Miranda Spider Bosch G4/G5 4-Arm Chainring Spider – KL47.5/50

Miranda Spider Bosch G4/G5 4-Arm – Aluminium Chainring Carrier

The Miranda spider is a purpose-built chainring carrier designed to fit Bosch G4 and G5 mid-motor systems. Crafted from lightweight aluminium, this 4-arm spider offers a strong and precise foundation for mounting your chainring, ensuring smooth power transfer straight from the motor. Its dual bolt circle compatibility (KL47.5mm for G4 and 50mm for G5) makes it a versatile choice for maintenance or upgrades on Bosch-equipped e-bikes. Best for e-bike owners and repair shops servicing Bosch G4 or G5 drive units who need a dependable, direct-fit spider replacement.

Key Features

• Lightweight aluminium construction for durability without added weight
• 4-arm design for stable, secure chainring mounting
• Compatible with both Bosch G4 (KL47.5mm) and G5 (50mm) systems
• Direct-fit replacement part for easy maintenance or upgrades

Specifications

• Compatibility: Bosch G4 / G5 mid-motor systems
• Arm configuration: 4-arm
• Bolt circle diameter: KL47.5mm (G4) / 50mm (G5)
• Material: Aluminium
• Brand: Miranda
• EAN: 5603895589770
• Product code: 8577544

Is this spider compatible with my Bosch motor?

This Miranda spider fits both Bosch G4 and G5 mid-drive motors, thanks to its dual bolt circle sizing of KL47.5mm for G4 and 50mm for G5. Always check your specific motor generation before ordering to ensure a correct, secure fit for your chainring installation.

What material is this spider made from?

The Miranda spider is constructed from aluminium, offering a good balance of strength and low weight. This makes it a durable choice for daily e-bike use while helping to keep the overall drivetrain weight down compared to heavier alternatives.

Can I use this spider to replace a worn chainring carrier?

Yes, this spider is designed as a direct replacement part for Bosch G4/G5 systems, making it ideal for maintenance when your original chainring carrier is worn or damaged. Its 4-arm design ensures compatibility with matching chainrings for a proper fit.