2025 TanTan Cycling (Seraph) FM231 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 | Somewhat aggressive stack and reachvs category | Somewhat aggressive stack and reachvs category | Somewhat aggressive stack and reachvs category | Somewhat aggressive stack and reachvs category | Somewhat aggressive stack and reachvs category | Very aggressive stack and reachvs category | Very aggressive stack and reachvs category | Somewhat aggressive stack and reachvs category |
Geometry
46cm | 49cm | 52 | 52cm | 54 | 54cm | 56 | 56cm | 58cm | |
Stack | 500mm | 511mm | 517mm | 517mm | 534mm | 534mm | 555mm | 555mm | 581mm |
Reach | 364mm | 385mm | 391mm | 391mm | 397mm | 397mm | 408mm | 408mm | 415mm |
Stack to Reach Ratio | 1.37:1 | 1.33:1 | 1.32:1 | 1.32:1 | 1.35:1 | 1.35:1 | 1.36:1 | 1.36:1 | 1.4:1 |
Seat Tube Length, C-T | 440mm | 470mm | — | 490mm | — | 510mm | — | 530mm | 550mm |
Seat Tube Length, Unknown | — | — | 490mm | — | 510mm | — | 530mm | — | — |
Top Tube Length, Effective/Horizontal Center | 503mm | 526mm | 530mm | 530mm | 540mm | 540mm | 562mm | 562mm | 576mm |
Top Tube Slope | 8.9deg | 6.4deg | 4.8deg | 4.8deg | 4.5deg | 4.5deg | 4.6deg | 4.6deg | 5.2deg |
Head Tube Angle | 70deg | 72deg | 72.5deg | 72.5deg | 73deg | 73deg | 73.5deg | 73.5deg | 73.5deg |
Seat Tube Angle | 75deg | 75deg | 75deg | 75deg | 75deg | 75deg | 74.5deg | 74.5deg | 74.5deg |
Head Tube Length | 100mm | 105mm | 109mm | 109mm | 127mm | 127mm | 147mm | 147mm | 174mm |
Bottom Bracket Drop | 74mm | 74mm | 74mm | 74mm | 74mm | 74mm | 74mm | 74mm | 74mm |
Bottom Bracket Height | 269mm | 269mm | 269mm | 269mm | 269mm | 269mm | 269mm | 269mm | 269mm |
Chainstay Length | 410mm | 410mm | 410mm | 410mm | 410mm | 410mm | 410mm | 410mm | 410mm |
Chainstay Length Horizontal | 403.3mm | 403.3mm | 403.3mm | 403.3mm | 403.3mm | 403.3mm | 403.3mm | 403.3mm | 403.3mm |
Front-Center | 570mm | 577mm | 581mm | 581mm | 588mm | 588mm | 600mm | 600mm | 615mm |
Front-Center Horizontal | 566.2mm | 572.7mm | 576.3mm | 575.7mm | 583.7mm | 583.7mm | 595.4mm | 595.7mm | 610.7mm |
Wheelbase | 969.5mm | 976mm | 979.5mm | 979mm | 987mm | 987mm | 998.7mm | 999mm | 1014mm |
Fork Offset/Rake | 500mm | 511mm | 43mm | 517mm | 43mm | 534mm | 43mm | 555mm | 581mm |
Fork Length, Unknown | 371mm | 371mm | 371mm | 371mm | 371mm | 371mm | 371mm | 371mm | 371mm |
Trail | -407.2mm | -425.8mm | 63.1mm mid/​neutral | -433.9mm | 59.9mm mid/​neutral | -453.5mm | 56.8mm mid/​neutral | -477.2mm | -504.3mm |
Mechanical Trail | -382.7mm | -405mm | 60.1mm | -413.9mm | 57.3mm | -433.7mm | 54.4mm | -457.6mm | -483.6mm |
Wheel Flop | -130.9mm | -125.1mm | 18.1mm | -124.4mm | 16.8mm | -126.8mm | 15.5mm | -130mm | -137.3mm |
Tire to Pedal Spindle | 57mm 170 mm cranks | 64mm 170 mm cranks | 68mm 170 mm cranks | 68mm 170 mm cranks | 75mm 170 mm cranks | 75mm 170 mm cranks | 87mm 170 mm cranks | 87mm 170 mm cranks | 102mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 99mm 170 mm cranks | 99mm 170 mm cranks | 99mm 170 mm cranks | 99mm 170 mm cranks | 99mm 170 mm cranks | 99mm 170 mm cranks | 99mm 170 mm cranks | 99mm 170 mm cranks | 99mm 170 mm cranks |
Base Build
46cm | 49cm | 52 | 52cm | 54 | 54cm | 56 | 56cm | 58cm | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm |
Tire Outer Diameter | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm |
Bike Length with Tires | 1655.5mm | 1662mm | 1665.5mm | 1665mm | 1673mm | 1673mm | 1684.7mm | 1685mm | 1700mm |
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:http://www.tantancycling.com/index.php?_m=mod_product&_a=view&p_id=1183, https://www.tantanbikes.com/Super-Light-Carbon-Fiber-T1000-Climbing-Bicycle-Road-Bike-Frame-FM231-UDH-T47-Thread-Max-Tire-32C-p6306849.html