Breezer Radar Pro: A Steel Drop-Bar Bike for Dirt Roads
The Breezer Radar Pro is documented as a steel, rigid-fork drop-bar bicycle for dirt riding, bikepacking and mountain touring. Its current equipment centres on a single 36T chainring and twelve-speed transmission. That combination distinguishes the specified build from older Radar photographs showing two front chainrings.
What defines the Breezer Radar Pro platform
Both frame and fork are described as 4130 chromoly steel. The frame lists 148 mm rear spacing and UDH compatibility; the fork has a tapered steerer, 15 × 110 front axle entry and 51 mm offset. Those are model-specific details to keep attached to this record, rather than specifications for every bicycle carrying the Radar name.
Breezer describes the intended setting as rough dirt and off-road exploration. Its rigid fork and luggage provisions explain why the model can attract touring interest, while the drop handlebar offers a different control layout from a flat-bar mountain bicycle. Neither description establishes a measured comfort or speed advantage.
Read the transmission component by component
The rear derailleur is Shimano GRX 822 Shadow Plus, paired with a GRX 610 right shifter and Shimano SLX 10–51T cassette. The crank’s chainring is listed as 36T. These names describe the documented assembly more accurately than treating GRX as one undifferentiated group covering every component.
Controls vary with frame size
Handlebar width is 420 mm for XS–S, 440 mm for M–L and 460 mm for XL–XXL. Stem reach changes from 70 through 80 to 90 mm across those same groups. A size discussion therefore concerns the complete cockpit as well as the dimensions of the frame.
The brakes and levers are named GRX 610. Rotor entries differ between ends: 180 mm at the front and 160 mm at the rear. The complete-bike weight reference is 30.3 lb in Medium. It is not a shared weighing condition for every Radar or a frame-only measurement.
Keep an older Radar recognisable
The 2017 exhibition photo shows a front derailleur and two visible chainrings. That is a useful visual reason to ask which build a secondhand advertisement describes. It does not identify the photographed gearing’s tooth counts or establish that it is today’s Pro trim.
The Heat Wave model is a Breezer Radar Pro. For a dirt-road touring choice, compare its documented single-chainring gearing and size-specific cockpit with the bicycle you are considering. Heat Wave should not be treated as the colour identity of the older exhibition photo.
FAQ
Does this specification describe a suspension fork?
No. The fork entry identifies a rigid 4130 chromoly fork.
Are both listed brake rotors the same diameter?
No. The front is 180 mm and the rear 160 mm.
Does the 2017 photo establish the current Pro equipment?
No. It is dated Radar family context with a visibly different transmission layout.
The Breezer history and range overview connects this dirt-road role to the company’s broader bicycles. Keep the Breezer collection handy when separating a model name from a riding category.
Sources: manufacturer specifications (https://www.breezerbikes.com/products/radar-pro-25).
Photograph credits and permissions
Photograph 1
Original title: Breezer Radar adventure bike
Creator: Richard Masoner / Cyclelicious; creator: https://www.flickr.com/photos/bike/; requested attribution website: http://www.cyclelicio.us/; creator profile: https://www.flickr.com/people/bike/
Original source URI: https://www.flickr.com/photos/bike/33793005590
License / permission: CC BY-SA 2.0
License / permission URI: https://creativecommons.org/licenses/by-sa/2.0/
Modification notice: The original image file is unchanged by this publisher. Earlier modifications are unassessed; no XMP packet, IPTC data, separate copyright or Software field was found in the examined original.
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