Compare: 2022 Serk Titanium A21 650b wheels S vs 2025 SCOTT Sports Addict Gravel 10 XS/49

Insights

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

Design deviates from other sizes of Serk Titanium A21

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

Design deviates from other sizes of SCOTT Sports Addict Gravel

Stack	548mm	519mm -29mm
Reach	364mm	374.1mm +10.1mm
Stack to Reach Ratio	1.51:1	1.39:1
Seat Tube Length, C-T	485mm	477mm -8mm
Top Tube Length, Effective/Horizontal HT Top	523mm	518mm -5mm
Top Tube Slope	9.3deg	6.8deg -2.5deg
Head Tube Angle	70deg	70deg +0deg
Seat Tube Angle	74deg	74.5deg +0.5deg
Head Tube Length	110mm	95mm -15mm
Bottom Bracket Drop	75mm	73mm -2mm
Bottom Bracket Height	264mm	283mm +19mm
Chainstay Length	430mm	425mm -5mm
Chainstay Length Horizontal	423.4mm	418.7mm -4.7mm
Front-Center	589mm	595.2mm +6.2mm
Front-Center Horizontal	584.6mm	590.7mm +6.1mm
Wheelbase	1008mm	1009.4mm +1.4mm
Fork Offset/Rake	45mm	51mm +6mm
Trail	75.5mm high	75.3mm -0.2mm high
Mechanical Trail	70.9mm	70.8mm -0.1mm
Wheel Flop	24.3mm	24.2mm -0.1mm
Standover Height	—	759mm
Tire to Pedal Spindle	80mm 170 mm cranks	69.2mm -10.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	94mm 170 mm cranks	113mm +19mm 170 mm cranks

Wheel Size	650B/27.5 in 584 mm BSD	700C/29 in 622 mm BSD
Tire Width	47mm	45mm -2mm
Tire Outer Diameter	678mm	712mm +34mm
Bike Length with Tires	1686mm	1721.4mm +35.4mm
Stem Length	—	83mm
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Titanium	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Disc

Actions	Collection I've Ridden	Collection I've Ridden
Source	https://www.serk.cc/a21/	https://www.scott-sports.com/global/en/product/scott-addict-gravel-10-bike?article=4232213020010
Brand	Serk Titanium	SCOTT Sports
Bike	2022 A21 650b wheels	2025 Addict Gravel 10
Size	S	XS/49
Category	All-road/Gravel	All-road/Gravel