The Juliana Roubion 4 CC X0 AXS Reserve evo Exclusive Complete Mountain Bike is poetry in bike form, if poetry were a bit gnarlier. Slam poetry maybe? With rocks and roots and high speed hoots. Juliana spared no expense with this bike, festooning their best CC carbon frame with the absolute tops in components: everything is big, light, and utterly bombproof. This build features hard-stopping SRAM Code Silver Stealth brakes and the incredible SRAM X0 Eagle AXS Transmission drivetrain, a revolutionary design which ditches your trusty derailleur hanger to mount directly to the frame. The carbon Reserve wheels share the frame’s lifetime guarantee, too. From DH shuttle runs to all-day epics in the backcountry, this Roubion is raring to go. There is no more capable bike!
Carbon CC Frame
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CC denotes Juliana's highest grade carbon fiber frames. Use of the very best materials in the composite results in the lightest, best handling bikes.
Travel
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160mm Front / 150mm Rear
Wheel Size
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Sizes S-M: Mixed Wheel (29" Front / 27.5" Rear), Size XS: 27.5"
Lower-Link Mounted VPP® Suspension
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VPP is based on the patented principle of having two short links rotating in opposite directions. This system provides huge design flexibility, allowing Juliana to manipulate shock rates to the intended purpose and character of each model; from short travel endurance bikes to World Championship winning DH machines. This redesign mounts the shock lower on the bike, making for an even better ride quality.
Proportional Chainstay Lengths
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With rear ends that match the size range, this bike's geo and ride quality is the same for all riders.
Integrated Flip Chip for High/Low Geometry Adjustment
Specs
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Biking Type:
MountainMore
Biking Type
Mountain
Mountain bikes are built for tackling rough terrain with frames made of durable materials like aluminum or carbon fiber, ensuring stability and maneuverability. They feature suspension to absorb impacts from rocks, roots, and drops, providing a smoother ride. -
Used For:
TrailMore
Used For
Trail
Trail bikes are the quintessential “mountain bikes.” If you’re heading into the woods expecting to do it all on two wheels – climbing, technical sections, AND fun descents – you’re looking for a trail bike.
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Suspension:
Full SuspensionMore
Suspension
Full Suspension
Engineered to tackle the most challenging terrain with enhanced comfort and control. Unlike hardtail bikes, full suspension bikes feature both front and rear suspension systems that allow the wheels to move independently from the frame.
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Frame Material:
CarbonMore
Frame Material
Carbon
Carbon is a composite frame material. Unlike metals, carbon is composed of fibrous strands woven into a grid and bonded with epoxy. Carbon is favored by many for its lightness and stiffness but its complexity in fabrication makes it the most expensive option.
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Gearing:
1 x 12 -
Water Bottle Mounts:
1 -
Fork:
RockShox Lyrik SelectMore
Fork
RockShox Lyrik Select
For all the ups, downs and to get you to everything in between. Lyrik Select combines an updated DebonAir air spring with the trusted Charger RC damper for unmatched trail control and precision. Maxima Plush fluid reduces friction, silences noise, and provides all-around lasting performance. -
Stanchion Diameter (mm):
35 -
Fork Travel (mm):
160 -
Rear Shock:
Rockshox Super Deluxe UltimateMore
Rear Shock
Rockshox Super Deluxe Ultimate
In it to win it? Super Deluxe Ultimate is the smart bet for the podium. Packed to the hilt with fine-tuning adjustments that meaningfully improve suspension performance, it’s the most advanced shock RocShox have ever made. Pioneering one of the most impactful innovations in damper history, the new RC2T damper allows for 100% independent High Speed and Low Speed Compression adjustments, rounding out an arsenal of elite technology.
