MY24 Roubion
MY24 Roubion
MY23 Roubion
MY23 Roubion
Juliana Bicycles Roubion MX Full Suspension Mountain Bike
Juliana Bicycles Roubion MX Full Suspension Mountain Bike

Ready To Rally The World

Whether blind racing or just blindly enjoying the trails as they come, the Roubion’s MX wheel combo feels like the best mix since Aperol met spritz. A 29-inch front wheel serves up high-speed stability and high rolling confidence. Meanwhile the 27.5-inch rear wheel makes for an intuitive and highly maneuverable rear end that loves to get sideways around the most ragged of switchbacks. We’re pretty sure there’s no better bike to tackle alpine terrain.

Key Features:

Available in: Carbon CC
Wheel Size: MX
Front Travel: 160mm
Rear Travel: 150mm
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MY 24 ROUBION CC X 0 AXS MATTE JADE GREEN
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MY 24 ROUBION CC X 0 AXS MATTE JADE GREEN

Contact your local dealer for pricing

Weight: 31.43 lbs / 14.26 kg
 
Please note: Price, Weight, and Parts Spec information is subject to change.

X0 AXS

   

31.43 lbs / 14.26 kg

X0 AXS RSV

   

31.35 lbs / 14.22 kg

Frame

   

6.96 lbs / 3.16 kg

Material
Carbon CC

CC denotes our highest grade carbon fiber frames. Use of the very best materials in the composite results in the lightest, best handling bikes. CC level bikes are also specced with the best wheels, drivetrains and suspension on these models.

Learn More

Material
Carbon CC

CC denotes our highest grade carbon fiber frames. Use of the very best materials in the composite results in the lightest, best handling bikes. CC level bikes are also specced with the best wheels, drivetrains and suspension on these models.

Learn More

Material
Carbon CC

CC denotes our highest grade carbon fiber frames. Use of the very best materials in the composite results in the lightest, best handling bikes. CC level bikes are also specced with the best wheels, drivetrains and suspension on these models.

Learn More

Travel
150mm

Travel
150mm

Travel
150mm

Wheel Size
MX

Wheel Size
MX

Wheel Size
MX

Rear Shock
RockShox Super Deluxe Ultimate, 230x60

Rear Shock
RockShox Super Deluxe Ultimate, 230x60

Rear Shock
-

Fork
RockShox Lyrik Ultimate, 160mm

Fork
RockShox Lyrik Ultimate, 160mm

Fork
-

Rear Derailleur
SRAM X0 Eagle AXS T-Type, 12spd

Rear Derailleur
SRAM X0 Eagle AXS T-Type, 12spd

Rear Derailleur
-

Right Shifter
SRAM AXS Pod Bridge

Right Shifter
SRAM AXS Pod Bridge

Right Shifter
-

Cassette
SRAM X0 Eagle T-Type, 10-52t

Cassette
SRAM X0 Eagle T-Type, 10-52t

Cassette
-

Chain
SRAM X0 Eagle T-Type, Flattop, 12spd

Chain
SRAM X0 Eagle T-Type, Flattop, 12spd

Chain
-

Bottom Bracket
SRAM DUB 73mm MTB Wide BB

Bottom Bracket
SRAM DUB 73mm MTB Wide BB

Bottom Bracket
-

Headset
Cane Creek 40 IS Integrated Headset

Headset
Cane Creek 40 IS Integrated Headset

Headset
-

Rear Tire
Maxxis Minion DHR II 27.5"x2.4", 3C MaxxTerra, EXO

Rear Tire
Maxxis Minion DHR II 27.5"x2.4", 3C MaxxTerra, EXO

Rear Tire
-

Front Tire
Maxxis Minion DHF 29"x2.5"WT, 3C MaxxGrip, EXO

Front Tire
Maxxis Minion DHF 29"x2.5"WT, 3C MaxxGrip, EXO

Front Tire
-

Front Hub
Industry Nine 1/1, 15x110, Torque Cap, 6-Bolt, 28h

Front Hub
Industry Nine 1/1, 15x110, Torque Cap, 6-Bolt, 28h

Front Hub
-

Front Rim
RaceFace ARC Offset 30 29"

Front Rim
Reserve 30|HD 29"

The Reserve 30|HD is specially designed for aggressive trail riding. They feature a 30mm width for use with 2.5 tires and a redesigned inner rim bed that takes the hassle out of seating new tires. The Reserve 30|HD is the ultimate mountain bike rim.

