Bosch Gen 2 Bearing Kit

Complete kit of high quality bearings for Bosch 2nd generation engines, including Active Line, Performance Line and Performance Line CX series.
Bearings selected to guarantee a smooth, durable and silent operation of the engine, with dimensions equivalent to the original Bosch components.

Manufactured in precision steel, they offer high wear resistance, excellent behavior under load and a perfect fit in all engine positions.

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Main features

• Compatibility: Bosch Gen2 (Active Line, Performance Line, Performance Line CX)

• Precision bearings (treated steel) – long life and low friction

• Complete kit or individual parts available

• Assembled and tested on professionally overhauled motors at BiciFix

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Video of the engine disassembly process on our YouTube channel:

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Kit contents

• PLB00515 – Small needle roller bearing for freewheeling gearbox

• PLB00516 – Center needle roller bearing

• PLB00517 – Large needle roller bearing (right side)

• PLB00518 – Large right hand bearing (behind chainring)

• PLB00519 – Small Gear Bearing

• PLB00520 – Right crank shaft bearing (21.5×37×9 mm)

• PLB00521 – Left crank shaft bearing (21.5×42×12 mm)

• PLB00522 – Small gear bearing

• PLB00523 – Gear Unit Ball Bearing

• PLB00524 – Needle roller bearing of gear group

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• 100% compatible and have been proven in multiple Bosch Gen2 engine repairs.

• They require mechanical knowledge for proper installation.

• Improper installation may void motor warranty.

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Purchase options

• Complete kit – all bearings and seals required for comprehensive maintenance.

• Individual bearings – available with part number PLBxxxx.

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For best results, we recommend to carry out the replacement together with internal cleaning, greasing and gasket replacement, using specific greases for e-bikes (available in our online store).

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Important! Official Bosch Technical Service

In BiciFix we are official Bosch technical service, authorized to perform:

• Diagnosis and troubleshooting

• Warranty processing

• Replacement of original spare parts

As a fully equipped workshop, we can also perform some repairs not in the manuals – electronic board repair, bearing replacements, et.

If you do not have the right tools or conditions, we will pick up your engine, repair it and send it back to you, ready to be assembled.

Find out more about our service in Bosch Engine Repairs