Frame material - Cˣ - Cross Carbon | Wheelset material - Carbon | Groupset - Shimano Ultegra Di2 | Frame fit - Road Race | Tyre clearance - 35mm | Real World Weight - 8.07kg
IKUISTA Fit Recommendation
Bike:—
· —
Important: This tool provides a guideline recommendation based on the measurements you enter.
We cannot guarantee the recommendation is perfect — flexibility, riding style, saddle setup, and personal preference matter. Your final configuration and component choices (size, stem, bar, cranks, spacers) are always your responsibility.
How to measure:
Stand barefoot against a wall. Look forward. Measure to the top of your head.
How to measure:
Barefoot. Place a book firmly into your crotch (like a saddle) and measure from floor to the top edge. Most people are 65–95 cm — if yours is far from this, check you measured in cm, not inches.
How to measure:
Measure bone-to-bone across shoulders (acromion to acromion), not shirt seam to seam. Bar width is measured center-to-center (c-c).
Riding positioni
What this affects:
This slider affects frame size, stem and spacers. In a size-overlap zone a more comfortable position picks a bigger frame + shorter stem (higher front end); a more aggressive position picks a smaller frame + longer stem (lower front end).
Endurance
ComfortEnduranceRace
i
What this affects:
With clip-on aero bars your forearms rest on pads and your grip moves forward. We then recommend a shorter stem and, between two sizes, the bigger frame — a higher, more stable front end is easier to hold in the aero position. In aero use the saddle often moves slightly forward and up.
Extra measurement (optional)
How to measure:
Measure suprasternal notch (base of throat) → crotch (same point as inseam). Tape runs along the front of your body. This refines frame size and cockpit/stem. Most people are 45–65 cm — if yours is far from this, check you measured in cm, not inches.
How to test:
Stand with straight legs and reach toward your toes. Can't get near = stiff. Reach your toes = average. Palms flat on the floor = supple. This tells us how low a riding position you can hold comfortably.
Your recommendation
Recommended size:—
This is the bike frame size. Choose this when you order.
Saddle height:—
Set your saddle to this height. Measure from the top of the saddle down to the pedal, with the pedal at its lowest point. Fine-tune to comfort.
Handlebar width:—
Order a handlebar of this width.
Stem:—
The short part that connects the handlebar to the frame. Order this length.
Spacers:—
Small rings under the stem that set the handlebar height. Start with this amount.
Configurator link missing: add configurator_url to the bike_model entry.
Tip: take a screenshot before going to the configurator.
Expected availability–
Missing components
Pay in parts – up to 36 months at 0% interest with Zaver financing.
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With 36-month term–/mo
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Estimated total cost–
Product price–
Setup fee–
Monthly fee–/mo
Interest estimate–
This calculation is an estimate. Currency conversion is indicative. Final monthly payment and terms are shown at checkout before confirmation.
Read financing terms.
Bike Leasing Options
Choose your preferred shipping partner at checkout. IKUISTA offers flexible delivery options through Vapaus and GoByBike, both trusted carriers. Select the option that works best for your location and timeline. Each carrier provides reliable tracking and professional handling of your bike or components, ensuring your order arrives in perfect condition.
30-day Fit Guarantee
If your bike doesn’t feel right within 30 days of delivery, we’ll help you dial it in. How the Fit Guarantee works
Lifetime Crash Replacement
Ride with confidence. If your frame is damaged, we’ll replace it up to 30% of the frame price. How it works
Optional Extended Warranty
Purchase Here - Add resale value and peace of mind. The frame warranty transfers to the next owner. How it works
Trade-in & Ikuista Renewed
Trade your Ikuista back toward a new one, at a value we set by inspection. We take back any Ikuista, whatever its age. How it works
Assembled & Checked in Finland
Every bike is assembled to order in and individually quality-checked before leaving our facility. Estimated dispatch time is approximately 2 weeks from the date of purchase.
