Geometry ?
CTM Koyuk (alloy) 2026 geometry in sizes 520–600: stack 530–604 mm, reach 380–415 mm, head angle 70.5°.
| 520 | 540 | 560 | 580 | 600 | |
|---|---|---|---|---|---|
| Stack | 530 mm | 548 mm | 566 mm | 585.5 mm | 604 mm |
| Reach | 380 mm | 390 mm | 400 mm | 405 mm | 415 mm |
| Head angle | 70.5° | 70.5° | 70.5° | 70.5° | 70.5° |
| Seat angle | 74° | 74° | 74° | 73° | 73° |
| Seat tube (c-t) | 460 mm | 495 mm | 520 mm | 540 mm | 565 mm |
| Head tube | 100 mm | 120 mm | 140 mm | 160 mm | 180 mm |
| Top tube (effective) | 531 mm | 547 mm | 562.5 mm | 584 mm | 600 mm |
| BB drop | 76 mm | 76 mm | 76 mm | 76 mm | 76 mm |
| Chainstay | 430 mm | 430 mm | 430 mm | 435 mm | 435 mm |
| Wheelbase | 1022 mm | 1039 mm | 1055 mm | 1072 mm | 1088.8 mm |
| Fork length | 400 mm | 400 mm | 400 mm | 400 mm | 400 mm |
| Fork offset | 55 mm | 55 mm | 55 mm | 55 mm | 55 mm |
| Stock build by size | |||||
| Stem | 80 mm | 80 mm | 80 mm | 80 mm | 80 mm |
| Stem angle Koyuk 3.0 | −10° | −10° | −10° | −10° | −10° |
| Stem angle Koyuk 2.0 | −6° | −6° | −6° | −6° | −6° |
| Bar width | 420 mm | 420 mm | 420 mm | 420 mm | 420 mm |
Source: ctm.sk, checked 1 Nov 2026 · bar position: worked out from published data
Older model years in the archive: CTM Koyuk 3.0 2024
Stock build
Koyuk 3.0
- Groupset
- Shimano GRX RX610/RX822 1×12 (40T, 10-51)
- Shifters
- Shimano GRX RX610
- Cranks
- Shimano GRX FC-RX610 40T
- Stem
- FSA NS SMR-II 80 mm
- Handlebar
- FSA A-Wing
- Seatpost
- CTM Alloy 27.2
- Saddle
- WTB Solano 142×240 mm
Koyuk 2.0
- Groupset
- Shimano GRX RX610/RX820 2×12 (46-30)
- Shifters
- Shimano GRX RX610
- Cranks
- Shimano GRX FC-RX610 46-30T
- Stem
- FSA Omega 80 mm
- Handlebar
- FSA A-Wing
- Seatpost
- CTM Alloy 27.2
- Saddle
- WTB Solano 142×240 mm
Koyuk 1.0
- Groupset
- Shimano GRX RX400 2×10 (46-30)
- Shifters
- Shimano GRX RX400
- Cranks
- Shimano GRX FC-RX600 46-30T
- Stem
- FSA Omega 80 mm
- Handlebar
- FSA A-Wing
- Seatpost
- CTM Alloy 27.2
- Saddle
- Selle Royal
Source for all builds: ctm.sk, checked 1 Nov 2026
Frames with similar geometry
Stack and reach within 12 mm of size 520 (stack 530 / reach 380 mm).
Hongfu FM279 (2018)size 520 · stack 530 / reach 380 mmCervélo Áspero (2027)size 51 · stack 530 / reach 379 mmRidley Grifn A (alloy) (2026)size XS · stack 530 / reach 379 mmStandert Erdgeschoss Stainless (2026)size 50 PC · stack 529 / reach 381 mmBrodie Romax Adventure 2.0 (2026)size XS · stack 530 / reach 378 mmBrodie Ronin 2.0 (2026)size XS · stack 530 / reach 378 mm
Stack and reach within 12 mm of size 540 (stack 548 / reach 390 mm).
Orbea Denna (carbon) (2026)size S · stack 548 / reach 390 mmOrbea Denna Hydro (alloy) (2026)size S · stack 548 / reach 390 mmSage Titanium Storm King GP (2026)size 48cm · stack 547 / reach 390 mmBerria Naii X (2027)size 51 · stack 548 / reach 392 mmDuratec Rebel S8 (2026)size 53 · stack 548 / reach 388 mmMMR Simun (2026)size M · stack 550 / reach 390 mm
Stack and reach within 12 mm of size 560 (stack 566 / reach 400 mm).
Seven G-758 (Aero Fit) (2026)size 56 · stack 567 / reach 399 mmNorco Search A (alloy) (2027)size S2 · stack 564 / reach 400 mmNorco Search C (carbon) (2026)size S2 · stack 564 / reach 400 mmBaum Orbis X (2026)size 54 · stack 565 / reach 398 mmPanasonic FCXCC04 (2026)size 570 · stack 564 / reach 398 mmSchindelhauer Wilhelm Gravel (2026)size 56 · stack 566 / reach 397 mm
Stack and reach within 12 mm of size 580 (stack 585.5 / reach 405 mm).
Sage Titanium Storm King GP (2026)size 54cm · stack 586 / reach 405 mmSage Titanium Storm King (2026)size 54cm · stack 585 / reach 405 mmCrust Nor'Easter (2026)size Large · stack 584 / reach 406 mmFondriest Ronse (2026)size 58 · stack 584 / reach 404 mmMasi Oltre Strada (2026)size 54 · stack 585 / reach 403 mmDrag Sterrato (2026)size M · stack 583 / reach 404 mm
Stack and reach within 12 mm of size 600 (stack 604 / reach 415 mm).
Breezer Radar (2026)size M (54) · stack 604 / reach 415 mmPride Ti-Rocx (2025)size XL · stack 604 / reach 416 mmPivot Vault (2026)size LG · stack 605 / reach 415 mmMegamo Megamo Silk (2027)size XL · stack 605 / reach 416 mmSilverback SilverRider Gravel Sport (2026)size XXL · stack 605 / reach 416 mmConway Nyvo Carbon (2027)size XL · stack 606 / reach 415 mm
Spotted a mistake or a missing build? Let me know.