Breezer Radar Geometry: Why More Stack May Add Little Reach
Breezer Radar geometry has a notable pattern in the current Pro chart: XS, Small and Medium have almost the same reach, while their stack increases. A larger label in this part of the range therefore does not mean a similarly large increase in every dimension. Read the horizontal and vertical figures separately.
The Breezer Radar geometry pattern in three sizes
| Size | Reach, mm | Stack, mm | Effective top tube, mm |
|---|---|---|---|
| XS | 416.2 | 571.1 | 580 |
| S | 415.3 | 589.8 | 590 |
| M | 415.4 | 603.8 | 600 |
From XS to Medium, the listed stack increases by 32.7 mm while reach changes by less than a millimetre. Effective top tube, meanwhile, grows by 20 mm. These are not interchangeable ways of describing the same distance; the chart also changes seat-tube angle from 74 to 73 degrees across those sizes.
The upper sizes do add reach
Large, XL and XXL list 421.1, 428.3 and 445.4 mm of reach. Their stack figures are 617.8, 627.1 and 636.5 mm. The whole range cannot therefore be summarised as having constant reach. The useful observation is limited to the particular smaller-size records.
Put the dimensions beside the complete cockpit
Handlebar width changes by size group: 420 mm on XS–S, 440 on M–L and 460 on XL–XXL. Listed stem reach is 70, 80 and 90 mm for the same groups. Almost matching frame reach does not establish an identical riding position when these other equipment dimensions differ.
Standover rises from 779 mm on XS to 828 mm on Medium and 874 mm on XXL. The chart gives all sizes a 69-degree head angle and 444 mm chainstay. These common entries are useful context, but they do not erase the differences that matter during a fitting.
Match the chart to the intended model
The Radar Pro listing groups 48CM, 52CM, 54CM, 56CM, 58CM and 60CM under Configuration. See the Breezer Radar Pro Bike — Heat Wave listing alongside those details. These labels connect the local product to a set of size enquiries; they are not a fit guarantee. The manufacturer’s height guidance is another starting point, and its XXL column supplies a minimum height without a visible maximum to repeat.
The historical Radar picture helps identify an older generation before applying this table. Its 2017 date and two-chainring layout distinguish it from the documented present Pro. No verified geometry table for that photographed exhibit is available here, so the current numbers should not be assigned to it.
FAQ
Does Medium have much more listed reach than XS?
No. Their figures are 415.4 and 416.2 mm respectively.
Does that make their riding positions identical?
No. Stack, other frame dimensions and cockpit equipment also differ.
Is reach constant through the entire range?
No. It increases across the Large, XL and XXL records.
Consider this chart within the riding purposes outlined in the Breezer brand guide. The Breezer bicycle directory helps retain the exact family when discussing a frame size.
Sources: manufacturer specifications (https://www.breezerbikes.com/products/radar-pro-25).
Photograph credits and permissions
Photograph 1
Original title: Breezer Radar adventure bike
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