Compare: 2026 Sava Gelaro S4 GRX400 Carbon Gravel Bike US Base 580(XXL) vs 2022 TanTan Cycling (Seraph) GR047 Base XL

Insights

Average stack and reach vs trend of all-road/gravel bikes

Design deviates from other sizes of TanTan Cycling (Seraph) GR047

Stack	637.1mm	633mm -4.1mm
Reach	410mm	401mm -9mm
Stack to Reach Ratio	1.55:1	1.58:1
Seat Tube Length, C-T	—	530mm
Seat Tube Length, Unknown	580mm	—
Top Tube Length, Effective/Horizontal HT Top	—	600mm
Top Tube Length, Effective/Horizontal Unknown	604.8mm	—
Top Tube Slope	8.1deg	12.8deg +4.7deg
Head Tube Angle	70.3deg	72deg +1.7deg
Seat Tube Angle	73deg	72.6deg -0.4deg
Head Tube Length	220mm	200mm -20mm
Bottom Bracket Drop	75mm	76mm +1mm
Bottom Bracket Height	276mm	280mm +4mm
Chainstay Length	430mm	430mm +0mm
Chainstay Length Horizontal	423.4mm	423.2mm -0.2mm
Front-Center	664.4mm	639mm -25.4mm
Front-Center Horizontal	664.4mm	634.5mm -29.9mm
Wheelbase	1087.8mm	1057.7mm -30.1mm
Fork Offset/Rake	50mm	50mm +0mm
Fork Length, Unknown	394mm	—
Trail	72.6mm high	63.1mm -9.5mm mid/neutral
Mechanical Trail	68.3mm	60mm -8.3mm
Wheel Flop	23mm	18.5mm -4.5mm
Standover Height	869.8mm	—
Tire to Pedal Spindle	143.4mm 170 mm cranks	110.5mm -32.9mm 172.5 mm cranks
Pedal Spindle to Ground Clearance	106mm 170 mm cranks	107.5mm +1.5mm 172.5 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	40mm	45mm +5mm
Tire Width Max	—	47mm
Tire Outer Diameter	702mm	712mm +10mm
Bike Length with Tires	1789.8mm	1769.7mm -20.1mm
Crank Length	—	172.5mm
Handlebar Width	—	440mm
Stem Length	—	110mm
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Carbon/Composite	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Unknown	Disc

Actions	Collection I've Ridden	Collection I've Ridden
Source	savadeck-bike.com	ae01.alicdn.com
Brand	Sava	TanTan Cycling (Seraph)
Bike	2026 Gelaro S4 GRX400 Carbon Gravel Bike US Base	2022 GR047 Base
Size	580(XXL)	XL
Category	All-road/Gravel	All-road/Gravel