Old Bike Base to 75x42 mm Oval Base Adapter

This adapter upgrades the classic 25×70 mm “tongue” bike bases to the modern 75×42 mm oval standard used by units like Primaris Outriders in Warhammer 40k.

It installs easily with a drop of blu tack or glue, keeping your original base untouched and your paint job intact. Ideal for bringing older models in line with current visuals while maintaining their unique basing.

The bottom remains open for magnetization. Made from high-quality PLA with precise 3D printing, this adapter ensures a secure, professional-looking fit.

✔️ Key benefits:

• Adapts old 25×70 mm bike bases to 75×42 mm
• Keeps original paint and base work intact
• Compatible with magnetic transport setups
• Improves consistency across your army
• Clean, precise PLA construction