Bosch Classic Line/Classic Line+ e-bike gear kit (OEM: 1270020202 - 5515213021 - 1270020XXX)

"High-quality 2-piece gear for Bosch Classic e-bike motors – durability, precision, and performance"

This gear, specially developed for 1st-generation Bosch Classic motors, is the ideal choice for demanding e-bike riders who value quality and reliability. Manufactured in Germany, it impresses with its particularly robust construction made of polyamide 12 reinforced with 15-20% carbon fiber. This innovative material combination guarantees exceptional stability and durability – even under intensive use.

The two-piece gear is mounted on the gear hub using seven M5 stainless steel screws (T25) at the marked locations. The gear is designed to ensure optimal power flow, while the disc serves as a retaining element. This sophisticated design ensures efficient power transmission and guarantees a long service life.

Thanks to our precise manufacturing technology, we ensure that your electric bike runs reliably and stably at all times. This gear is an essential spare part that ensures the long-term performance of your e-bike and keeps it in top-notch condition for the long term – for a safe and comfortable ride every time.

ℹ️ Material ℹ️

• Our high-strength, modified polyamide 12 – long-chain and reinforced with 15-20% carbon fiber – offers up to 130% greater strength and stability than POM. This exceptional strength makes the material virtually indestructible and ideal for demanding applications where durability and reliability are critical.

✅️ Compatibility ✅️

• Compatible with Bosch Classic Line/Classic Line+ e-bikes and other motors that use the gear with Gen.1 V1 according to OEM No.: 1270020202 & 551521302 or Gen.1 V2 according to OEM No.: 1270020XXX.

⚠️ Technical data ⚠️

• Outer diameter: 128.60 mm ± 0.25 mm
• Number of teeth (external gearing): 60T.
• Height: 13.15 mm ± 0.15 mm
• Heat resistant up to: approx. 205°
• Color: Black (In the product photo it is shown in white for illustration purposes)
• The gearing on the Generation 1 V1 hub has 2 missing teeth (see red markings on the product photos).
• The teeth on the Generation 1 V2 hub have no missing teeth and are longer than those on the Generation 1 V1 hub.
• This guide will help you identify the differences between the gear versions and assist you in assembling the gear kit. Start guide (German)  Start guide (English)

✅️ Scope of delivery ✅️

• 1x Bosch Classic Line/Classic Line+ Gen.1 V1 gear KIT according to OEM no.: 1270020202 & 551521302 or Gen.1 V2 according to OEM no.: 1270020XXX (hub not included!).

 ℹ️ Assembly instructions ℹ️

• Before reassembling, make sure the drive gear rotates smoothly. If it's blocked or difficult to move, this may indicate foreign objects. In this case, we recommend disassembling the housing and thoroughly cleaning it to prevent future damage.
• The two-piece gear is mounted on the hub according to the assembly video. Pay attention to the markings on the components (can only be mounted in one position).
• Tightening torque of the screws: max. 2.0 Nm  (Medium strength threadlocker recommended)
• Support help via the "Online Shop Chat " function

Keep your e-bike in optimal condition with this high-quality spare part!