Lowest0.78:1
Highest4.00:1
Total range510%
Estimated speed At 90 RPM
Lowest gear
Highest gear
Rear tire: 700C×50.
Velopedia Bicycle Archive
2026 Kona Ouroboros CR
Original specifications: geometry for 6 published sizes.
Planning to sell? Draft your listing
At a glance
Archive #900000986- Model year
- 2026
- Category
- Gravel & Cyclocross
- Original MSRP
- $3,799.00
- Sizes
- 48, 50, 52, 54, 56, 58
- Colors
- Matte Carbon w/ Gloss Orchid Fade Decals
- Geometry
- 6 manufacturer sizes
- In this record
- 20 specifications · 8 archived images · original MSRP · geometry
Model history 1 other year
Browse other years
Compare side by side
Identification clues
2026 archived details
- Published colors
- Matte Carbon w/ Gloss Orchid Fade Decals
- Frame
- Carbon Fiber
Clues, not proof of model year. Colors vary and components may have been replaced.
Original buildCarbon Fiber
Frameset
| Frame Construction | Kona Carbon |
|---|---|
| Frame Material | Carbon Fiber |
| Fork | Fox AX32 GRIP damper/ 40mm travel / Tapered / 12x100mm |
Drivetrain
| Shifters | Shimano GRX 820 |
|---|---|
| Rear Derailleur | Shimano RDRX822 |
| Crankset | Shimano GRX 820 40t / Length 48-52 170mm / 52-54 172.5mm / 56-58 175mm |
| Bottom Bracket | Shimano PF86.5 |
| Cassette | Shimano Deore M6100 10-51t 12spd |
| Chain | Shimano Deore M6100 |
Brakes
| Brakes | Brake Calipers: Shimano GRX 820; Front Brake Rotor: Shimano RT56 180mm 6B; Rear Brake Rotor: Shimano RT56 180mm 6B; Brake Levers: Shimano GRX 820 |
|---|
Cockpit & Contact Points
| Headset | FSA Orbit No.57 ZS44/ZS56 |
|---|---|
| Handlebar | Kona Gravel Dropbar 31.8mm / Width 48 440mm / 50 460mm / 52-54 480mm / 56 500mm / 58 520mm |
| Stem | Kona 31.8mm / Rise 6º / Length 48-52 50mm / 54-58 60mm |
| Saddle | WTB Volt Medium |
| Seatpost | TranzX Dropper +RAD 31.6mm 125mm |
Wheels & Tires
| Hubs | (F) Formula 12x100mm / (R) Formula 12x142mm MS |
|---|---|
| Rims | WTB KOM Team i27 TCS 29" |
| Spokes | Stainless 2.0mm Black |
| Front Tire | WTB Resolute TCS Light 700x50mm |
| Rear Tire | WTB Resolute TCS Light 700x50mm |
No specifications match. Try a component name or clear your search.
Geometry
Frame measurements by size.
Frame diagram
Size
Measurement
Measurement
—
Select an available measurement to locate it on the frame.
All geometry measurements6 sizes · 15 measurements
| Measurement | 48 | 50 | 52 | 54 | 56 | 58 |
|---|---|---|---|---|---|---|
| Seat tube | 410 mm | 410 mm | 455 mm | 455 mm | 500 mm | 535 mm |
| Top tube | 532 mm | 547 mm | 559 mm | 578 mm | 595 mm | 616 mm |
| Head tube | 116 mm | 132 mm | 148 mm | 172 mm | 193 mm | 225 mm |
| Head-tube angle | 68.7° | 68.7° | 68.7° | 68.7° | 68.7° | 68.7° |
| Seat-tube angle | 74.2° | 73.7° | 73.2° | 72.7° | 72.2° | 71.7° |
| Chainstay / rear center | 445 mm | 445 mm | 445 mm | 445 mm | 445 mm | 445 mm |
| Wheelbase | 1060 mm | 1071 mm | 1082 mm | 1096 mm | 1108 mm | 1124 mm |
| Bottom-bracket drop | 69 mm | 69 mm | 69 mm | 66 mm | 66 mm | 66 mm |
| Bottom-bracket height | 296 mm | 296 mm | 296 mm | 299 mm | 299 mm | 299 mm |
| Reach | 372 mm | 377 mm | 382 mm | 386 mm | 391 mm | 396 mm |
| Stack | 566 mm | 581 mm | 598 mm | 616 mm | 636 mm | 666 mm |
| Standover height | 725 mm | 730 mm | 769 mm | 777 mm | 814 mm | 848 mm |
| Fork offset / rake | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm |
| Front center | 624 mm | 635 mm | 646 mm | 659 mm | 671 mm | 687 mm |
| Fork length / axle-to-crown | 435 mm | 435 mm | 435 mm | 435 mm | 435 mm | 435 mm |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Try your current gearingChanged tires or gears? Calculate your setup.
