The Sunday Discovery Frame is built from 100% Chromoly with Nightshift Style Double top and down tube for extra strength. Sunday uses tapered chan stays and seat stays as well to keep everything strong yet light.

• 100% 4130 Chromoly Frame
• Nightshift style, double-butted, top and down tubes with proven internal gusseting.
• Removable U-brake hardware and Gyro tabs
• Integrated seat clamp
• Butted Seat Tube & Miter Cut Top Tube:
  The seat tube is where all three triangles of the frame meet and it is crucial to keep this tube strong.
• Tapered Chain & Seat Stays:
  Both chain and seat stays taper to provide a refined and clean look to the frame while still providing strength. The are both angled on the inside for improved chain clearance and weight savings.
• Hollow Dropouts with Chain Tensioners:
  Hollow 8mm wide dropouts are as light as a solid 5mm dropout, but over twice as strong. There is a small internal chain tensioner to hold the wheel in place as well as simplify wheel removal.

• Top Tube Lengths: 20.75″ or 21″
• Head Tube Angle: 75
• Seat Tube Angle: 71
• Chain Stay Length: 13.25-13.5
• Bottom Bracket Height: 11.8
• Standover: 9
• Tire Clearance: 2.4
• Head Tube Length: 5
• Weight: 5 lbs