We take the whole bike back for recycling
Hand over the whole bike at the end of its life. No dismantling, no sorting. Our partner Kuusakoski recycles it all, metal and carbon alike, back into raw material. Read more
Wheelset: Valois MNTE 60 Carbon Wheelset, 700C, 60 mm Rim Depth, 23 mm Internal Width, 30 mm External Width, Ratchet Hub System (36T Engagement), CenterLock Disc, Pillar Aero 1423 Straight Pull Spokes, Approx. 1640 g Wheelset Weight, Max System Weight 130 kg
Tires: Continental Grand Prix 5000 S TR Folding, 700×30C (30-622)
Tubeless Ready: Yes (Rim Tape Installed)
Tubeless Valves: IKUISTA 80 mm (Included, Not Installed)
Inner Tubes: Vittoria 28–42C Presta 48 mm (Installed)
Valve Extenders: Vittoria 30 mm
DRIVETRAIN
Groupset: Shimano Ultegra Di2 Electronic
Configuration: 2×12-Speed
Shifters: Shimano Ultegra Di2 ST-R8170
Front Derailleur: Shimano Ultegra Di2 FD-R8150
Rear Derailleur: Shimano Ultegra Di2 RD-R8150
Crankset: Shimano Ultegra FC-R8100
Chainrings: 52–36T
Cassette: Shimano Ultegra CS-R8101
Chain: Shimano CN-M8100
Bottom Bracket: Token T47 with TBT Bearings
Max Chainring Size: 52T
BRAKES
Brake System: Shimano Ultegra Hydraulic Disc
Brake Calipers: Shimano BR-R8170
Rotors: Shimano SM-RT64 CenterLock, 160 mm Front / 160 mm Rear
COCKPIT
Cockpit: Valois Cˣ HBRD Integrated Carbon Cockpit, 380–420 mm
Saddle: IKUISTA Vael 145 mm
Handlebar Tape: IKUISTA Performance Tape, 2.5 mm
Headset: Integrated
ELECTRONICS
Battery: Shimano BT-DN300 Internal Battery
Charger: Shimano EW-EC300
ACCESSORIES
Bike Bell
Reflector Set
IKUISTA Bicycle Bag
Product Manual
WEIGHT
Claimed Weight: Approx. 8.07kg (Size M, Inner Tubes Installed, No Pedals)
WEIGHT LIMIT
Maximum System Weight: 120 kg (Bike + Rider + Cargo)
PRODUCT DISCLAIMER
Specifications, geometry, colors, graphics, components, weights, and pricing may change without prior notice.
Product images may show optional equipment, prototype components, or specifications not included in the final production model.
Equivalent or higher-specification components may be substituted due to continuous product development or component availability.
Claimed weights are based on pre-production samples and manufacturer measurements. Actual production weights may vary by frame size, paint finish, component tolerances, and production batch.
Tire clearance values are based on measured tire dimensions and may vary between manufacturers and wheel combinations.
Bicycle weights are stated without pedals unless otherwise specified.
Maximum system weight includes the bicycle, rider, clothing, accessories, luggage, and cargo.
MSRP pricing may vary by country, taxes, shipping costs, import duties, and dealer-installed options.
Geometry chart
Bike Geometry & Sizes
Measurement
XS
S
M
L
XL
A — Seat tube length
440 mm
470 mm
500 mm
520 mm
540 mm
B — Seat tube angle
74.5°
74.5°
74°
73.6°
73.3°
C — Head tube length
102 mm
108 mm
121 mm
141 mm
161 mm
D — Head tube angle
70.5°
71°
72°
72.5°
73°
E — Top tube length
515 mm
530 mm
540 mm
550 mm
565 mm
G — B.B. drop
70 mm
70 mm
70 mm
70 mm
70 mm
H — Chainstay length
412 mm
412 mm
412 mm
412 mm
412 mm
I — Fork offset
45 mm
45 mm
45 mm
45 mm
45 mm
J — Wheelbase
982 mm
993 mm
991 mm
992 mm
999 mm
K — Reach
375 mm
388 mm
389 mm
389 mm
394 mm
L — Stack
504 mm
511 mm
527 mm
548 mm
568 mm
Inseam
71–76 cm
74–80 cm
79–85 cm
83–90 cm
87–94 cm
Rider height
160–168 cm
168–176 cm
174–182 cm
180–188 cm
188–198 cm
Components geometry
Component Geometry
Measurement
XS
S
M
L
XL
Spacers (mm)
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–
–
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Stem length (mm)
–
–
–
–
–
Handlebar width (mm)
–
–
–
–
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Crank length (mm)
–
–
–
–
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Front chainring
–
–
–
–
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Saddle post minimum insertion (mm)
–
–
–
–
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Saddle post maximum extension (mm)
–
–
–
–
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Product manuals
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I have to say, compared to my own old beater bike, this is a completely different ride.
— AamulehtiTomi Pyy, journalist, Aamulehti, First ride impression, July 2026
Fluxi – All-Round Aero Performance
Fluxi sits between pure aero and all-road versatility. It combines aerodynamic tube shaping with balanced geometry, delivering speed and efficiency without the extremes of a dedicated aero race bike. The result is a fast, confident platform for everyday performance riding.
Designed to excel in varied conditions, Fluxi maintains sharp handling and stiffness while allowing wider tires and a more adaptable setup. It’s the choice for riders who want aerodynamic gains, real-world comfort, and one bike that works everywhere.
Fluxi C∞ Shimano Ultegra Di2 is a premium aero road bike for riders who want higher efficiency, lower weight, and a more refined ride feel without moving away from practical real-world performance. It suits fast endurance riding, racing, and ambitious training.
The Fluxi C∞ carbon platform is paired with an integrated cockpit and deep-section Valois MNTE 60 carbon wheels for a cleaner, faster, and more advanced front end. Shimano Ultegra Di2 delivers crisp electronic shifting and proven race-level performance, while the full build is designed around speed, stiffness, and control.
Built with a Fluxi C∞ carbon frameset, Shimano Ultegra Di2 2x12 drivetrain, Valois MNTE 60 carbon wheelset, Continental Grand Prix 5000 S TR 30 mm tires, and Valois C∞ HBRD integrated cockpit. A lightweight high-performance setup aimed at riders who want a sharper and more competitive package.
