SurlyがこだわるNatch! Double-butted4130 CroMolyスチールフレームは、38mmものタイヤクリアランスを確保し、ダッシュ力に優れた機敏さと、上質な乗り心地をみごとに両立しました。






Tubing    Surly 4130 CroMoly steel. Main triangle is double-butted. TIG-welded. ED Coated
Rear Dropouts    Investment cast Surly track dropouts, 120mm spaced
Brake Compatibility    Standard reach road calipers, but there are no stops for housing
Braze-ons/extras    Eyelets on the rear dropouts and one set of water-bottle mounts on the seattube ’cause we’re not camels
Seatpost diameter    27.2mm
Seatpost clamp diameter    30.0mm Surly stainless, included
Headset/Steerer Tube    EC34/28.6 upper, EC34/30 lower
Bottom Bracket Shell    68mm wide, threaded English 1.37˝ x 24t
Chainring Clearance    Heavy manipulation of the chainstays gives room for a 50t ring while maintaining chainline. Track crank-compatible
Tire Clearance    Room for tires up to 700c x 38mm. Individual tire and rim combos affect tire clearance, but figure on being able to use tires up to 32mm with fenders (p.s. use clip-on fenders)
Fork    4130 CroMoly, lugged and brazed flat crown that is drilled to accept a standard mid-reach (47–57mm) caliper brake. It has clearance for 700c x 38mm tires. There are no eyelets at the dropouts




SURLY / STEAMROLLER Frame Set / Metallic Lilac