Learn More

Front Rim
-

Rear Hub
Industry Nine 1/1, 12x148, XD, 6-Bolt, 28h

Rear Hub
Industry Nine 1/1, 12x148, XD, 6-Bolt, 28h

Rear Hub
-

Rear Rim
RaceFace ARC Offset 30 27.5"

Rear Rim
Reserve 30|HD 27.5"

The Reserve 30|HD is specially designed for aggressive trail riding. They feature a 30mm width for use with 2.5 tires and a redesigned inner rim bed that takes the hassle out of seating new tires. The Reserve 30|HD is the ultimate mountain bike rim.

Learn More

Rear Rim
-

Front Rotor
SRAM HS2 200mm

Front Rotor
SRAM HS2 200mm

Front Rotor
-

Rear Rotor
SRAM HS2 180mm

Rear Rotor
SRAM HS2 180mm

Rear Rotor
-

Brakes
SRAM Code Silver Stealth

Brakes
SRAM Code Silver Stealth

Brakes
-

Crankset
SRAM X0 Eagle DUB T-Type Crankset, 32t

Crankset
SRAM X0 Eagle DUB T-Type Crankset, 32t

Crankset
-

Handlebars
Santa Cruz 35 Carbon Bar, 800mm

Handlebars
Santa Cruz 35 Carbon Bar, 800mm

Handlebars
-

Stem
Burgtec Enduro MK3, 42mm

Stem
Burgtec Enduro MK3, 42mm

Stem
-

Saddle
Juliana Carbon Saddle

Saddle
Juliana Carbon Saddle

Saddle
-

Seatpost
OneUp V2 Dropper Post, 31.6

Seatpost
OneUp V2 Dropper Post, 31.6

Seatpost
-

Grips
Juliana House Grips

Grips
Juliana House Grips

Grips
-

Battery Charger
SRAM eTap Powerpack 1 Battery

Battery Charger
SRAM eTap Powerpack 1 Battery

Battery Charger
-

Roubion Frame Specifications

Suspension SystemVPP
Front DerailleurNo compatibility
Headset/HeadtubeIntegrated (IS41/52)
Seat Post31.6mm
Seat Clamp36.4mm
Eye to Eye length230mm
Stroke60mm
Fork Compatibility160mm
BB Shell73mm Threaded
Max Tire Size2.6"
Max Chainring Size36t
Water Bottle Mounts1
Shock Mounting Bushing Front30x8 (standard bushing)
Shock Mounting Bushing Rear30x8 (roller bearing)
Brake Mount180 PM
Fork Offset37mm (XS) | 44mm (S-M)

Suspension Setup

Take a look at detailed sag, high/low rebound, and high/low compression recommendations for shocks and forks in each build.

X0 AXS

FORK: Rockshox Lyrik Ultimate

Rider WeightAir PressureRebound (from closed)Compression: LSC,HSC (from middle)
100lbs (45.5kg)4015-2,middle
120lbs (54.4kg)5013-2,middle
140lbs (63.5kg)6012-2,middle
160lbs (72.6kg)7011-2,middle
180lbs (81.8kg)8010-2,middle
200lbs (90.7kg)909-2,middle
220lbs (99.8kg)1008-2,middle
240lbs (108.8kg)1106-2,middle
260lbs (113kg)1205-2,middle

