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The San Francisco-based bike brand MASH SF has just released the AC-4 frameset — the latest continuation of their popular AC series, featuring aggressive road geometry. While the geometry remains consistent with previous AC models, the newly designed fork mold offers slightly increased tire clearanc
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Brand: MASH SF
Frame & Fork Tubing: Columbus 7005 series airplane‑grade aluminum
Fork Material: Carbon fiber
Seatpost Diameter: Ø27.2 mm
Front Hub Spacing: 100 mm
Rear Hub Spacing: 120 mm
Headset Standard: 1 1/8″ – 1 1/2″ tapered
Bottom Bracket Standard: 68 mm (JIS)
Wheel Size: 700 × 32 c (maximum)
All framesets include:
Frame
Fork
Zero‑Stack sealed headset
Seatpost clamp
Compression plug
Top cap
Both the frame and fork are pre‑drillable to accommodate front and rear short‑reach caliper brakes. The fork mold is designed from the outset with drill‑ready brake mounts and features a concealed brake bridge that appears brakeless until you choose to install calipers.