Bosch Cobi Bike SP Connect Adapter Plate

SP Connect Adapter Plate for Bosch COBI.Bike Hub
Designed for a perfect fit – because nothing like it existed.

This custom adapter plate lets you mount a Bosch COBI.Bike Hub to the SP Connect system – ideal if you're tired of workarounds or ugly zip-tie solutions. It locks securely into the COBI base and provides a stable interface for your SP Connect gear.

I couldn't find a proper solution online, so I designed one myself – tested, refined, and now shared with the world.

Features:

Seamless fit to the COBI.Bike Universal Mount

Compatible with SP Connect SPC+ interface

Clean, strong, and reliable connection

Designed for practical use and easy assembly

Printing Tips:

Material: PETG (main body), PLA (support interface, optional)

Print surface: Textured PEI sheet for a clean top finish

Orientation: Print upside-down (top side facing the bed)

Layer height: 0.12 mm

Perimeters: 3 wall lines (4 also fine)

Infill: ~30%, grid or gyroid works great

Supports required

Support Settings:

Support interface material: PLA

Z-distance (top/bottom): 0 mm for a smooth contact finish

Base pattern: Rectilinear

Interface pattern: Lines

Top/bottom interface layers: 3

Combination of PLA for support and PETG for model ensures clean separation

Required Hardware:

1× Countersunk screw M5×16

1× Nut M5

4× Pan head self-tapping screws M2.6×8

2× Original screws from the COBI.Bike Universal Mount or 2× M2.5×8 screws

1× SP Connect Head SPC+ for brake mirror:
https://sp-connect.de/collections/ersatzteile/products/head-spc-plus-brake-mirror

Let me know how it works for you – or remix it to fit your setup even better!