SHOCK: Rockshox Super Deluxe Ultimate

Rider WeightAir PressureShock SagRebound (from closed)Compression (from closed)
100lbs (45.5kg)8528-32%, 16.5-19mm710
120lbs (54.4kg)10528-32%, 16.5-19mm610
140lbs (63.5kg)13028-32%, 16.5-19mm610
160lbs (72.6kg)15028-32%, 16.5-19mm69
180lbs (81.8kg)17528-32%, 16.5-19mm59
200lbs (90.7kg)19528-32%, 16.5-19mm59
220lbs (99.8kg)22028-32%, 16.5-19mm58
240lbs (108.8kg)24028-32%, 16.5-19mm48
260lbs (117.9kg)26528-32%, 16.5-19mm48

X0 AXS RSV

FORK: Rockshox Lyrik Ultimate

Rider WeightAir PressureRebound (from closed)Compression: LSC,HSC (from middle)
100lbs (45.5kg)4015-2,middle
120lbs (54.4kg)5013-2,middle
140lbs (63.5kg)6012-2,middle
160lbs (72.6kg)7011-2,middle
180lbs (81.8kg)8010-2,middle
200lbs (90.7kg)909-2,middle
220lbs (99.8kg)1008-2,middle
240lbs (108.8kg)1106-2,middle
260lbs (113kg)1205-2,middle

SHOCK: Rockshox Super Deluxe Ultimate

Rider WeightAir PressureShock SagRebound (from closed)Compression (from closed)
100lbs (45.5kg)8528-32%, 16.5-19mm710
120lbs (54.4kg)10528-32%, 16.5-19mm610
140lbs (63.5kg)13028-32%, 16.5-19mm610
160lbs (72.6kg)15028-32%, 16.5-19mm69
180lbs (81.8kg)17528-32%, 16.5-19mm59
200lbs (90.7kg)19528-32%, 16.5-19mm59
220lbs (99.8kg)22028-32%, 16.5-19mm58
240lbs (108.8kg)24028-32%, 16.5-19mm48
260lbs (117.9kg)26528-32%, 16.5-19mm48

Geometry

All units are in millimeters or degrees.

XSSM
Reach | hi/lo405/402430/427455/452
Stack | hi/lo594/595617/619626/628
Head Tube Angle | hi/lo64.7°/64.5°64.7°/64.5°64.7°/64.5°
Seat Tube Length | hi/lo370/370380/380405/405
Front Center | hi/lo722/722757/757786/786
BB Height | hi/lo344/341344/341344/341
Wheelbase | hi/lo1149/11541188/11891221/1222
Rear Center | hi/lo427/432431/432435/436
Head Tube Length | hi/lo110/110100/100110/110
Top Tube Length | hi/lo536/542570/575599/604
Seat Tube Angle | hi/lo77.6°/76.9°77.2°/76.7°77.1°/76.6°
Standover Height | hi/lo701/698709/706731/727
Bronson 4 Frame Render

Units

cm

Frame Sizing

If you're on the cusp between the recommended height range of two sizes, the absolute best thing is to try to ride them both. At a minimum, check the stack/reach measurements on your current bike and compare it to the new model you are looking at to get an idea of a fit you are already comfortable with. If riding the bike is not an option, consider the following.

The Roubion is available in sizes extra small - medium (XS-M). The small and medium are mixed wheel configurations. The extra small uses 27.5” wheels - both front and rear.

Personal Preference

A larger size frame will be more stable, and will give you more room to move without upsetting the weight-balance of the bike. The larger size will put the front wheel further in front of you, which gives the feeling of security and conversely, it will require more significant body movements when you WANT to shift the weight-bias of the bike. Think hard about your riding style and how active/intuitive you want it to be vs stable and speedy. You'll need to work a bit harder to muscle the larger bike around.

Body Dimension

Not all bodies at a given height are the same. If you have longer legs and a shorter torso than the average person your height, that may push you towards the smaller of the recommended sizes. If you're all torso and arms, most likely you'll want to size up.

Units

cm

142 - 155cm
142 - 155cm

XS

155 - 165cm
155 - 165cm

S

165 - 175cm
165 - 175cm

M

FAQ's

Can I put a 27.5 front wheel on the Roubion?

These bikes are designed specifically to use mixed wheels. We do not recommend a 27.5 front wheel for geometry reasons. The XS size is the exception as it's designed for 27.5".

