2026 TanTan Cycling (Seraph) TT-X68 Base
- Category
- Performance Road
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Carbon/Composite
- Fork
- Carbon/Composite
- Features
- Disc brake
Average stack and reachvs category | Average stack and reachvs category | Average stack and reachvs category | Average stack and reachvs category | Average stack and reachvs category | Average stack and reachvs category | Average stack and reachvs category | Average stack and reachvs category | Average stack and reachvs category | Average stack and reachvs category |
Geometry
44 | 49 | 49 | 52 | 54 | 56 | 56 | 58 | 58 | 61 | |
Stack | 501mm | 514mm | 514mm | 527mm | 544mm | 562mm | 562mm | 591mm | 591mm | 609mm |
Reach | 366mm | 375mm | 375mm | 380mm | 384mm | 388mm | 395mm | 395mm | 402mm | 409mm |
Stack to Reach Ratio | 1.37:1 | 1.37:1 | 1.37:1 | 1.39:1 | 1.42:1 | 1.45:1 | 1.42:1 | 1.5:1 | 1.47:1 | 1.49:1 |
Seat Tube Length, C-T | 433mm | — | 445mm | 456mm | 473mm | — | 494mm | — | 515mm | — |
Seat Tube Length, Unknown | — | 445mm | — | — | — | 510mm | — | 535mm | — | 545mm |
Top Tube Length, Effective/Horizontal HT Top | 496mm | — | 508mm | 531mm | 540mm | — | 562mm | — | 577mm | — |
Top Tube Length, Effective/Horizontal Unknown | — | 508mm | — | — | — | 555mm | — | 570mm | — | 595mm |
Top Tube Slope | 9.8deg | 9.7deg | 9.7deg | 9.9deg | 9.9deg | 7.8deg | 9.4deg | 8.1deg | 10.1deg | 8.8deg |
Head Tube Angle | 70.5deg | 71.75deg | 71.75deg | 72.5deg | 73deg | 73deg | 73.5deg | 73.5deg | 73.5deg | 74deg |
Seat Tube Angle | 75.5deg | 75.5deg | 75.5deg | 74deg | 74deg | 73.5deg | 73.5deg | 73.5deg | 73.5deg | 73deg |
Head Tube Length | 99mm | 109mm | 109mm | 120mm | 137mm | 148mm | 157mm | 175mm | 184mm | 200mm |
Bottom Bracket Drop | 74mm | 74mm | 74mm | 74mm | 72mm | 72mm | 72mm | 72mm | 72mm | 72mm |
Bottom Bracket Height | 265mm | 304mm | 265mm | 265mm | 267mm | 306mm | 267mm | 306mm | 267mm | 269mm |
Chainstay Length | 410mm | 410mm | 410mm | 410mm | 410mm | 410mm | 410mm | 410mm | 410mm | 410mm |
Chainstay Length Horizontal | 403.3mm | 403.3mm | 403.3mm | 403.3mm | 403.6mm | 403.6mm | 403.6mm | 403.6mm | 403.6mm | 403.6mm |
Front-Center | 572mm | 574.5mm | 574mm | 577mm | 579mm | 595.7mm | 592mm | 608.7mm | 606mm | 616mm |
Front-Center Horizontal | 566.7mm | 569.7mm | 569.7mm | 571.7mm | 574.4mm | 591.4mm | 587.4mm | 604.4mm | 601.4mm | 612.4mm |
Wheelbase | 970mm | 973mm | 973mm | 975mm | 978mm | 995mm | 991mm | 1008mm | 1005mm | 1016mm |
Fork Offset/Rake | 47mm | 47mm | 47mm | 47mm | 44mm | 45mm | 44mm | 45mm | 44mm | 47mm |
Fork Length (Axle-To-Crown) | 370mm | — | 370mm | 370mm | 370mm | — | 370mm | — | 370mm | — |
Fork Length, Unknown | — | 370mm | — | — | — | 370mm | — | 370mm | — | — |
Trail | 70.2mm high | 75.2mm high | 62.3mm mid/​neutral | 57.6mm mid/​neutral | 57.6mm mid/​neutral | 68.5mm high | 54.5mm mid/​neutral | 65mm high | 54.5mm mid/​neutral | 48.9mm mid/​neutral |
Mechanical Trail | 66.2mm | 71.4mm | 59.2mm | 54.9mm | 55.1mm | 65.5mm | 52.3mm | 62.4mm | 52.3mm | 47mm |
Wheel Flop | 22.1mm | 22.4mm | 18.5mm | 16.5mm | 16.1mm | 19.2mm | 14.9mm | 17.7mm | 14.9mm | 13mm |
Standover Height | 722mm | 715mm | 734mm | 745mm | 767mm | 785mm | 785mm | 807mm | 807mm | — |
Tire to Pedal Spindle | 63mm 170 mm cranks | 31.5mm 165 mm cranks | 65mm 170 mm cranks | 68mm 170 mm cranks | 70mm 170 mm cranks | 47.7mm 170 mm cranks | 83mm 170 mm cranks | 58.2mm 172.5 mm cranks | 97mm 170 mm cranks | 105mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 95mm 170 mm cranks | 139mm 165 mm cranks | 95mm 170 mm cranks | 95mm 170 mm cranks | 97mm 170 mm cranks | 136mm 170 mm cranks | 97mm 170 mm cranks | 133.5mm 172.5 mm cranks | 97mm 170 mm cranks | 99mm 170 mm cranks |
Base Build
44 | 49 | 49 | 52 | 54 | 56 | 56 | 58 | 58 | 61 | |
Wheel Size | 700C/29 in 622 mm BSD | 700mm BSD 700 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700mm BSD 700 mm BSD | 700C/29 in 622 mm BSD | 700mm BSD 700 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 28mm | 28mm | 28mm | 28mm | 28mm | 28mm | 28mm | 28mm | 28mm | 30mm |
Tire Width Max | 35mm | 35mm | 35mm | 35mm | 35mm | 35mm | 35mm | 35mm | 35mm | 35mm |
Tire Outer Diameter | 678mm | 756mm | 678mm | 678mm | 678mm | 756mm | 678mm | 756mm | 678mm | 682mm |
Bike Length with Tires | 1648mm | 1729mm | 1651mm | 1653mm | 1656mm | 1751mm | 1669mm | 1764mm | 1683mm | 1698mm |
Crank Length | — | 165mm | — | — | — | 170mm | — | 172.5mm | — | — |
Handlebar Width | — | 380mm | — | — | — | 400mm | — | 420mm | — | 42mm |
Stem Length | — | 80mm | — | — | — | 90mm | — | 90mm | — | 10mm |
Stem Angle | — | -7deg | — | — | — | -7deg | — | -7deg | — | — |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Performance RoadSource:tantanbikes.com, www.tantanbicycles.com, TANTAN