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Radocaster 18″

The Radocaster 18” frame and fork kit is built around Sunday’s proven and respected 18” complete bike geometry. The frame’s technical features are based on the Radocaster 20” frame, and feature 8mm hollow dropouts, full chromoly throughout, removable braking hardware, and famous Sunday build features like a miter cut top tube and a reinforcing gusset at the down tube/head tube junction. The fork has a one-piece, integrated-ready steerer tube, full-chromoly construction throughout, and a responsive 25mm fork rake that has a perfect feel for smaller riders when it is paired up with the frame’s 74.5 degree head tube angle. Light in weight and affordable in price at under $300. Perfect for up-and-coming riders.


Geometry & Specs

  • Top tube lengths: 18.5"
  • Head tube angle: 74.5°
  • Seat tube angle: 71°
  • Chainstay length: 11.75-12.00”
  • Bottom bracket height: 10.35”
  • Standover: 7.5”
  • Weight: 4.68 lbs (frame only)

Current Colors

  • Military Blue



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Sunday Bikes

13502 Pumice St.
Norwalk, CA 90650

Phone: (512) 382-9973
Fax: (512) 297-2476

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