MPLS Skyline



All-City is staffed by some passionate track racers who demanded that we build a no-compromise velodrome rocket. Enter the Thunderdome.

We love the way our Big Block handles, so we've taken our tried-and-true track geometry and adapted it to a shorter axle-to-crown carbon fork and a 7000-series aluminum frame.  

Because we’re into the classics, even with our aluminum bikes, it boasts traditional round-profile tubing, beautifully polished aluminum sections, replaceable stainless-steel axle pads, our custom headtube badge and a classic 1 1/8” headtube. It fits a 700 x 25c tire and the fork is drilled to accept a brake.

It’s a stripped-down, race-ready, fire-breathing, left-turning, velodrome monster.


E.D. Coating

In Electrophoretic Deposition, or E.D., coating the frame or fork is placed in a paint bath where an electric charge is applied. This fuses a thin layer of black satin coating to the tubes inside and out. This coating acts as both a rust preventative inside and a primer out.

Custom Details

We’re way into the handbuilt touches when it comes to our frames. Which is why you’ll find things like internal cable routing, custom dropouts, lugged crown forks, reinforcements on the bottle bosses, hidden fender mounts, etc on our framesets.

7000 Series Tubing

7000 Series is the benchmark for high end aluminum tubesets. It is both harder and stronger than 6000 series delivering uncompromising responsiveness.

Signature Dropouts

The Thunderdome’s alloy track ends feature removable stainless steel plates, and classic good looks.

Frame + 7000 Series Aluminum
Fork + Carbon blades, straight alloy steertube
Rear spacing + 120mm
Brake Compatibility + Front only, short reach road caliper 39-49mm
Seatpost diameter + 27.2
Seatpost clamp + 31.8
Headset + 1-1/8" threadless, EC34 upper & lower, Crown race 30.0
Bottom Bracket Shell + 68mm English
Chainring clearance + 57 tooth max
Tire clearance + 700x25
Thunderdome Geometry Linedrawing
Select up to 3 sizes to view:

Size 49cm 52cm 55cm 58cm
Head Tube Angle (A) 73.5 74 74.5 74.5
Seat Tube Angle (B) 75 74.5 74.5 74.5
Top Tube Length (C) 535 550 565 585
Seat Tube Length (D) 490 520 550 580
Chainstay Length (E) 396 396 396 396
Bottom Bracket Drop (F) 58 58 58 58
Fork Offset (G) 30 30 30 30
Total Fork Length (H) 370 370 370 370
Head Tube Length (I) 110 130 150 175
Standover (J) 772 796 821 847
Wheelbase (K) 955.6 961.1 971.8 991.8
Stack (L) 524.6 545.3 566.1 590.2
Reach (M) 394.4 398.8 408 421.3
Handlebar Width
Stem Length
Crank Arm Length
FM4731 Frameset 46cm
FM4736 Frameset 49cm
FM4737 Frameset 52cm
FM4738 Frameset 55cm
FM4739 Frameset 58cm
FM4732 Frameset 61cm