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State Bicycle Co. Undefeated II

State Bicycle Co. Undefeated II
  • Color: Photon Blue Edition
  • Color: Black Prism Edition
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The Undefeated II was designed from the ground up to be the perfect tool for mastering Fixed-Gear Crit Races. The frame is built with Double Butted 7005 Aluminum to maximize strength and minimize weight and features an oversized tapered headtube for additional stiffness. The Essor USA Full Carbon Fork delivers superior handling and responsiveness.

The Undefeated II complete build features premiere, competition-grade components. The Essor USA Aerodash Crankset is built with 7075 aluminum and uses an external bottom bracket to ensure maximum power transfer, while the seamless construction promotes smooth airflow over the crank for greater aerodynamics. The Essor USA Bolt v2 Wheel Set features a large cutout flange design on the hubs to improve stress distribution while also reducing weight, making the wheelset light enough for competition and durable enough to take a beating on the streets. Compact Drop Bars round out the complete build by providing comfort and quick transitions between hand placements.

Our most responsive and powerful machine yet boasts nothing but premiere parts and components, making the Undefeated II the favorite track in track and fixed-gear racing.

bike frame with labeled dimensions
Bike Sizes:
A. Reach 396mm 407mm 403mm 4099mm 417mm
B. Stack 498mm 498mm 513mm 545mm 586mm
C. Standover 752mm 765mm 786mm 815mm 857mm
D. Effective Top Tube 525mm 540mm 555mm 570mm 590mm
E. Head Tube Angle 74.5° 74.5° 74.5° 74.5° 74.5°
F. Head Tube Length 115mm 115mm 130mm 160mm 200mm
G. Seat Tube Angle 74.5° 74.5° 73.5° 73.5° 73.5°
H. Seat Tube Length 490mm 520mm 550mm 58mm 620mm
I. Bottom Bracket Height 268.5mm 268.5mm 268.5mm 268.5mm 268.5mm
J. Bottom Bracket Drop 45mm 45mm 45mm 45mm 45mm
K. Fork Rake/Offset 45mm 45mm 45mm 45mm 45mm
M. Wheelbase 972mm 982mm 983mm 984mm 999mm
O. Chainstay Length 388mm 388mm 388mm 388mm 388mm


Frame 7075 Aluminum, Double Butted, T6 Heat Treated, 1 1/2" to 1 1/8" Tapered Headtube
Fork Full Carbon Fork and Steerer, 1 1/2" to 1 1/8" Tapered Steerer
Wheels 700c Aluminum Wheel Set, Mid Profile Rim Depth: 30mm
Hubs Sealed Bearing, Flip-Flop Hub, Spacing: F: 100mm / R: 120mm, Bolts: F: M9 / R: M10
Spokes 14G, 1 Cross Pattern
Tires Michelin Dynamic Sport, 700c x 23, Suggested Max Tire F/R: 25mm / 28mm
Bottom Bracket BSA Bottom Bracket, English Threaded, 68mm
Crankset Forged 7075 Aluminum, Crank Arm Length: 170mm
Chainrings Forged 6061 Aluminum, 48T, 144 BCD
Cassette/Freewheel 16T Freewheel and Fixed Cog
Chain KMC Z710
Brakes Dual Pivot, Forged Alloy, Clamp Diameter: 24mm
Handlebars Aluminum, Width: 420mm, Drop/Reach: 130mm / 75mm
Stem Forged Aluminum, Clamp Diameter: 31.8mm, Length: 90mm, Rise: +/- 7°
Headset FSA #42 ACB
Seatpost Aluminum, Diameter: 31.6mm, Length: 350mm
Saddle Polyurethane, Steel Rails
Pedals Sold separately

* Subject to change without notice.

Part Numbers

Option UPC MPN
Photon Blue Edition / 49cm 796201627107 42-SKYB-049-DRP
Photon Blue Edition / 52cm 796201627114 42-SKYB-052-DRP
Photon Blue Edition / 55cm 796201627121 42-SKYB-055-DRP
Photon Blue Edition / 57cm 796201627138 42-SKYB-057-DRP
Photon Blue Edition / 59cm 796201627145 42-SKYB-059-DRP
Photon Blue Edition / 62cm 796201627152 42-SKYB-062-DRP
Black Prism Edition / 49cm 796201626988 42-RNBW-049-DRP
Black Prism Edition / 52cm 796201626995 42-RNBW-052-DRP
Black Prism Edition / 55cm 796201627008 42-RNBW-055-DRP
Black Prism Edition / 57cm 796201627015 42-RNBW-057-DRP
Black Prism Edition / 59cm 796201627022 42-RNBW-059-DRP
Black Prism Edition / 62cm 796201627039 42-RNBW-062-DRP