Do all sizes use MX wheels?

The XS size Roubion uses 27.5" wheels front and rear. All other sizes are MX

I see there are different chainstay lengths for each size bike. Can I buy a different swingarm to customize the length on my bike?

The chainstay length change occurs in the front triangles- we vary the pivot locations fore and aft to achieve the different lengths while using a single size swingarm. So no- you cannot get the chainstay length of the small on your size large, for instance.

I'm coming from a 27.5 bike- what will feel different with MX? Any setup tips?

An MX bike will definitely handle differently than a full 27.5 bike. The main difference you'll feel is a more stable and confident front end. The turning will be a bit slower than a 27.5, but the payoff is a more secure feeling in corners and more traction. Due to the taller front axle height and improved roll-over of the large wheel, your chances of stuffing the front wheel or going over the bars is vastly diminished. Use this security to ride challenging terrain with a more aggressive and dynamic body position.

I've been riding 29ers for a while- what will feel different with MX? Any setup tips?

29" bikes provide a ton of front wheel grip- this is partially due to the front wheel itself, but also due to the axle height of the rear wheel which works to keep the front end weighted. This creates a natural position on lower-angle terrain but requires body position and/or setup adjustments to achieve any sort of rearward bias.

On an MX bike, the bias is more rearward. This gives a very natural feeling on steep descents, but requires some body position and setup consideration for a balanced feel on flatter terrain. Compared to a 29er, a slightly lower handlebar and a more forward-biased suspension setup will make an MX bike feel more like what you're used to. Additionally, using the Hi BB setting will lend itself to a more front biased feel. Using these tuning parameters will help you find the sweet spot for your terrain and preference.

You'll know you have it dialed when it feels like you're never making large body weight shifts to either lift the front end or keep it stuck to the ground.

What fork offset is the recommended?

The Roubion comes with 42-44mm offset forks, and this is what we recommend for optimal handling. The size XS come with a 37mm offset 27.5" fork

What's the largest rear rotor that will fit on the Roubion?

The minimum is 180mm (direct mount) and the largest is 223mm

Why are there two different measurements listed for BB Drop?

BB drop is the measurement between the center of the bottom bracket and the front and rear axles. Because the Roubion (S-M) comes with two different wheel sizes the BB drop is greater up front.

Why MX (Mixed Wheels)?

Mixed wheels provide the stability and traction of a 29" front wheel with the agility of a 27.5" rear wheel. The smaller rear wheel and its comparatively lower axle height allows the rider to more easily unweight the front wheel- this makes for confident yet agile handling on the steepest of descents.

What can I store in the glovebox?

The glovebox comes with two bags - a tube purse and a tool wallet. You should be able to fit a superlight tube, a small pump, tire lever, and misc odds and ends in these two bags.

Exploded Diagrams

Seat Collar, Upper Link Mounting Hardware, and Upper Shock Bolt

Bronson/Roubion 4.1 Exploded Diagram 1
Bronson/Roubion 4.1 Exploded Diagram 1

Lower Link Mounting Hardware

Bronson/Roubion 4.1 Exploded Diagram 2
Bronson/Roubion 4.1 Exploded Diagram 2

Downtube Protector and Shuttle Guard

Bronson/Roubion 4.1 Exploded Diagram 3
Bronson/Roubion 4.1 Exploded Diagram 3

Rear Axle, Derailleur Hanger, and Chainstay Protector

Bronson/Roubion 4.1 Exploded Diagram 4
Bronson/Roubion 4.1 Exploded Diagram 4

Rear Fender

Bronson/Roubion 4.1 Exploded Diagram 5
Bronson/Roubion 4.1 Exploded Diagram 5

Upper Link

Bronson/Roubion 4.1 Exploded Diagram Upper Link
Bronson/Roubion 4.1 Exploded Diagram Upper Link

Lower Link

Bronson/Roubion 4.1 Exploded Diagram Lower Link
Bronson/Roubion 4.1 Exploded Diagram Lower Link