40T Narrow-Wide Chainring for TSDZ8 & TSDZ16 Motors – CNC 7075 Ergal | Made in Italy

Product Description

The 40-tooth (40T) narrow-wide chainring for TSDZ8 and TSDZ16 motors is designed to provide maximum chain retention and significantly improve the chain line, ensuring smooth and reliable performance.

Machined from solid 7075 Ergal aluminum using CNC technology, this high-quality chainring is ideal for e-bikes and e-MTBs where precision, strength, and lightweight construction are essential.

Narrow-Wide Anti-Drop Technology

The alternating narrow and wide tooth profile ensures excellent chain grip, drastically reducing the risk of chain drop even on rough terrain.
While extreme impacts or heavy mud buildup can still affect performance, under normal riding conditions the chain remains securely in place.

Key Benefits

• ✅ Improved chain line alignment
• ✅ Reduced risk of chain drop
• ✅ Enhanced aesthetics compared to stock chainrings
• ✅ High mechanical strength and durability
• ✅ Lightweight design for optimal performance

Italian Manufacturing

Designed and manufactured entirely in Italy, this chainring is precision-made at the Officina di Cavezzo (MO), reflecting true Italian craftsmanship and engineering excellence.

Technical Specifications

• Motor compatibility: TSDZ8 – TSDZ16
• Teeth: 40T
• Material: CNC-machined 7075 Ergal aluminum
• Offset: 20 mm
• Color: Black
• Weight: 147 g
• Version: 2025

Drivetrain Compatibility

✔ Compatible with:

• 1–11 speed drivetrains (most chains)
• SRAM Eagle 12-speed

✖ Not compatible with:

• Shimano 12-speed
• KMC X101