Collection: Mountain Bike Chainrings

Mountain bike chain rings are designed to handle the torque, chain tension, and debris exposure that come with off-road riding. High-precision machining and durable materials ensure smooth power transfer and reliable performance across varied terrain. Our collection of Middleburn chain rings are specifically engineered to withstand impacts and mud contamination while maintaining consistent chain retention and drivetrain efficiency.

You’ll know it’s time to replace your mountain bike chain ring when the teeth appear worn, hooked, or uneven, or if your chain skips under load despite being in good condition. Excessive noise, poor shifting, or inconsistent pedalling feel can also indicate wear. Regularly inspecting your MTB drivetrain can prevent premature cassette or chain wear and maintain smooth performance.

BCD, or Bolt Circle Diameter, determines the spacing of the chain ring bolts and is crucial for ensuring compatibility with your crankset. Different MTB cranksets use different BCD measurements, so it’s important to match the ring to your spider or direct-mount setup. BETD clearly lists BCD information for all Middleburn chain rings to make selection simple and accurate.

Yes, you can change your mountain bike chain ring size to suit your riding style or terrain. A smaller ring improves climbing performance and cadence on technical trails, while a larger ring provides higher top-end speed on flatter routes. Before upgrading, check for frame and derailleur clearance, as well as chain length and drivetrain compatibility.

All Middleburn MTB chain rings are CNC-machined in the UK from high-grade aluminium alloy for exceptional stiffness, strength, and low weight. The precision finish reduces wear and ensures smooth shifting, even in demanding trail conditions. This balance of durability and efficiency makes Middleburn rings a trusted choice for serious mountain bikers.

When fitting a new MTB chain ring, make sure the bolts are clean, properly greased, and tightened evenly to the manufacturer’s recommended torque. Inspect the crank spider or direct-mount interface for wear and replace any damaged hardware. Installing the ring with the correct chainline will ensure smooth shifting and minimise drivetrain friction.

Yes, BETD stocks a wide range of Middleburn mountain bike chain rings compatible with most crank standards and drivetrain setups, including single and multiple-ring systems. Whether you’re running a modern 1x drivetrain or a more traditional setup, our collection includes options to match your bike’s performance needs and riding style.