2025 TanTan Cycling (Seraph) FM301 Base
- Category
- All-road/Gravel
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Carbon/Composite
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
470 | 500 | 520 | 540 | 560 | 580 | |
Stack | 516mm | 526mm | 538mm | 547mm | 567mm | 588mm |
Reach | 370mm | 376mm | 382mm | 383mm | 389mm | 394mm |
Stack to Reach Ratio | 1.39:1 | 1.4:1 | 1.41:1 | 1.43:1 | 1.46:1 | 1.49:1 |
Seat Tube Length, C-TTT | 424mm | 453mm | 483mm | 496mm | 525mm | 553mm |
Top Tube Length, Effective/Horizontal HT Top | 512mm | 521mm | 534mm | 543mm | 559mm | 574mm |
Top Tube Slope | 10.2deg | 7.9deg | 5.9deg | 5.6deg | 4.7deg | 4.1deg |
Head Tube Angle | 72.1deg | 72.1deg | 72.8deg | 73deg | 73.5deg | 73.8deg |
Seat Tube Angle | 74.6deg | 74.6deg | 74.2deg | 73.7deg | 73.3deg | 73deg |
Head Tube Length | 100mm | 111mm | 121mm | 131mm | 151mm | 171mm |
Bottom Bracket Drop | 72mm | 72mm | 72mm | 70mm | 70mm | 70mm |
Bottom Bracket Height | 274mm | 274mm | 274mm | 276mm | 276mm | 276mm |
Chainstay Length | 410mm | 410mm | 410mm | 410mm | 410mm | 410mm |
Chainstay Length Horizontal | 403.6mm | 403.6mm | 403.6mm | 404mm | 404mm | 404mm |
Front-Center | 565mm | 575mm | 578mm | 580mm | 587mm | 596mm |
Front-Center Horizontal | 560.4mm | 570.4mm | 573.4mm | 576mm | 583mm | 592mm |
Wheelbase | 964mm | 974mm | 977mm | 980mm | 987mm | 996mm |
Fork Offset/Rake | 45mm | 45mm | 45mm | 45mm | 45mm | 45mm |
Fork Length (Axle-To-Crown) | 380mm | 380mm | 380mm | 380mm | 380mm | 380mm |
Trail | 64.5mm mid/neutral | 64.5mm mid/neutral | 60mm mid/neutral | 58.7mm mid/neutral | 55.6mm mid/neutral | 53.7mm mid/neutral |
Mechanical Trail | 61.4mm | 61.4mm | 57.3mm | 56.2mm | 53.3mm | 51.5mm |
Wheel Flop | 18.9mm | 18.9mm | 17mm | 16.4mm | 15.1mm | 14.4mm |
Tire to Pedal Spindle | 49mm 170 mm cranks | 59mm 170 mm cranks | 62mm 170 mm cranks | 64mm 170 mm cranks | 71mm 170 mm cranks | 80mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 104mm 170 mm cranks | 104mm 170 mm cranks | 104mm 170 mm cranks | 106mm 170 mm cranks | 106mm 170 mm cranks | 106mm 170 mm cranks |
Base Build
470 | 500 | 520 | 540 | 560 | 580 | |
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 |
Tire Width | 35mm | 35mm | 35mm | 35mm | 35mm | 35mm |
Tire Width Max | 38mm | 38mm | 38mm | 38mm | 38mm | 38mm |
Tire Outer Diameter | 692mm | 692mm | 692mm | 692mm | 692mm | 692mm |
Bike Length with Tires | 1656mm | 1666mm | 1669mm | 1672mm | 1679mm | 1688mm |
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
All-road/GravelSource:http://www.tantancycling.com/index.php?_m=mod_product&_a=view&p_id=1165