V3.1 UPDATES
V3.1 brings the biggest update to the Mini yet. The frame now uses the same rack-mounting system as the Cargo and Mini-Max, opening the door for upgrades such as the tilting rack bracket. The rack itself has been redesigned with round tubing for a cleaner look, and for dynamo-light compatibility. With the new rack comes new webbing, using the v2 dual-axis design for the round-tube rack that also comes with the Nano.
For the update, we’re also introducing the V3.1 fork, which has already been added to the Cargo and Mini-Max models.
The biggest change is the replacement of the XS with a Step Through (ST) version, to allow for a bigger audience to be able to fit the Mini and make the bike easier to use for anyone wanting to run rear-mounted child seats.


The OMNIUM Mini is a fast, agile reimagining of the short john bike, built to handle surprisingly heavy loads. Its compact size makes it easy to manoeuvre and integrates simply with both smaller residences and multimodal transport.
The front rack is ideal for anything too bulky and uncomfortable to carry on your back. You can keep your belongings in sight and carry serious weight all day without the bike feeling overloaded.
The 29-inch rear wheel helps the Mini effortlessly keep pace over longer distances, giving it an edge over other short john designs. Full rear rack mounts let you attach a range of panniers or rack mounted child seats, ideal for urban commuters.
Unlike many cargo bikes, the Mini rides like a regular bike. It feels quick, stable, safe and intuitive. Adapting to the Mini takes minutes and you quickly wonder how you managed without it.
DESIGN
The Mini is designed around a 55 mm (2.15 inch) tyres front and rear. Bigger tyres come with plenty of benefits, and these are the ones that matter most. High volume tyres run at lower pressure, which gives you a natural layer of cushioning between you and the road. The result is more comfort, more control, and an easier ride on rough surfaces like gravel, cobblestones, and battered city streets.
We have also updated the frame with the new v3.1 segmented fork that still comes with thru axles. Thru axles first appeared on downhill mountain bikes in the late 90s, and these days they are the standard on most disc brake bikes. They make perfect sense on a cargo bike. This setup increases stiffness, improves braking performance, handles heavy loads more securely, and reduces the chance of incorrect installation or brake rub.


SPECS

GEO


For the V3.1 iteration of the Mini, we have chosen to replace the XS with a new Step Through size.
The new size still accommodates people under 165cm but also opens up the possibility for taller people that for any reason wants a different entry point to a horizontal top tube to now also be able to fit the Mini.
| Frame Material | Double Butted Chromoly Steel Frame |
| Sizes | ST (Step Through), S, M, L, XL |
| Rack Dimensions | 400x500mm |
| Seat post diameter | 31,6mm |
| Seat post clamp size | 34mm (ST 34,9mm) |
| Fork Brake Mount | IS – Disc only |
| Rear Brake Mount | Dependent on insert choice – Disc only |
| Front Wheel | 406, 15x100mm spacing |
| Rear Wheel | TA Insert: 622, 12 x 142mm spacing, disc only QR Insert: 622, 10 x 135mm spacing, disc only |
| Tyre Clearance Front | 55mm with mudguards |
| Tyre Clearance Rear | 55mm with mudguards |
| Thru Axle Front | 15×100, 125mm long, 17mm thread length, 1.5mm pitch |
| Thru Axle Rear | 12×142, 172mm long, 19mm thread length, 1.75mm pitch |
| Headset | 1 1/8” Ahead |
| Bottom Bracket | 68mm BSA |
| Gears | For 1x rear derailleur gear, single speed or internal hub gears |
| Rack Bolt | M15 x 15mm |
| Rack Weight | TBU |
| Frame Kit Weight | TBU |
| Maximum Loading Weight on Front Rack | 50kg |
| Maximum Total Loading Weight Incl. Rider | 125kg |
The Mini V3.1 uses the same rack-mounting specs as the Cargo and Mini-Max, opening the door for upgrades such as the tilting rack bracket – Because if the changes to the mounting interface, the Mini v3.1 is not able to accommodate the the square tube rack from previus Mini interations
| Mini V3.1 | Step Through | S (52) | M (54.5) | L (57) | XL (60) |
| STL – seat tube length (c-t) | 520 | 520 | 540 | 570 | 600 |
| TTL – top tube length (c-c / actual) | 545 | 520 | 540 | 570 | 600 |
| Stack | 552 | 552 | 572 | 601.5 | 630 |
| Reach | 380 | 355 | 369 | 390.5 | 411.5 |
| SO – standover height | N/A | 767 | 786.5 | 815.5 | 844 |
| BBH – bottom bracket height | 288 | 288 | 288 | 288 | 288 |
| BBD – bottom bracket drop | 81 | 81 | 81 | 81 | 81 |
| STA – seat tube angle | 73.3 | 73 | 73.5 | 73.5 | 73.5 |
| HTA1 – head tube angle rear | 73.5 | 73.5 | 73.5 | 73.5 | 73.5 |
| WB – wheelbase | 1030,8 | 1006.5 | 1026.5 | 1057 | 1086 |
| A-C – axle to crown | 298,5 | 298 | 298 | 298 | 298 |
| R – rake | 25 | 25 | 25 | 25 | 25 |
| T – trail | 50,5 | 50,5 | 50,5 | 50,5 | 50,5 |
| CSL – chainstay length | 462 | 462 | 462 | 462 | 462 |
| FL – full bike length | 1660 | 1636 | 1656 | 1686.5 | 1715.5 |
| Frame |
| Fork |
| Headset |
| Seat clamp |
| Rack |
| Thru axles front |
| Choice of QR dropouts or 12mm Thru Axle dropouts and axle |
Does NOT include spacers for headset or kickstand
BUILD NOTES

Brake Standards
Mini frame kits come standard as IS(post mount) – We offer multiple inserts, make sure the ones you choose are compatible with the wheel and drivetrain you are installing – All of the inserts come with IS brake mount.
Headset & Fork Compatibility
Frame kits requires a standard 1 1/8 headset for straight steerers, make sure to check the spec sheet for the correct sizing of the headset – All Mini’s comes with a headset installed.
Drivetrain
Any 1×11 speed and newer flatbar drivetrain from Shimano or Sram will provide compatibility and great shifting.
Bottom brakcet shell is a 68mm BSA, make sure you get a crankset that is compatible.
Tyre Clearence
The Mini has a max tyre clearence of 60mm without mudguards.


