S&M ATF Frame (Gloss Clear) (20.75")

S&M ATF Description:

The S&M ATF Frame was designed for excellent performance on the trails and in the park and streets. Made in the USA by S&M from Super Therm tubing featuring an integrated headtube, top and downtube gussets, externally machined Mid BB shell, integrated seat clamp, tubular stay bridges, tapered seatstays with bosses for removable U-brake mounts (sold separately), and 5mm thick dropouts. It's no surprise why the S&M ATF Frame is one of the most popular frames around.

NOTE: Raw and Translucent colors may show small veins or patches of surface rust under the finish. This is normal and does not affect the integrity of the product.

Specifications:

• Frame Material: 4130 Chromoly
• Headset Type: Integrated (Campy)
• Gyro Tabs: Not Drilled
• Brake Mounts: Removable (Not included, available here)
• Bottom Bracket Type: Mid
• Seatpost Size: 25.4mm
• Seat Clamp: Integrated
• Dropouts: 14mm Slot, 4Q-Baked
• Color: Gloss Clear
• Weight: 4 lbs 12 oz

Geometry:

• Toptube Lengths: 20", 20.5", 20.75", 21", 21.25", 21.5", 22"
• Chainstay Length: 13.4 - 13.875"
• Headtube Angle: 75°
• Seattube Angle: 71°
• Standover Height: 8.5"
• Bottom Bracket Height: 11.7"

Top your new frame off with fresh bearings. Find an integrated headset here.

Get a new bottom bracket kit here!

Confused by all that geometry? Check out our video below explaining BMX frame geometry and how it affects the feel of a bike.

This product was added to our catalog on May 22, 2026