Bosch 15 Teeth Chain Ring - Black, One Size

Bosch 15‑Teeth Chain Ring – Black, One Size

The Bosch 15‑teeth chain ring is a precision component designed for the latest generation of Bosch e‑bike drive units. Its compact size and robust construction make it an ideal choice for urban commuters, recreational riders, and performance enthusiasts alike.

Key Features

• One‑Size Compatibility: The ring is engineered to fit all Bosch Gen 2 drive units (Active Line, Performance Line, CX), ensuring a universal solution for a wide range of e‑bike models.
• 15 Teeth Design: A balanced tooth count that delivers smooth power transfer while maintaining efficient cadence across varying terrain.
• Black Finish: The matte black coating not only offers an elegant aesthetic but also protects the steel from corrosion and wear.
• High‑Strength Steel Construction: Made from premium alloy steel, the ring withstands high torque loads typical of electric assist systems.
• Precision Machining: Each tooth is ground to exact tolerances, guaranteeing optimal chain engagement and minimizing noise.
• Easy Installation: Designed for quick mounting on the drive unit’s crank arm, with a standard bolt pattern that matches Bosch’s specifications.

Performance Characteristics

The 15‑tooth configuration provides a favorable gear ratio that balances acceleration and top speed. When paired with a Bosch motor, riders experience:

• Consistent torque delivery across the entire pedal stroke.
• Reduced chain slippage thanks to precise tooth geometry.
• Lower maintenance requirements due to durable steel construction.

Material and Build Quality

The ring is fabricated from high‑grade alloy steel, then subjected to a controlled heat treatment process. This ensures:

• High fatigue resistance for prolonged use.
• Excellent wear characteristics against the chain’s pins.
• Resistance to environmental factors such as moisture and temperature fluctuations.

Installation Guide

1. Prepare the Drive Unit: Clean the crank arm and remove any old components.
2. Align the Ring: Position the 15‑tooth ring so that its teeth face outward, matching the chain’s direction of travel.
3. Screw in Place: Use a torque wrench to tighten the mounting bolt to the manufacturer’s specified value (typically 10 Nm).
4. Check Alignment: Verify that the ring sits flush against the crank arm and that the chain engages smoothly.

Maintenance Tips

• Inspect the teeth regularly for signs of wear or damage.
• Keep the chain clean and lubricated to reduce friction on the ring.
• Avoid over‑tightening the mounting bolt, which can distort the tooth profile.

Compatibility Summary

The Bosch 15‑teeth chain ring is fully compatible with:

• Bosch Gen 2 Active Line e‑bike drive units.
• Bosch Gen 2 Performance Line e‑bike drive units.
• Bosch Gen 2 CX e‑bike drive units.

Its one‑size design eliminates the need for multiple gear ratios, simplifying both manufacturing and user experience.

Why Choose This Chain Ring?

• Reliability: Proven performance in real‑world cycling scenarios.
• Simplicity: One size fits all, reducing inventory complexity.
• Aesthetics: Sleek black finish complements modern e‑bike frames.
• Durability: Built to endure the demands of electric assistance.

Whether you’re outfitting a new e‑bike or upgrading an existing setup, the Bosch 15‑teeth chain ring delivers exceptional quality and performance in a compact, user‑friendly package.