Shimano SPD-SL Road Pedal to Flat Pedal Adapter

Summary

'Flatz' is a 3D-printable snap-in flat pedal adapter designed for Shimano SPD-SL road pedals, allowing riders to use regular footwear without carrying an extra pair of cycling shoes.
 

The adapter clips directly into the pedal using the standard SPD-SL cleat retention mechanism, converting the road pedal into a practical flat/platform for short commutes, grocery runs, café stops, and casual riding.
 

This design features an optimized high-grip ridge pattern engineered specifically for sneaker soles, improving traction and foot stability while maintaining a lightweight, low-profile form factor. The platform geometry has been iteratively refined for improved comfort, load distribution, and lateral grip.
 

Same STL File is intended for both Left and Right Pedals.
 

Features:
• Snap-in SPD-SL (PD-R550 & PD-RS500) compatible mounting interface - | Compatible with Tiagra, 105, Ultegra and Dura-Ace Pedals |
• Sneaker-optimized grip ridge geometry
• Lightweight and durable printable construction
• Fully printable with standard FDM printers, with pre-modelled supports for overhangs!
 

Designed for convenience, utility, and everyday versatility, I hope this bridges the gap between performance road pedals and casual everyday riding!
 

NOTE: This is a Work-In-Progress, Any Suggestion/Reviews are HUGELY APPRECIATED. I one day plan to start selling a FINALIZED & REFINED version as an actual product, for cyclists & commuters who do not have access to a 3D-Printer.

Feel free to remix and share ;D !

Print Settings

• Printer brand:

  Anycubic

• Printer:

  Kobra 2 Neo

• Rafts:

  No

• Supports:

  No

• Resolution:

  0.2mm Layer Height

• Infill:

  15-25% Grid or Cubic Infill | 3-4 Walls

• Filament material:

  PLA

• Notes:

  Don't turn on supports, as the overhangs & bridges are supported by pre-modelled supports, which can be easily removed.

  Use PLA or PET-G.