Your changes apply to this calculation. The archived build stays unchanged.
Gearing results
| Measure | Original | Your setup |
|---|---|---|
| Lowest ratio | — | — |
| Highest ratio | — | — |
| Total range | — | — |
| Lowest-gear speed | — | — |
| Highest-gear speed | — | — |
Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.
Parts & serviceability
Find replacement parts
Shimano Deore M6100
Retailer offers
Shimano Deore CN-M6100 Chain Silver, 12 Speed, 126 Links
Model match
Shimano CN-M6100 on eBaySponsored links
Shimano Deore M6100 10-51t 12spd
Retailer offers
Shimano Deore 12 CS-M6100 Cassette Silver, 10-51T
Model match
Shimano CS-M6100 on eBaySponsored links
WTB Resolute TCS Light 700x50mm
Retailer offers
WTB Resolute TCS Tubeless Tire Black, 700x50mm, Light/Fast Rolling, 120tpi, Dual DNA, SG2
700x50c, Light/Fast Rolling, 120tpi, Dual DNA, SG2
Model match
WTB Resolute Light on eBaySponsored links
More parts (6)Fewer parts
Shimano PF86.5
WTB Volt Medium
Shimano GRX 820
Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
TranzX Dropper +RAD 31.6mm 125mm
WTB KOM Team i27 TCS 29"
Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.
Service essentialsQuick reference before buying parts
Archived specifications for reference. Check the fitted parts before ordering.
- Front tire
- WTB Resolute TCS Light 700x50mmCheck: Verify the fitted tire’s size marking and rim type.
- Rear tire
- WTB Resolute TCS Light 700x50mmCheck: Verify the rear size; it may differ from the front.
- Drivetrain
- 12-speedCheck: Match the installed drivetrain family, not just its speed count.
- Seatpost diameter
- 31.6 mmCheck: Read the post’s diameter marking; seat-clamp size differs.
- Bottom bracket / shell
- Shimano PF86.5Check: Verify shell type and width, crank interface, and spindle length or spacers.
Bike-specific inspection checklist 20 checks based on 6 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2026 Kona Ouroboros CR · Cyclocross/Gravel · Published sizes: 48, 50, 52, 54, 56, 58
Frame and fork
Inspect the frame and fork →Archived: Frame: Kona Carbon · Fork: Fox AX32 GRIP damper/ 40mm travel / Tapered / 12x100mm
Suspension
Evaluate the suspension →Archived: Fork: Fox AX32 GRIP damper/ 40mm travel / Tapered / 12x100mm
Drivetrain
Check drivetrain wear →Archived: Shifters: Shimano GRX 820 · Rear derailleur: Shimano RDRX822 · Crankset: Shimano GRX 820 40t / Length 48-52 170mm / 52-54 172.5mm / 56-58 175mm · Bottom bracket: Shimano PF86.5 · Cassette: Shimano Deore M6100 10-51t 12spd · Chain: Shimano Deore M6100
Brakes
Inspect the brakes →Archived: Brakes: Brake Calipers: Shimano GRX 820; Front Brake Rotor: Shimano RT56 180mm 6B; Rear Brake Rotor: Shimano RT56 180mm 6B; Brake Levers: Shimano GRX 820
Wheels and tires
Check wheels and tires →Archived: Rims: WTB KOM Team i27 TCS 29" · Hubs: (F) Formula 12x100mm / (R) Formula 12x142mm MS · Front tire: WTB Resolute TCS Light 700x50mm · Rear tire: WTB Resolute TCS Light 700x50mm
Controls and contact points
Archived: Headset: FSA Orbit No.57 ZS44/ZS56 · Handlebar: Kona Gravel Dropbar 31.8mm / Width 48 440mm / 50 460mm / 52-54 480mm / 56 500mm / 58 520mm · Stem: Kona 31.8mm / Rise 6º / Length 48-52 50mm / 54-58 60mm · Seatpost: TranzX Dropper +RAD 31.6mm 125mm · Saddle: WTB Volt Medium
Before and during the test ride
Follow the full used-bike inspection order →Have you owned this model?Help preserve its real-world history by sharing your owner experience.
Share the details that would help another rider understand how this model fits, rides and holds up over time. Velopedia reviews every contribution before publication.
Already contributed? Send me a fresh private edit link
For privacy, Velopedia shows the same confirmation whether or not an experience exists.
Gallery8 images
Checking current listings…
Find this bike on eBay
Search eBay US; check the model year, size and installed components. We may earn a commission from purchases.
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.