Vintage Shock Post Suspension Seatpost for bicycle, 27.2mm diameter shim when compressed

Condition: Fair used condition with visible surface scratches, scuffs, and some rust on hardware as shown in photos. Mechanism moves, but may need cleaning and lubrication to work perfectly.

Features 'Shock Post' branding with 'patent pend' on head section

Vintage patent pending design with coil spring suspension for added comfort

Material: Alloy aluminum shaft and cast clamp head

Compatible with most vintage and retro mountain bikes, hybrids, or road bikes using 27.2mm seatposts

Single bolt saddle clamp with serrated interface for secure saddle angle adjustment

Approximate length: About 29cm (see ruler reference in photos)

Weight: 340 grams

Perfect for vintage bike restorations, retro MTB or comfort upgrades