2021 Breezer Bikes Thunder Base

Category
Rigid MTB
Design
Flat Bar, Rigid, suspension corrected
Frame
Steel
Fork
Steel
Features
Disc brake
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Somewhat aggressive stack and reachvs category

Geometry

S/15
M/17
L/19
XL/20.5
Stack
610mm
609mm
627mm
632mm
Reach
421mm
441mm
455mm
484mm
Stack to Reach Ratio
1.45:1
1.38:1
1.38:1
1.31:1
Seat Tube Length, C-T
370mm
420mm
470mm
521mm
Top Tube Length, Effective/Horizontal Center
585mm
610mm
635mm
666mm
Top Tube Slope
26.1deg
20.3deg
16.7deg
11.8deg
Head Tube Angle
67.7deg
67.7deg
67.7deg
67.7deg
Seat Tube Angle
75deg
74.5deg
74deg
74deg
Head Tube Length
100mm
100mm
120mm
130mm
Bottom Bracket Drop
72mm
70mm
70mm
70mm
Bottom Bracket Height
305mm
307mm
307mm
307mm
Chainstay Length
450mm
450mm
450mm
450mm
Chainstay Length Horizontal
444.2mm
444.5mm
444.5mm
444.5mm
Front-Center
695.5mm
720.9mm
735.8mm
767.7mm
Front-Center Horizontal
691.8mm
717.5mm
732.5mm
764.5mm
Wheelbase
1136mm
1162mm
1177mm
1209mm
Fork Offset/Rake
46mm
46mm
46mm
46mm
Trail
104.9mm
very high
104.9mm
very high
104.9mm
very high
104.9mm
very high
Mechanical Trail
97.1mm
97.1mm
97.1mm
97.1mm
Wheel Flop
36.8mm
36.8mm
36.8mm
36.8mm
Standover Height
765.5mm
785.5mm
811.5mm
839.3mm
Tire to Pedal Spindle
148.5mm
170 mm cranks
168.8mm
175 mm cranks
183.8mm
175 mm cranks
215.6mm
175 mm cranks
Pedal Spindle to Ground Clearance
135mm
170 mm cranks
132mm
175 mm cranks
132mm
175 mm cranks
132mm
175 mm cranks

Base Build

S/15
M/17
L/19
XL/20.5
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
Tire Width
2.6in
2.6in
2.6in
2.6in
Tire Width Max
2.95in
2.95in
2.95in
2.95in
Tire Outer Diameter
754.1mm
754.1mm
754.1mm
754.1mm
Bike Length with Tires
1890.1mm
1916.1mm
1931.1mm
1963.1mm
Crank Length
170mm
175mm
175mm
175mm
Handlebar Width
780mm
780mm
780mm
780mm
Stem Length
45mm
45mm
45mm
65mm

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
Rigid MTB
Source:https://www.breezerbikes.com/bikes/adventure/thunder/thunder