Campagnolo 53 teeth chainring 135 mm 10s

Campagnolo 135 BCD chainring: a key component of your road bike drivetrain

When it comes to a road bike drivetrain, the choice of chainring is crucial. It plays a major role in your pedaling efficiency, power transfer, and overall ride quality. Among the iconic options on the market, the Campagnolo 135 BCD chainring stands out as a top choice for cyclists seeking reliability, precision, and performance.

What is a Campagnolo 135 BCD chainring ?

The Campagnolo 135 BCD chainring is defined by its bolt circle diameter (BCD) of 135 mm. This refers to the distance between the bolt holes that mount the chainring to the crankset, measured along an imaginary circle. The 135 mm standard is specific to many of Campagnolo’s classic 10-speed groupsets, such as Record, Chorus, and Centaur from previous generations.

Designed for Campagnolo’s 5-arm cranksets, this chainring format ensures optimal stiffness, perfect chain alignment, and flawless compatibility with the front derailleur.

Key features

Here are the main characteristics that make the Campagnolo 135 BCD chainring a sought-after component among road cycling enthusiasts:

• CNC-machined construction for precise fit and high-quality finish

• Lightweight, stiff aluminum alloy for the ideal balance of weight and strength

• Optimized tooth profile for smooth and fast shifting, both up and down

• 10-speed compatibility, designed to work seamlessly with Campagnolo cassettes and also compatible with some Shimano and SRAM chains

• Available in multiple tooth counts, typically from 39 to 53 teeth depending on the chosen configuration (standard double or compact)

Why choose a Campagnolo 135 BCD chainring ?

Choosing the right road bike chainring is essential for performance and drivetrain efficiency. The Campagnolo 135 BCD chainring offers:

• Direct and responsive power transfer, even under load

• Exceptional durability thanks to high-grade materials

• Perfect compatibility with Campagnolo’s 10-speed cranksets

• A classic and elegant design, true to the Italian brand’s heritage

Compatibility and replacement tips

Before replacing your chainring, be sure to check:

• The number of teeth on your current chainring to maintain drivetrain balance

• The crankset model — only Campagnolo cranksets with a 135 mm BCD are compatible

• The condition of your chain and cassette, as installing a new chainring on a worn drivetrain can lead to rapid wear

Cyclists looking to modernize their setup can switch to more compact standards like 110 mm BCD, but that requires a full crankset upgrade.

In summary

The Campagnolo 135 BCD chainring remains a trusted option for riders who appreciate the performance and feel of classic 10-speed Campagnolo groupsets. Durable, efficient, and purpose-built for road bike drivetrains, it delivers a smooth and reliable pedaling experience.

Whether you're restoring a vintage build or maintaining your trusted Campy-equipped bike, this chainring is an essential piece to keep your drivetrain running at its best.