Inversion Comp
Inversion The act or state or reversing the normal order, position or relationship of something.
With so many people on the highway it's hard to see where you are. Flip that perspective, turn it inside out, and rewind it back — what becomes visible on that forgotten gravel road? When clarity isn't given, you have to earn it. If you're prepared to grind the unpaved without perfect sight, the world doesn’t suddenly become clear — it's transparent.
- Gravel / All Road geometry in 4130 butted chromoly steel
- 4130 chromoly steel fork
- 3 pack mounts on down tube. Bottle mounts on seat tube, fork legs and bottom of downtube. Bento box mount on top tube. Fender and rear rack mount. Loads of storage.
- Shimano Sora 2x9 speed drivetrain w/ 11-34T cassette
- Tubeless ready rims and WTB tires
- Clears up to 700 x 50 tires
Designed for all-road and gravel riding, credit card touring, and light bikepacking, Inversion delivers speed, comfort, and adaptability across mixed terrain.
Breezer Bikes ship partially assembled from the factory. We always recommend that a trained mechanic build your bike, but if you follow the assembly video and take your time, you can build the bike yourself.
Watch Assembly Video
Full Equipment: Inversion Comp
Specifications
FRAME & FORK
Frame: Breezer 4130 Butted Chromoly Steel, 44mm headtube, 142mm rear spacing, UDH compatible, three pack mount on top of down tube and waterbottle mount on seat tube and bottom of down tube, bento box mount on to tube,fender and rear rack mount, flat mount disc brake
Fork: Breezer 4130 Chromoly, 1 1/8 steerer tube, waterbottle bosses on each fork leg, fender mount, 12 x 100 thru axle drop out, 50mm offset, flat mount disc brake
DRIVETRAIN
Crankset: Alloy crank 165mm XS, 170mm S, 172.5mm M-L, 175mm XL-XXL, 48T alloy x 32T steel chainring
BB: Sun Race, square taper
Rear Derailleur: Shimano Sora, 9 speed
Front Derailleur: Shimano Sora, 2 speed
Right Shifter: Shimano Sora, 9 speed
Left Shifter: Shimano Sora, 2 speed
Cassette: Sun Race 11-34T
Chain: KMC x9 EPT Anti Rust
WHEELSET
Rims: Alloy, doublewall, hookless, tubeless ready
Spokes: Pillar, 14 gauge
Hubs: Novatech, centerlock
Tires: WTB Riddler 700 x 37 Comp/Fast Rolling 30 TPI
BRAKES
Brakes: Tektro MD-C550
Brake Levers: Shimano Sora
Rotors: Tektro TR160, centerlock
COCKPIT & CONTACT POINTS
Handlebar: Alloy, 400mm XS, 420mm S-M, 440mm, L-XL, 460mm XXL, 31.8 clamp diameter
Grips: 3D forged alloy, +/- 7°, 70mm XS-S, 80mm M-L, 90mm XL, 100mm XXL. 31.8 clamp
Headset: FSA
Saddle: Breezer Sport, steel rails
Seatpost: 6061 aluminum 27.2 x 300mm XS-L, 350mm XL-XXL
Seatpost Clamp: Alloy, 29.8mm
FIT & DETAILS
Color: Smoky Haze (Root Beer)
Weight: 27.2 lbs (Size Medium)
Geometry
XS (48cm)
Seat Tube (C–T): 480
Effective Top Tube: 505
Head Tube Length: 100
Seat Tube Angle: 75°
Head Tube Angle: 68°
Chainstay Length: 435
Wheelbase: 1030.9
BB Drop: 72
Fork Offset: 50
Stack: 529.3
Reach: 363.2
Standover: 763
Wheel Size: 700c
Seatpost Diameter mm: 27.2
Rider Min Height: 5'2"
Rider Max Height: 5'5"
S (52cm)
Seat Tube (C–T): 520
Effective Top Tube: 530
Head Tube Length: 120
Seat Tube Angle: 74.5°
Head Tube Angle: 70°
Chainstay Length: 435
Wheelbase: 1034.2
BB Drop: 72
Fork Offset: 50
Stack: 556.1
Reach: 375.8
Standover: 796
Wheel Size: 700c
Seatpost Diameter mm: 27.2
Rider Min Height: 5'5"
Rider Max Height: 5'8"
M (54cm)
Seat Tube (C–T): 540
Effective Top Tube: 545
Head Tube Length: 140
Seat Tube Angle: 74.5°
Head Tube Angle: 70°
Chainstay Length: 435
Wheelbase: 1050.8
BB Drop: 72
Fork Offset: 50
Stack: 574.9
Reach: 385.6
Standover: 815
Wheel Size: 700c
Seatpost Diameter mm: 27.2
Rider Min Height: 5'8"
Rider Max Height: 5'11"
L (56cm)
Seat Tube (C–T): 560
Effective Top Tube: 570
Head Tube Length: 160
Seat Tube Angle: 73.5°
Head Tube Angle: 70°
Chainstay Length: 435
Wheelbase: 1066.2
BB Drop: 72
Fork Offset: 50
Stack: 593.7
Reach: 394.1
Standover: 833
Wheel Size: 700c
Seatpost Diameter mm: 27.2
Rider Min Height: 5'10"
Rider Max Height: 6'0"
XL (58cm)
Seat Tube (C–T): 580
