabled or Wireless: A 31.6mm seat tube with internal routing means a cabled dropper drops right in, and the frame is equally happy running a fully wireless post with zero cables to route.
- Threaded Bottom Bracket (73mm BSA): Reliable, creak-free, and easy to service.
- More Mounting Points: Triple bottle cage mounts on the downtube — and with the steel rigid fork, five more per fork leg.
The drivetrain
Shimano Deore is the part of the lineup where the price stops mattering and the performance starts. M6100 gets the same shift ramps and chain management philosophy as the tiers above it, in a package built to survive being ignored.
An 11–50T cassette against the 32T ring gives 454% of range — a low gear at 0.64:1 that will get you up genuinely steep, loose climbs, and enough at the top for fire roads and flat transfers. One shifter, one derailleur, nothing to cross-chain, and no front shift to fumble mid-climb.
No drama, no fluff. Crisp shifting that keeps working when things get dusty, muddy, and questionable.
Build & Customize
Frame Size
- XS/S: Riders 5’1″ – 5’5″
- S/M: Riders 5’5″ – 5’10”
- M/L: Riders 5’10” – 6’1″
- XL: Riders 6’1″ – 6’5″
Choose Your Wheelset
Included
WTB i30 TCS 29″ Wheelset
- WTB i30 TCS tubeless-ready rims — wide profile for tire support and traction
- Boost hubs (110/148mm) with sealed bearings
- WTB Trailboss TCS 29 x 2.4″ tubeless-ready tires — aggressive tread for grip and speed
- Tubeless valves included
Upgrade
Industry Nine Sector Carbon (1/1)
- WR1 Convergence carbon rims, 29mm internal — built to survive repeated impacts and still mute trail chatter
- Industry Nine 1/1 hubs, 90 points of engagement at 4° — roughly twice as responsive as a typical older hub
- Sapim Race J-bend spokes — any shop in any town can fix this wheel
- Handbuilt in Asheville, NC, and backed by a lifetime carbon rim warranty
+$999.00
reg. $1,549.00 — save $550
Choose Your Seatpost — a dropper is the single biggest upgrade you can make to a trail bike. Two ways to get one.
Included
SBC 31.6mm Seatpost
- Quick-release seatpost clamp for on-the-trail adjustments
- Frame is dropper-ready whenever you are — 31.6mm with internal routing
Upgrade — Cabled
PNW Range Dropper & Lever
- Sealed air cartridge — no pressure to top off, consistent return ride after ride
- Serviceable at home, backed by PNW’s lifetime warranty
- Routes internally through the frame
Travel by size: XS — 125mm · S/M & M/L — 150mm · XL — 175mm
+$199.99
Upgrade — Wireless
Seekrun S7 Wireless Dropper Bundle
- Fully wireless actuation with a bar-mounted remote
- No cable to route, no housing to trim, no drag to fight — and internal routing on a hardtail is the fussiest job on the bike
- Roughly 9,000 drops per charge, IP67 sealed
- Bundle includes post, remote, battery, and charger
Travel by size: XS — 120mm · S/M & M/L — 150mm · XL — 175mm
Both droppers are sized to your frame automatically — pick your frame size and we’ll send the right travel.
Choose Your Brakes
Included
Tektro HD-M275 Hydraulic Disc
- 2-piston hydraulic with 180mm rotors front and rear
- Confidence-inspiring stopping power in all conditions
Upgrade
SRAM DB4 4-Piston Hydraulic
- Four pistons instead of two — more pad contact, more power, better modulation
- The upgrade that matters most on long, steep descents where 2-piston brakes start to fade
- Worth it if you ride chunky terrain or carry weight
Choose Your Handlebar
Included
SBC Low Rise Alloy — 770mm
- 770mm wide, 35mm clamp — wide and stable for all-mountain control
- Paired with an SBC 3D-forged alloy stem, short and responsive
Upgrade
PNW Loam Carbon Handlebar
- UD carbon with a chatter-absorbing layup — the bar is where trail buzz reaches your hands
- Anti-fatigue geometry for long days
- The upgrade you feel on every ride, not just the rough ones
+$159.99
Standard Equipment
- Frame: Double-butted 4130 Chromoly steel, UDH, 73mm BSA threaded BB, internal dropper routing
- Fork: Your choice — see Choose Your Fork above
- Drivetrain: 1×12 Shimano Deore
- Shifter & Rear Derailleur: Shimano Deore M6100
- Cassette: 11–50T, 12-speed
- Chain: SUMC 12-speed
- Crankset: SBC 32T narrow-wide, 165mm, direct mount
- Saddle: Trail-ready PU pad with steel rails
- Stem: SBC 3D-forged alloy, 35mm clamp
- Pedals: Not included
Max Tire Clearance
- Frame: 29″ up to 2.6″ / 27.5″ up to 3.0″
- Suspension fork: 29″ up to 2.6″
- Rigid steel fork: 29″ up to 3.0″
- Rigid carbon fork: 29″ up to 3.0″
The rigid forks clear more rubber than the frame does — on a matched pair of tires the frame’s 2.6″ rear is the limit for the whole bike.
Want it wireless?
The same frame is available with SRAM Eagle Transmission — hangerless, no limit screws to set, no cable to route, and 520% of range from a 10–52t cassette. All four fork options are available there too.
⚠️ Assembly Required: This bike ships partially unassembled and will require crank installation, wheel installation, and fork setup (the steerer tube comes uncut). It will also need general setup and tuning, including derailleur indexing and limit screw adjustment. We strongly recommend professional assembly to ensure the safest and highest quality ride experience.
*Bike pictured with Industry Nine Sector Carbon wheels and Seekrun S7 wireless dropper upgrades.
Want to get technical? .
Press quotations from BIKE Magazine, Bikepacking.com, and Pinkbike, referenced for context and not endorsements of this specific build configuration. Reviews were conducted on the suspension-fork build.
