Frame - C° - Core Carbon | Wheelset - Carbon | Groupset - Shimano GRX 700 Di2 | Frame fit - Endurance | Tyre clearance - 45mm | Real Weight - 8.31 kg
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);
an 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 and more stable front end is easier to hold in the aero position.
The saddle often moves slightly forward and up in aero use.
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.
Show financing calculation
With 36-month term–/mo
12 mo24 mo36 mo
Estimated monthly payment–
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.
Choose your leasing option at checkout. IKUISTA works with Vapaus and GoByBike, so you can lease your bike through your employer and spread the cost over monthly payments. Select the provider that suits you and finish your order as usual.
If your bike doesn’t feel right within 30 days of delivery, we’ll help you dial it in. How the Fit Guarantee works
Ride with confidence. If your frame is damaged, we’ll replace it up to 20% of the frame price. How it works
Purchase Here - Add resale value and peace of mind. The frame warranty transfers to the next owner. How it works
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
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.
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
Rotors: Shimano SM-RT64 CenterLock, 160 mm Front / 160 mm Rear
COCKPIT
Handlebar: Valois Aˣ HBRD Alloy
Stem: Valois Aˣ Unis Integrated
Headset: Zero Stack Integrated
Saddle: Valois Vael, 145 mm
Handlebar Tape: IKUISTA Performance Tape, 2.5 mm
ELECTRONICS
Battery: Shimano BT-DN320
Charger: Shimano EC-DN100
ACCESSORIES
Bike Bell
Reflector Set
IKUISTA Bicycle Bag
Product Manual
WEIGHT
Complete-bike weight: 8.31 kg
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
S
M
L
XL
XXL
A — Seat tube length
470 mm
495 mm
520 mm
545 mm
570 mm
B — Seat tube angle
74°
73.5°
73.5°
73.5°
73.5°
C — Head tube length
110 mm
125 mm
145 mm
165 mm
185 mm
D — Head tube angle
70.5°
71°
71.5°
71.5°
71.5°
E — Top tube length
521 mm
539 mm
553 mm
568 mm
583 mm
G — B.B. drop
78 mm
78 mm
78 mm
78 mm
78 mm
H — Chainstay length
435 mm
435 mm
435 mm
435 mm
435 mm
I — Fork offset
50 mm
50 mm
50 mm
50 mm
50 mm
J — Wheelbase
1011 mm
1020 mm
1030 mm
1046 mm
1061 mm
K — Reach
365 mm
373 mm
381 mm
390 mm
399 mm
L — Stack
542 mm
558 mm
579 mm
598 mm
617 mm
Inseam
75–80 cm
78–85 cm
82–88 cm
86–92 cm
89–95 cm
Rider height
163–173 cm
170–180 cm
178–187 cm
185–195 cm
190–200 cm
Components geometry
Component Geometry
Measurement
S
M
L
XL
XXL
Spacers (mm)
30mm
30mm
30mm
30mm
30mm
Stem length (mm)
80mm
90mm
100mm
100mm
110mm
Handlebar width (mm)
400mm
420mm
420mm
440mm
440mm
Crank length (mm)
165mm
170mm
170mm
172.5mm
172.5mm
Front chainring
40T
40T
40T
40T
40T
Saddle height min (mm)
650mm
680mm
725mm
765mm
800mm
Saddle height max (mm)
705mm
755mm
790mm
830mm
865mm
Seatpost length (mm)
350mm
350mm
350mm
350mm
350mm
Product manuals
Note: Some ad blockers, privacy extensions, antivirus software, corporate networks, or browser security settings may prevent documents from opening. If a file does not load, try another browser or temporarily disable blocking extensions.
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
Spektri C° Shimano GRX 700 Di2 Carbon combines the relaxed riding position of the Spektri endurance platform with a gravel-focused electronic drivetrain. It is built for long road days, rough surfaces and light gravel.
The Shimano GRX 1×12 drivetrain pairs ST-RX715 controls and an RD-RX717 rear derailleur with an FC-RX610 crankset, 40T chainring and 10–51T cassette. Hydraulic disc brakes provide control across changing surfaces.
This Carbon version upgrades the standard GRX 700 Di2 build with Valois HBRD 45 carbon wheels with a MicroSpline freehub and a Valois Vael 145 mm saddle. Continental Terra Trail 45 mm tyres and the Valois Aˣ alloy cockpit retain the practical all-road specification.
Assembled by hand and inspected in Tampere, Finland. Complete-bike weight: 8.31 kg.
Spektri C° Shimano GRX 700 Di2 Carbon is an endurance and all-road bike for long rides on tarmac, rough roads and light gravel. Its relaxed geometry is paired with Shimano GRX electronic shifting, carbon wheels and an upgraded Valois Vael saddle.
Shimano GRX 700 Di2 brings electronic 1×12-speed shifting to the Spektri platform. A 40T chainring and 10–51T cassette provide the gearing, while Shimano GRX hydraulic disc brakes and Continental Terra Trail 45 mm tyres complete the mixed-terrain setup.
Built with a Spektri C° carbon frameset, Shimano GRX 700 Di2 1×12 drivetrain, Valois HBRD 45 carbon wheels with a MicroSpline freehub, Continental Terra Trail PureGrip ShieldWall 45 mm tyres, Valois Vael 145 mm saddle and Valois Aˣ alloy cockpit. Complete-bike weight: 8.31 kg. Assembled and inspected in Tampere, Finland.
