Collection: Middleburn Chainring Bolts

Chainring bolts are the small but essential fasteners that secure the chainring to the crank spider. They hold the chainring firmly in place, ensuring smooth power transfer from the pedals to the drivetrain. Without properly fitted and tightened bolts, the chainring can move or slip, which affects both performance and safety.

Our Middleburn chainring bolts are precision CNC-machined from high-quality aluminium alloy, chosen for its strength-to-weight ratio. They are designed to provide secure fastening while keeping weight to a minimum, making them ideal for both road and mountain bikes. The bolts are also anodised for durability and corrosion resistance, and are available in a range of finishes to complement your bike’s aesthetics.

Middleburn chainring bolts are designed primarily for use with Middleburn chainrings and spiders, but they can also be compatible with many other cranksets that use the same bolt circle diameter and thread type. It is important to check specifications before purchase to ensure proper fitment. If you are uncertain, our team can help confirm compatibility.

The type of bolts you need depends on your chainring setup. Single chainring bolts are shorter and designed specifically for 1x systems, where only one chainring is fitted. Double or triple chainring bolts are longer, allowing them to secure multiple rings together. Using the correct bolt length is essential for safe and reliable installation.

Chainring bolts should be tightened evenly and to the recommended torque setting, usually between 8 and 12 Nm depending on the manufacturer’s guidance. Over-tightening can strip threads or damage the chainring, while under-tightening can cause loosening during rides. Using a torque wrench ensures accuracy and consistency, which helps to prolong the life of the bolts and chainring.

Installing chainring bolts usually requires a standard Allen key, and in some cases a chainring nut wrench or flat tool to hold the back of the bolt in place while tightening. Using the correct tools helps prevent slippage or rounding of the bolt heads, ensuring a secure and professional installation.

Bolts can sometimes work loose due to vibrations and repeated stress. To prevent this, always torque bolts correctly and check them periodically as part of routine maintenance. Applying a small amount of medium-strength threadlocker or grease, depending on preference, can also help maintain a secure fit without making removal difficult when needed.