Siddhartha SS $299

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This is a whole new breed of one speed bikes. The Retrospec Siddhartha is designed for the modern, urban hybrid rider, with retro appeal and ultimate functionality, placing it among the best single speed bikes. Leather grips, mustache handlebars, and a leather saddle provide the comfort of a beach cruiser, while the track bike frame provides an aggressive ride for urban endeavors. Retrospec has eliminated all of the cables and wires from the bike's design, making it as sleek and minimal as possible, and Quando Coaster brake hubs allow for fast, safe foot braking.

One of the best single speed bikes on the market, the Siddhartha features KT coaster brake hubs, so you can coast and brake with your feet just like a beach cruiser. Front and rear wheels come with 32 spokes, and are built with lightweight, 30-millimeter Deep-V rims for a comfortable ride. A resilient nylon rim tape and CST Super-HP tubes and tires (700x32c) are durable and smooth-rolling. The frame has a classic curved fork, no toe-overlap, and flat top tube, so the front wheel is positioned with exactly enough distance so that you don´t have to worry about rubbing up on the toe clips when you're strapped in. All Siddhartha one speed bikes come with a flat top tube and angled fork for a traditional track-style frame.



We strongly suggest that you take your bike to a professional bicycle mechanic to be built and/or checked out. Incorrect assembly of your bike could result in premature wear and/or failure of individual components. The brakes and derailleurs are not yet set up and need to be properly adjusted in order to stop and shift correctly.


  • Frame: “Urban-Comfort” design steel frame and classic fork
  • Headset: NECO 1/18-inch threadless
  • Handlebar: Promax mustache bar
  • Stem: Promax alloy
  • Grips: Brown leather with stitching
  • Brakes: KT coaster brake
  • Saddle: Brown leather with stitching
  • Crankset: Retrospec alloy white chainwheel 48T
  • Bottom Bracket: NECO cartridge
  • Pedals: Classic alloy pedals
  • Rim: Retrospec alloy 30-millimeter double-wall 700x32C
  • Hubs: KT hubs F- 100-millimeter, R 110-millimeter coaster brake hub 16T
  • Tubes/Tires: CCST 700x32C

Recommended Weight Limit: 250 LBS

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Size XS (45cm) S (49cm) M (53cm) L (57cm)
Seat Tube Length 450mm 490mm 530mm 570mm
Effective Top Tube Length 529 529 529 534
Bottom Bracket shell 1.37x24TPIx68 1.37x24TPIx68  1.37x24TPIx68 1.37x24TPIx68
Seat Post Diameter 25.4 25.4mm 25.4mm 25.4mm
Head Tube Diameter 34mm 34mm 34mm 34mm
Seat Tube Angle 71°
71° 71° 71°
Front Drop Outs 100mm 100mm 100mm 100mm
Rear Drop Outs 110mm 110mm
Recommended Height 5'0-5'3 5'4-5'6 5'6-5'9 5'9-6'0
Standover Height 27 29 31 32