MIRANDA SPIDER BOOST (BDU4XX) – Bosch Gen4

The Miranda Spider Boost is a high-quality aluminium spider designed specifically for e-bikes equipped with Bosch Gen4 drive units.
It allows the installation of chainrings with a 104 mm BCD (4-bolt) on bikes using the Boost rear hub standard.

This spider is an ideal replacement for the original Bosch one or for mounting compatible chainrings on Bosch Performance Line CX and Cargo Line motors.

Bosch Gen4 Compatibility (System2 – BDU4XX):

Compatible with the following 4th-generation Bosch motors (2020–2022):

• Cargo Line Cruise (BDU450CX)

• Cargo Line Speed (BDU490P)

• Performance Line CX (BDU450CX)

• Performance Line Speed (BDU490P)

Important – Boost vs Non-Boost:
This is the Boost version.
If your e-bike has a narrow rear triangle (135 mm / non-Boost hub), you will need the non-Boost version instead.

Technical Specifications:

• Bosch system compatibility:
  Bosch E-Bike System 2 (Gen4)

• Chainring mount: 4-arm – 104 mm BCD

• Material: Aluminium

• Weight: ~54 g (manufacturer specification)

• Colour: Black

• Manufacturer reference: 2123249

• EAN: 5603895356495