2026 OXFELD Observer gravel Base

Design
Drop Bar, Rigid, non-suspension corrected
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category

Geometry

XS
S
M
L
XL
Stack
535mm
554mm
567mm
582mm
600mm
Reach
355mm
366mm
372mm
378mm
386mm
Stack to Reach Ratio
1.51:1
1.51:1
1.52:1
1.54:1
1.55:1
Seat Tube Length, Effective Unknown
450mm
468mm
482mm
500mm
517mm
Top Tube Length, Effective/Horizontal HT Top
500mm
520mm
534mm
550mm
564mm
Head Tube Angle
70deg
70deg
70.5deg
71deg
71deg
Seat Tube Angle
75deg
74.5deg
74deg
73.5deg
73.5deg
Head Tube Length
115mm
135mm
147mm
159mm
178mm
Bottom Bracket Height
Chainstay Length
430mm
430mm
430mm
430mm
430mm
Wheelbase
1002mm
1019mm
1024mm
1025mm
1039mm
Trail
Mechanical Trail
Wheel Flop

Base Build

XS
S
M
L
XL
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
Tire Width
45mm
45mm
45mm
45mm
45mm
Tire Outer Diameter
712mm
712mm
712mm
712mm
712mm
Bike Length with Tires
1714mm
1731mm
1736mm
1737mm
1751mm

Published Sizing Recommendations

Height
12 ft 6 in
to
13 ft 4 in
to
14 ft 2 in
to
14 ft 10 in
to
15 ft 6 in
to

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 Scale
Category Trend
All-road/Gravel
Source:https://www.centrumrowerowe.pl/rower-gravel-oxfeld-observer-pd53871/?v_Id=295274