Four Pro - 2018
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Overview
Why the Four Pro?
- Frame Handbuilt in Britain
- Short travel, fast and agile 27.5 trail bike with progressive geometry
- Longer toptube and wheelbase for high-speed stability
- Compact swingarm with 12x148mm Boost rear hub spacing for precise handling
- Tuned pivot position for optimal suspension performance with 184x44mm rear shock
- Suspension travel: 130mm front & 120mm rear
- 5 year frame warranty
- Fox Performance 34 Float 130mm 27.5 Fork
- Fox Float DPS Performance 184 x 44mm Rear Shock
- Race Face Aeffect Dropper 150mm Seat-Post
- Shimano XT/SLX 11spd Drivetrain
The optimum blend of price, specification and performance make the Four Pro the perfect choice for the fast trail rider. Perfect for upgrades.
With the Four we have gone all out to build the lightest, toughest short-travel trail bike we could conceive.
With shorter travel we get less frame stress, so we lightened the gauge of the 6061 aluminium frame material. Extra machine processes shaved weight from all the CNCed parts while maintaining their crucial strength. A new split-rear compact swingarm gives us a shorter chain stay and by tucking in a 44x184mm shock we moved the single-pivot point rearwards to make the suspension more active everywhere.
Sitting below the bigger hitting trail burners of the Five and Alpine 6, but vastly more capable that the XC lightweights. The Four is Orange to the core: simple, reliable and built to perform at the highest level, out and back.
It climbs like a Welsh mountain goat and descends like a demon leaving smiles as big as we’ve had on any Orange bike.
Boxes ticked, the Four was born.
Specs & Options
SIZES AND COLOURS
Frame and Fork
6061-T6 Monocoque UK Formed Custom Aluminium Tubing. Wheel Size: 27.5. Rear wheel travel: 120.
Drivetrain
Wheel and Tyres
Braking
Finishing Kit
Geometry & Tech Info

FOUR GEOMETRY
| Monocoque/6061-T6 Reynolds Custom Butted Aluminium tubing | |||||
| Frame Size | S | M | L | XL | |
| Seat Tube Length | 15″ | 17″ | 18″ | 20″ | |
| A. Head Angle | 67° | 67° | 67° | 67° | 67° |
| B. Seat Angle Actual | 72º | 72º | 72º | 72º | |
| B. Seat Angle Effective | 74º | 74º | 74º | 74º | |
| C. Top Tube | 572 | 579 | 598 | 618 | |
| D. Top Tube (effective) | 590 | 610 | 630 | 650 | |
| E. BB Height (from ground) | 330 | 330 | 330 | 330 | |
| BB height (from axles | -25 | -25 | -25 | -25 | |
| F. Chainstay | 424 | 424 | 424 | 424 | |
| G. Head Tube | 100 | 110 | 110 | 130 | |
| H. Wheel base | 1132 | 1153 | 1173 | 1196 | |
| T. Rear Travel | 120 | 120 | 120 | 120 | |
| J. Reach | 421 | 438 | 458 | 473 | |
| K. Stack | 588 | 598 | 598 | 616 | |
| Standover | 690 | 730 | 744 | 783 | |
| Unless otherwise indicated all measurements are in mm. Frame angles are measured static, without rider sag. Bottom bracket height from ground is with 710 mm Ø tyre. | |||||
technical Info
| fork travel | |||||||||
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| Single crown | Triple Clamp | ||||||||
| Shock Length | 184 mm x 44 mm | ||||||||
| Rear Hub | 148 mm x 12mm (Boost) | ||||||||
| Seatpost Ø | 30.9 mm | ||||||||
| Seatclamp Ø | 34.9 mm | ||||||||
| Front Derailleur | none | ||||||||
| BB Shell | 73 mm ISCG05 | ||||||||
| Tapered Headset | Upper: ZS49/28.6 Lower: EC49/40 |
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Ride Guide
| Yes | Downhill | 0 out of 5 stars |
| Yes | Freeride | 0 out of 5 stars |
| Yes | Enduro | 3.0 out of 5 stars |
| Yes | All-Mountain | 3.0 out of 5 stars |
| Yes | Trail | 5.0 out of 5 stars |
| Yes | Adventure | 3.0 out of 5 stars |
| Yes | Touring | 1.0 out of 5 stars |
| Yes | XC Racing | 0 out of 5 stars |
Bike Sizing Guidelines
Please note: This is for guidance only. You may be taller or shorter, it doesn't mean our bikes will not fit you. The best way to determine the correct bike size for you is to try one. We've added some more explanation on sizing theory here: What size frame do I need?
What they say ...
Simple on paper, superb on the trail
BikeRadar
The new Orange Four is light, fast and a bundle of fun.
MBR Magazine
The Four is about fun on the trail, a bit of effort on your part and plenty of confidence from modern geometry.
Wideopen Magazine
For trail riding this bike takes some beating!
Enduro MTB
The Four has a fantastic mid-stroke that holds you right in the sweet spot.
What Mountain Bike


