S&M Old School Lay Back Seat Post 7/8" Chrome, 14"

The S&M Old School Lay Back Seat Post is a USA-made 4130 chromoly post built for vintage and old school BMX applications requiring a 7/8" diameter post. The lay back design positions the seat rearward of the seat tube centerline, and the show chrome finish with knurled clamping section reflects period-correct old school aesthetics and function.

Key Features

• Lay back design — Offsets the seat rearward relative to the seat tube, a geometry characteristic of old school BMX frames that positions the rider further back for a more relaxed and period-correct riding stance
• Knurled seat clamping section — Textured knurling at the seat clamp area improves grip between the post and seat clamp, reducing seat rotation and slippage without relying solely on clamp bolt torque
• Show chrome finish — High-polish chrome plating applied to a display-quality standard, suited to restored or show-condition old school builds where finish quality is a priority
• 4130 chromoly construction — Full chromoly throughout for reliable strength and durability at a lightweight profile relative to mild steel alternatives
• End-finished — Post ends are cleanly finished rather than left raw, consistent with the overall show-quality build standard
• Made in USA — Domestic production with consistent material and manufacturing standards

Technical Specifications

• Brand: S&M Bikes
• Diameter: 7/8" (0.875")
• Length: 14"
• Material: 4130 chromoly
• Finish: Show chrome
• Design: Lay back
• Clamp section: Knurled
• Country of manufacture: USA

Compatibility and Ideal Use Cases

Sized for old school BMX frames with a 7/8" seat tube inner diameter — not compatible with modern 25.4mm or 27.2mm seat tubes without an adapter. Best suited to vintage BMX restoration builds, old school complete builds, or any application where period-correct 7/8" post sizing and lay back geometry are required. The show chrome finish makes this a strong choice for display or show-condition builds where cosmetic standard matters alongside function.