Beta Fixed-Gear / Single-Speed

sizing & geometry

Be happy with our B. Series

The Retrospec Beta Series Fixie is the ideal commuter bike with its hand-built steel frame, horizontal dropouts, double wall rims, sealed bottom bracket, and brand name components throughout. Our fixed-gear bike mixes speed and sleekness with performance and durability. Riding fixed or single-speed means low maintenance, simple and efficient design, and allows you to connect to the road in a way that other types of bicycles cannot do.


Retrospec’s Beta Series bike features silky smooth KT hubs with a flip-flop hub on the rear wheel. The hub comes with a fixed-gear cog and a freewheel, so you can ride fixed or coast. Both front and rear wheels come with 32 spokes and are built with lightweight 41 mm Super Deep-V rims. The wheels are deep enough for optimized performance but never too heavy. Our wheels also come with a resilient nylon rim tape and CST Super-HP tubes and tires (700x23c). All of our custom fixed gear bikes also come with CST High Performance tires that will have you riding fast and smooth, and without having to worry about getting a flat on imperfect pavement!

We strongly suggest that you take your bike to a professional bicycle mechanic to be built and/or checked out to ensure that the cog and lockring are tightened, the brakes adjusted, and the wheels trued.


  • Hand-built and tig-welded high-tensile strength steel frame and fork with bar spin clearance, horizontal drop outs, and no toe overlap
  • "UrbanComfort" Design
  • Rear flip-flop hub including fixed-gear and freewheel cog 
  • Brakes: Alloy Front and Rear Promax Radius Lever Brakes 
  • Tires: CST High Performance Road Tires 700x23 
  • Fork: Tig Welded 1 inch Threaded 
  • Handlebar: Lightweight Alloy Riser Bar 520mm, 22.2 
  • Stem: Alloy Promax 
  • Crank: Forged Steel 3-piece 165mm 48 tooth, Alloy chain ring 
  • Bottom Bracket: Sealed Bearing NECO
  • Pedals: Well-Go Alloy cage with toe clips
  • Rims: 43mm double wall super deep-v alloy rims 32 hole with black stainless steel spoke
  • Hub Rear: Quando alloy flip-flop hub, 16-tooth freewheel and fixed-gear
  • Hub Front: Quando alloy
  • Seat Collar: Alloy
  • Seatpost: Steel 25.4
  • Grips: Kraton Rubber
  • Weight: 24 lbs
  • Recommended Weight Limit: 250 LBS

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