Internal road bike chainring Campagnolo 39 teeth 11s 135 mm

Campagnolo 39-tooth road bike chainring for 11-speed drivetrains

Looking for a reliable Campagnolo road bike chainring to restore or upgrade your drivetrain? This 39-tooth inner chainring is designed for Campagnolo 11-speed drivetrains. Made from lightweight aluminum, it provides the perfect balance of strength, durability, and shifting performance for demanding road cyclists.

Designed for Campagnolo 11-speed drivetrains

This 39T inner chainring is compatible with Campagnolo 11-speed groupsets and fits a 5-arm crankset. It is an ideal replacement for a worn chainring, helping restore smooth, accurate gear changes while maintaining the original performance of your drivetrain.

Its precision machining ensures fast, quiet shifting and helps reduce wear on both the chain and cassette.

Technical specifications

• Brand: Campagnolo

• Type: Inner chainring

• Compatibility: Campagnolo 11-speed drivetrains

• Number of teeth: 39T

• Position: Inner

• Crank arms: 5-arm

• Bolt Circle Diameter (BCD): 135 mm

• Bolt hole diameter: 7 mm

• Material: Aluminum

• Color: Dark grey

• Weight: 35 g

• Condition: Brand new, supplied without retail packaging

Why choose an aluminum chainring ?

Aluminum is widely used in high-performance bicycle drivetrains because it offers several advantages:

• Excellent stiffness for efficient power transfer.

• Lightweight construction to reduce overall bike weight.

• High resistance to everyday wear.

• Premium finish that perfectly matches Campagnolo components.

Weighing only 35 grams, this chainring helps keep your crankset light without compromising durability.

The ideal replacement for a worn chainring

As mileage increases, chainring teeth naturally wear down, which can lead to chain skipping, poor shifting performance, and accelerated wear of the chain and cassette.

Replacing your Campagnolo 39-tooth chainring restores smooth pedaling and precise shifting, especially when installed together with a new chain if the existing one is worn.

Compatibility

This chainring is compatible with Campagnolo cranksets featuring:

• 11-speed drivetrain

• 5-arm crank

• 135 mm BCD (Bolt Circle Diameter)

• 39-tooth inner chainring

Before purchasing, please verify your crankset specifications to ensure full compatibility.

Key benefits

• Compatible with Campagnolo 11-speed drivetrains.

• 39-tooth inner chainring for smooth and efficient shifting.

• Lightweight and durable aluminum construction.

• Ultra-lightweight at only 35 g.

• Fits 5-arm cranksets with 135 mm BCD.

• Brand new, supplied without retail packaging.

Restore your drivetrain performance

Whether you're replacing a worn component, servicing your bike, or restoring a classic Campagnolo-equipped road bike, this Campagnolo 39T inner chainring delivers the performance, reliability, and quality expected from one of cycling's most respected manufacturers.