Effective Top Tube: 590
Head Tube Length: 180
Seat Tube Angle: 73°
Head Tube Angle: 71°
Chainstay Length: 435
Wheelbase: 1070.9
BB Drop: 72
Fork Offset: 50
Stack: 616.8
Reach: 401.4
Standover: 854
Wheel Size: 700c
Seatpost Diameter mm: 27.2
Rider Min Height: 6'0"
Rider Max Height: 6'2"
XXL (60cm)
Seat Tube (C–T): 600
Effective Top Tube: 610
Head Tube Length: 200
Seat Tube Angle: 72.6°
Head Tube Angle: 71°
Chainstay Length: 435
Wheelbase: 1086.8
BB Drop: 72
Fork Offset: 50
Stack: 635.7
Reach: 410.8
Standover: 871
Wheel Size: 700c
Seatpost Diameter mm: 27.2
Rider Min Height: 6'2"
Rider Max Height: 6'5"
Inversion Pins Results to the Surface
How can you see things that have been cut out of the picture?
The gravel road holds what the edit leaves behind — the labor, the residue, and the air required to keep developing. You don't just ride it, you breathe it in.
One Road Ends. Another Begins.
Past the point of no return.
When gravel is paved over, this framework manages both jobs. Shaped by heat, pressure, and repetition, the butted chromoly steel Inversion frame and fork keep clocking in under crushing force. Mounts across the frame and fork turn the bike into economy—supporting water, gear, fenders, and racks. Production doesn’t pause for perfect weather.
Haste Makes Waste. Don’t Worry.
The Breezer drop-bars hold precision at speed.
Fastwork doesn’t equal sloppy work. The Breezer drop-bars use flared alloy construction to keep wrists clear in the drops, conserving effort at pace. Shimano Sora brake levers and shifting, paired with a 3D-forged Breezer alloy stem, keep the operator steady when speed matters. Measure twice, cut once.
Crawl Below the Smoke
You have to keep your head down to escape.
Below the interstate is the gravel foundation that holds it all up. Tubeless-ready Breezer wheels and WTB Riddler 700×37 tires are built to operate in that in-between space — running parallel, carrying the weight, maintaining what moves above.
What Keeps it All Moving
The system runs on people, not machines.
Every system asks for payment, even when the price looks small. The Inversion Comp drivetrain is built around steady contribution — 2× Shimano Sora up front, 9× Shimano Sora in the rear, a wide-range 11-34T SunRace cassette, and a 32-48T alloy crankset that doesn’t force momentum. It takes what you drop in and exhausts it, because nothing moves for free.
One Road Ends. Another Begins.
Past the point of no return.
When gravel is paved over, this framework manages both jobs. Shaped by heat, pressure, and repetition, the butted chromoly steel Inversion frame and fork keep clocking in under crushing force. Mounts across the frame and fork turn the bike into economy—supporting water, gear, fenders, and racks. Production doesn’t pause for perfect weather.
Haste Makes Waste. Don’t Worry.
The Breezer drop-bars hold precision at speed.
Fastwork doesn’t equal sloppy work. The Breezer drop-bars use flared alloy construction to keep wrists clear in the drops, conserving effort at pace. Shimano Sora brake levers and shifting, paired with a 3D-forged Breezer alloy stem, keep the operator steady when speed matters. Measure twice, cut once.
Crawl Below the Smoke
You have to keep your head down to escape.
Below the interstate is the gravel foundation that holds it all up. Tubeless-ready Breezer wheels and WTB Riddler 700×37 tires are built to operate in that in-between space — running parallel, carrying the weight, maintaining what moves above.
What Keeps it All Moving
The system runs on people, not machines.
Every system asks for payment, even when the price looks small. The Inversion Comp drivetrain is built around steady contribution — 2× Shimano Sora up front, 9× Shimano Sora in the rear, a wide-range 11-34T SunRace cassette, and a 32-48T alloy crankset that doesn’t force momentum. It takes what you drop in and exhausts it, because nothing moves for free.
The Inversion Process
Inversion Cafe
On Assignment through a thick and...
Inversion Expert
Looking Too Deep into the...