Test/Gravelbikes: With the Breezer Inversion Pro, the cult manufacturer is launching an exciting gravel bike with a steel frame that combines a versatile approach with high touring and everyday usability.
Breezer Inversion Pro: The Facts
Frame material: Steel
Wheel size(s): 700c (650b compatible)
Maximum tire clearance: 45mm (700c) / 47mm (650b)
Axle dimensions (v/h): 12 × 100/142 × 12
Mudguard Eyelets: Ja
Luggage carrier eyelets (v/h): Yes / Yes
bottle holder: down tube up, seat tube
Weight wheels v/h/total (with tires and brake discs): 1.640g / 1.751g / 3.391g
Weight complete bike without pedals (size M): 10,68kg
Price: € 2.099
US manufacturer Breezer is not necessarily a big name in the bicycle business, especially in this country. But the company founded by Joe Breeze in the 80s should be well known to mountain bike fans in particular. Along with Tom Ritchey and Gary Fisher, Breeze is considered one of the forefathers of mountain biking. It is all the more astonishing that “real” mountain bikes are the exception in Breezer's portfolio today. However, Joe Breeze himself sees no contradiction in this - for him the mountain bike has always stood for freedom on two wheels and for the experience of nature; So it was almost logical to switch to modern trekking bikes in the recent past and, of course, gravel bikes like the Breezer Inversion Pro. In spirit they are the real successor to the "original mountain bikes" of yesteryear.
In the classic way, Breezer uses a steel frame for the inversion - this is not uncommon for gravel bikes in particular. Steel offers - somewhat generalized - more comfort than aluminum and a minimalist look. Of course, the fact that most Gravel fans don't care about the last gram also speaks for it. But even more so than with other materials, steel is not always just steel - although we have already arrived at the first special feature of the Breezer Inversion. A special Japanese steel is used here, which is particularly easy to hydroform. This allows Breezer to shape the tubes into a special D-shape (hence the name: D'Fusion), which allows the tubes to be connected without adding much weight.
The Inversion is designed as a sporty adventure bike - so it is not surprising that the frame and fork offer a particularly generous passage for wide tires. With 28″ wheels this is up to 45mm – 650b wheels can also be installed, although this hardly increases tire clearance (Breezer states 47mm). The mounting points for accessories are almost as diverse; Mudguards at the front and rear are also possible, as is a luggage rack, for which the fork also has the appropriate eyelets.
The geometry of the Inversion is also quite special - Breezer speaks of a "Compact Geometry". Expressed in numbers, this means that the frame is quite small and compact for its size with its decisive dimensions, i.e. the seat tube, the head tube and the top tube. This should be compensated for in practice with longer stems and its larger support extension. The idea behind it: A smaller frame is lighter and allows more adjustments for different body sizes.
Geometry Breezer Inversion
|seat tube (in mm)
|Top tube horizontal (in mm)
|head tube (in mm)
|chainstay (in mm)
|Wheelbase (in mm)
|Steering angle (in °)
|Seat angle (in °)
|Stacks (in mm)
Breezer is launching two equipment variants of the Inversion for the 2020 model year. With the Inversion Pro for 2.099 euros, we tested the cheaper of the two bikes. At 10,68 kg, the bike is definitely not a lightweight - this is probably primarily due to the steel frame material, because the equipment is not particularly noble, but it is definitely in the solid middle class.
When it comes to the drive, we encounter the epitome of the solid middle class in the drop bar segment: The 105 group from Shimano has been offering very good performance at an attractive price for years. The design of the group on the Inversion Pro is quite well chosen: With a 50/34 compact crank and 11-34 cassette, the range is very good at over 450%, even if a slightly easier gear would not be wrong for steep climbs on unpaved paths.
|Breezer DFusion steel
|Full carbon disc
|WTB ST i21 Disc / Formula
|WTB Exposure 34mm
|Shimano 105 50/34
|TRP HY/RD flat mount
|Breezer Alu 27.2
|WTB Volt Comp
|Breezer B Road
|Oval Concepts 325
Breezer takes an unusual approach when it comes to the brakes: disc brakes, of course - but with the TRP HY/HRD you install a semi-hydraulic system that is somewhere between hydraulic and purely mechanical stoppers in terms of performance. This should definitely be sufficient for a gravel bike, but the bulky brake calipers are certainly not a visual highlight.
The wheels are definitely a highlight of the Breezer: Although the WTB ST i21 rims and Formula hubs do not have large logos, the technical data is right: They are not heavy, the rims are wide enough for thicker tires and also tubeless-compatible. 34mm wide WTB Exposure tires are fitted ex works, which belong to the more reservedly profiled Gravel tires.
The cockpit of the Inversion is remarkable, which is due to the compact geometry of the frame mentioned at the beginning - the stem measures a whopping 100mm in our frame size M and is therefore almost twice as long as that of many other bikes in the test field. This is neither good nor bad - but simply different from most of the competitors.
More tests, products and background information about the Velomotion Gravel Month:
- Storck Grix Platinum Ultegra Di2 gravel bike in test: Race tourer for gravel and off-road
- GT Grade Carbon Pro in the gravel bike test: Comfortable triangle for lots of driving fun?!
- Orbea Terra M30-D in the gravel bike test: Lively bike for training and gravel tours
- NS Bikes Rag+ 2 in the gravel bike test: Convincing aluminum all-rounder
- Rondo Ruut CF 2 in the gravel bike test: Fast gravel bike with a striking look
Let's Gravel: The Breezer Inversion Pro
With its well-made steel frame, the Breezer Inversion Pro has a classic look. The tube shapes, the externally routed cables and the frame construction are reminiscent of more classic road bike frames. The geometry, on the other hand, seems to have been designed a little more atypically, because the Breezer has quite compact dimensions. This is by no means meant in a negative way, quite the opposite. Depending on the frame size, this gives you the option of making the bike more sporty or more comfortable with the help of the stem and seat post, thus meeting a wide range of requirements. In practice, you get a very balanced geometry, which should be ideal for the sporty touring rider.
Due to the classic shape and the compact design, the frame leaves a few points in terms of driving comfort. Because of the good workmanship and the frame material, the Breezer basically has appealing comfort. However, this is somewhat slowed down by, for example, raised seat stays.
The compact frame geometry also has a significant influence on the handling of the Breezer Inversion Pro, because our model in frame size M came with a 100mm stem, which is one of the exceptional cases, especially with gravel bikes. On the one hand, this concept makes perfect sense and, as already described, enables a relatively sporty seating position. In addition, the compact frame is a little crisper to ride and gives an additional sporty touch. However, due to the long stem, some of these direct riding characteristics are lost, especially in terms of handling, since the Breezer can only be steered leisurely around tight corners, especially in connection with the wider handlebars with a noticeable flare.
It's similar when it comes to liveliness: the basic concept is right, but the heavy frame weight of almost 10,7 kilos slows it down. So it takes a bit of time to get up to speed. For multi-day tours and suitability for everyday use, the Breezer Inversion Pro has various mounting options for accessories. In practice, these are definitely sufficient and okay for a tourer, but also leave some room for improvement here. You can't go wrong with a Shimano 105 group and you've found a successful mix of durability and value for money in the gravel gear range.
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