Surly Preamble Frameset - Thorfrost White

View Sizing and Geometry Charts

• 100% Surly Chromoly Natch Steel Tube Frame - Delivers the "Surly Ride Feel" that riders have come to expect, with custom Dropouts, fender and rack compatibility, two bottle cage mounts, and QR wheels for fast, tool-free removal
  
• Versatile Geometry - Designed to play well with both flat and drop bars, slightly sloped top tube on smaller sizes for better standover, and clearance for up to 41mm wide tires with or without fenders
  
• Affordability - A serious steel bike with only the attributes that matter most; a pavement and gravel utility worker that proves you don’t need to cut corners or clip coupons to make a more affordable steel bike. You just need to keep it simple
  
  
• Frame: Surly Preamble, 100% Chromoly steel tubing, E.D. coated
  
• Fork: Surly Preamble, 100% Chromoly steel fork, Disc Only
  
• Seatpost Clamp: Surly Stainless 30.0
  
• Five frame sizes to fit nearly every size rider (XS, S, M, L, XL), with a slightly sloped top tube on XS and Small frames for improved standover and comfort
  
• Friendly with 1x and 2x drivetrains
  
• Mounts for racks, fenders, and two bottle cages (located on the seat tube and down tube)
  
• Front Axle: QR x 100mm
  
• Rear Axle: QR x 138mm Surly Gnot Boost QR
  
• Brake Type: Rear Brake 51mm IS (160-180); Front Brake 51mm IS (140-180)
  
• Headtube: 34mm
  
• Crown Race: 30mm (1-1/8")
  
• Headset: EC34
  
• Seatpost: 27.2mm
  
• Max Chainring: 1x: 42t; 2x: 46/36t max
  
• Bottom Bracket: 68mm BSA, threaded
  
• Tire Clearance Fork: 650b x 47mm or 700c x 44mm
  
• Tire Clearance Frame: XS-SM frames: 650b x 41mm (with or without fenders); MD-XL frames: 700c x 41mm (with or without fenders)
  
• Color: Thorfrost White