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We are at the core of our very heart a track bike brand, always have been, always will be.  Because of that, we wanted to up jump our velodrome game, and create a full on race specific alloy sprint monster. 

Enter the Thunderdome. 

We've taken our tried and true Big Block geometry and adapted it to a shorter axle to crown carbon fork and alloy frameset.  Because we love the lines of the old Cannondale track bikes, we went with traditional round tubing, a standard 1 1/8" headset, and to give it that AC touch, polished panels on the downtube and chainstay. 

It is stiff, fast, and ready to race.


left right

Build Specs

Frame: 7000 Series Aluminum

Fork: Carbon with alloy steerer, drilled for a brake

Headset: Standard 1 1/8"

Bottom Bracket: 68mm

Rear Spacing: 120mm

Seatpost: 27.2

Seatpost Clamp: 31.8

Tire Clearance: 700 X 25

Geometry pt 2

Size49 cm 52 cm 55 cm 58 cm
(A) Head Tube Angle 73.5° 74° 74.5° 74.5°
(B) Seat Tube Angle 75° 74.5° 74.5° 74.5°
(C) Top Tube Length 535 mm 550 mm 565 mm 585 mm
(D) Seat Tube Length 490 mm 520 mm 550 mm 580 mm
(E) Chainstay Length 396 mm 396 mm 396 mm 396 mm
(F) Bottom Bracket Drop 58 mm 58 mm 58 mm 58 mm
(G) Fork Offset 30 mm 30 mm 30 mm 30 mm
(H) Total Fork Length 370 mm 370 mm 370 mm 370 mm
(I) Head Tube Length 110 mm 130 mm 150 mm 175 mm
(J) Wheelbase 955.6 mm 961.1 mm 971.8 mm 991.8 mm
Standover 772 mm 796 mm 821 mm 847 mm
Stack 524.6 mm 545.3 mm 566.1 mm 590.2 mm
Reach 394.4 mm 398.8 mm 408.0 mm 421.3 mm

Part Numbers

Part Number Size Color Description
FM4766 49cm Black / Polished Thunderdome Frameset 49cm
FM4767 52cm Black / Polished Thunderdome Frameset 52cm
FM4768 55cm Black / Polished Thunderdome Frameset 55cm
FM4769 58cm Black / Polished Thunderdome Frameset 58cm

The Nature Boy 853 is Real and Coming this Fall

August 27, 2014 | Jeff


Yes, it's real, and it's stunning. The wait will soon be over for those of you hoping that we would apply some Macho King magic to our beloved single speed disc platform.

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