The Unit X is a steel mountain bike, bikepacking rig, gravel explorer, and long-haul touring machine that has built a dedicated following for good reason. Its Kona Cromoly frame, rigid fork, and wide-range 12-speed drivetrain deliver a simple, durable ride that's equally at home on singletrack, forest roads, and fully loaded adventures. Modular dropouts add even more flexibility, letting you convert it to a single speed when a stripped-back setup calls your name. It's difficult to pigeonhole, surprisingly practical, and the kind of bike that makes more sense the farther you ride it. The Unit X isn't trying to be everything to everyone, and that's exactly what makes it so appealing.
Key Features
- Reynolds 520 butted cromoly frame combines durability, comfort, and long-term reliability.
- Rigid Kona Plus fork keeps maintenance low while providing predictable handling and ample cargo mounting options. Suspension corrected for 100mm
- Shimano Deore 12-speed drivetrain with a wide 10-51T cassette offers a broad gear range for steep climbs and loaded adventures.
- Modular dropouts allow conversion to a single-speed setup.
- 29 x 2.6" Maxxis Rekon tires provide traction and comfort across dirt, gravel, and rough terrain.
- Shimano MT410 hydraulic disc brakes deliver reliable stopping power in varying conditions.
- WTB ST i30 TCS rims offer a strong platform for wide tires and off-road riding.
- Equally suited to mountain biking, gravel exploration, bikepacking, and long-distance touring.
Specs
- FRAME: Reynolds 520 Butted Cromoly
- SIZES: S, M, L, XL
- FORK: Kona Plus Fork 110mm spacing
- CRANKSET: Shimano Deore 12spd 32t / S 170mm / M-XL 175mm
- BOTTOM BRACKET: Shimano BSA 73mm
- PEDALS: Kona JS2
- CHAIN: Shimano Deore 12spd
- CASSETTE: Shimano Deore 10-51t 12spd
- CHAINGUIDE: n/a
- FRONT DERAILLEUR: n/a
- REAR DERAILLEUR: Shimano Deore
- SHIFTER: Shimano Deore 12spd
- BRAKE CALIPERS: Shimano MT410 Hydraulic
- FRONT BRAKE ROTOR: Shimano RT10 180mm
- REAR BRAKE ROTOR: Shimano RT10 160mm
- BRAKE LEVERS: Shimano MT410 Hydraulic
- HEADSET: FSA No.10 ZS44/ZS44
- HANDLEBAR: Kona XC/BC Riser / Width 750mm
- STEM: Kona XC/BC / Length S-M 50mm / M-L 60mm
- SEATPOST: Kona Thumb w/Offset 31.6mm / S-M 350mm / L-XL 375mm
- SEAT CLAMP: Kona Clamp 34.9mm
- GRIPS: Kona Key Grip Lock-on
- SADDLE: WTB Volt Medium
- FRONT HUB: Formula 15x110mm
- REAR HUB: Formula 12x148mm MS
- SPOKES: Stainless 2.0mm Black
- FRONT RIM: WTB ST i30 2.0 TCS
- REAR RIM: WTB ST i30 2.0 TCS
- FRONT TIRE: Maxxis Rekon TR 29x2.6"
- REAR TIRE: Maxxis Rekon TR 29x2.6"
- PAINT COLOR: Gloss Metallic Dark Faux Raw w/ Tonal Charcoal Decals
*All specifications are subject to change without notice
Geometry
| |
Size |
S |
M |
L |
XL |
| 1 |
ST Length |
370 |
420 |
470 |
530 |
| 2 |
TT Length |
582 |
610 |
637 |
675 |
| 3 |
Reach |
425 |
450 |
475 |
510 |
| 4 |
Stack |
588 |
597 |
606 |
615 |
| 5 |
Standover |
695 |
731 |
768 |
810 |
| 6 |
HT Angle |
68.0 |
68.0 |
68.0 |
68.0 |
| 7 |
HT Length |
110 |
120 |
130 |
140 |
| 8 |
ST Angle |
75.0 |
75.0 |
75.0 |
75.0 |
| 9 |
CS Length |
430 |
430 |
430 |
430 |
| 10 |
BB Drop |
65 |
65 |
65 |
65 |
| 11 |
BB Height |
310 |
310 |
310 |
310 |
| 12 |
Wheelbase |
1115 |
1144 |
1173 |
1211 |
| 13 |
Front Center |
693 |
722 |
750 |
789 |
| 14 |
Fork Length |
470 |
470 |
470 |
470 |
| 15 |
Fork Offset |
50 |
50 |
50 |
50 |