Shock Adjustments – Separate and Independent Open and Threshold Pistons / Low Speed Compression Adjustment / Rebound Adjustment / Air Spring Pressure
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Rear Travel (mm):
150 -
Shifters:
SRAM AXS Pod BridgeMore
Shifters
SRAM AXS Pod Bridge
The AXS Pod transforms the crucial act of rider inputs into a vastly more personal experience for all of your AXS controls. -
Rear Derailleur:
SRAM X0 Eagle AXS T-Type, 12-SpeedMore
Rear Derailleur
SRAM X0 Eagle AXS T-Type, 12-Speed
Engineered as integrated and interdependent transmission components, the X0 EagleT-Type derailleur mounts around the wheel axle itself, contacting the cassette directly with a first-of-its-kind Hangerless Interface. Beyond that, its Full Mount attachment method creates a far stronger connection that grips both sides of the frame. The new Transmission derailleurs feature the same intuitive pairing and set-up procedure as our Eagle AXS derailleurs. Featuring an overload clutch that boosts resiliency and a tucked-in profile that houses protection covers on the B-knuckle and outer link that are fully replaceable, or upgradeable to the XX skid plate. -
Crankset:
SRAM X0 Eagle AXS T-Type, 32tMore
Crankset
SRAM X0 Eagle AXS T-Type, 32t
X0 Eagle AXS Transmission Power Meter Crankset provides riders with accurate, live power data delivery housed in our most advanced aluminum crankset. The power meter technology is integrated through what we call “DUB-PWR” – a unique design that elegantly houses Quarq’s reliable and accurate power measurement inside the DUB crank spindle itself. Measuring left-side power to calculate total watts, it’s subtle, lightweight, compatible with any chainring setup, and boasts unbeatable battery life. It is also compatible with the Flight Attendant system, allowing for total connectivity between all AXS enabled components. No-compromise, no-fuss data delivery with robustness in mind.FEATURES
- Innovative DUB-PWR design allows for lightweight, subtle Quarq power integration.
- Compatible with Flight Attendant
- Unique, groundbreaking design integrated with the lightest aluminum crankset on the market.
- +/- 3% accuracy
- Long battery life (400+hours)
- User replaceable AAA lithium battery
- Waterproof (IPX7 waterproof to 1 meter for 30 minutes)
- 30-34T rings
- Can be run with chainring bash guards
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Cassette:
SRAM X0 Eagle T-Type XS-1295, 10-52tMore
Cassette
SRAM X0 Eagle T-Type XS-1295, 10-52t
The X0 Eagle Transmission (T-Type) Cassette is a major reason why Eagle Transmission offers the best-ever inboard and outboard shifting performance under load. Engineered as integrated and interdependent transmission components, the X0 Eagle Transmission Cassette and derailleur contact directly, ensuring perfect alignment on every bike. Beyond its unique and stunning Dark Polar finish and electroless nickel plating for incredible resistance to corrosion and wear, its full X-Sync design literally means the harder you pedal, the better it shifts. Its strength is further proven by its full approval for E-MTB use. It’s been built for a 55mm chainline for even more durability and precision thanks to milder chain angles throughout the full range, low to high. From its massive 520% gear range, the 52 tooth cog steps down with improved gear progression with 44 and 38 tooth cogs in the low end (compared to the Eagle drivetrain 10-52-tooth cassette). What else? It has a clearly marked Setup Cog, making install both simple and fool-proof.FEATURES
- Full X-SYNC for best-ever inboard and outboard shifting performance under load
- Optimized gear steps on low end
- 55mm chainline compatibility for more moderate chain angle, longer wear and greater precision
- Setup Cog for fool-proof set up
- Features X-DOME with a lighter aluminum 12th gear
- Fully E-MTB approved
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Chain:
SRAM X0 Eagle T-Type Flattop, 12-SpeedMore
Chain
SRAM X0 Eagle T-Type Flattop, 12-Speed
With Eagle Transmission being the first of its kind, fully integrated and interdependent system, the X0 Eagle Transmission (T-Type) Flattop Chain is so much more than just a chain. Its unique flat top design makes it the strongest change chain we have ever made. With equal importance, it upgrades the look of any super machine. These details matter. It features a Dark Polar finish specific to X0, has been plated with electroless nickel, and comes with a PVD coating for unbelievable resistance to corrosion and wear. Fully approved for E-MTB use with solid pins.FEATURES
- Strongest SRAM chain ever
- Specifically engineered for Eagle Transmission
- Flattop profile, unbelievable shifting performance, game-changing aesthetics
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Bottom Bracket:
SRAM DUB 73mm MTB Wide BB -
Brake Levers:
SRAM Code Silver StealthMore
Brake Levers
SRAM Code Silver Stealth
SRAM's legendary, full-powered brake now features a new technology to improve your cockpit aesthetic: Stealth. The all-new lever body design brings the hose closer to the bar, allowing for a sleeker, more modern ride. The proven internals remain the same, with SwingLink driving SRAM's signature feel. And for unrivaled ease of customization, Code Silver features tool-free Reach and Contact Point Adjust. Confidence is king, and Code reigns supreme on the slew of more-capable-than-ever-before trail bikes, as well as heavy-duty giants like enduro, gravity, and E-MTB. -
Brake Calipers:
SRAM Code Silver Stealth -
Rotors:
SRAM HS2 200 / 180mm -
Headset:
Cane Creek 50 IS Integrated -
Handlebar:
Santa Cruz Bar 760mm | 35mm Rise -
Bar Tape/Grips:
Juliana House Grips -
Stem:
Burgtec Enduro, 42mm -
Saddle:
WTB Silverado Medium Ti -
Seatpost:
OneUp V2 Dropper 31.6mmMore
Seatpost
OneUp V2 Dropper 31.6mm
The OneUp V2 Dropper has the most drop, shortest stack height and shortest total length of any other post on the market. No other dropper can get your saddle lower.Smooth, reliable and a great value. There’s more than one reason testers, reviewers, racers and riders consistently rate our Dropper Post “#1”, “5-Stars” and “10/10.” -
Hubs:
DT Swiss 350 -
Rims:
Reserve 30 HD | 29" Front / 27.5" Rear -
Front Tire:
Maxxis Minion DHF 2.5" | 3C MaxxGrip, EXOMore
Front Tire
Maxxis Minion DHF 2.5" | 3C MaxxGrip, EXO
With a tread design that deftly balances rolling speed with braking and cornering traction, it’s no wonder why the Minion DHF is one of the most imitated tires in mountain biking.- 3C MaxxGrip: The stickiest, slowest rebounding rubber Maxxis offers.
- EXO: A cut and abrasion-resistant material added to the sidewalls.
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Rear Tire:
Maxxis Minion DHR II 2.4" | 3C, EXOMore
Rear Tire
Maxxis Minion DHR II 2.4" | 3C, EXO
With side knobs borrowed from the legendary Minion DHF, but widened to provide more support, the DHR II corners like no other. The center tread features ramped leading edges to improve acceleration and sipes to create a smooth transition when leaning the bike. Paddle-like knobs on the center tread dig in under hard braking and help keep the bike under control.- EXO: A cut and abrasion-resistant material added to the sidewalls.
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Warranty:
Limited Lifetime (Frame and Bearings, Rims)
Size | XS | S | M |
Rider Height | 4’8″ – 5’1″ | 5’1″ – 5’5″ | 5”5″ – 5’9″ |
Reach (mm) | 402 | 427 | 452 |
Stack (mm) | 595 | 619 | 628 |
Effective Top Tube (mm) | 542 | 575 | 604 |
Seat Tube (mm) | 370 | 380 | 405 |
Head Tube Angle (°) | 64.5 | 64.5 | 64.5 |
Seat Tube Angle (°) | 76.9 | 76.7 | 76.6 |
Chainstay Length (mm) | 432 | 432 | 436 |
Bottom Bracket Height (mm) | 341 | 341 | 341 |
Bottom Bracket Drop (mm) | 13 | 13 | 13 |
Head Tube Length (mm) | 110 | 100 | 110 |
Wheelbase (mm) | 1154 | 1189 | 1222 |
Standover Height (mm) | 698 | 706 | 727 |
Wheel Size | 27.5″ (650b) | Mixed Wheel | Mixed Wheel |
Other Notes
Juliana products can only be shipped within the United States
Bike Spec and Price Subject to Change
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