Collection: Mountain Bike Spiders

Middleburn mountain bike spiders are precision-engineered in the UK to deliver outstanding strength-to-weight performance and precise chainring alignment. Each spider is CNC-machined from high-grade aluminium, offering stiffness for efficient power transfer while maintaining the lightweight construction riders demand for modern MTB setups. Their modular design makes them a versatile upgrade for those who value performance and durability on demanding trails.

Selecting the correct mountain bike spider depends on your crank model, bolt circle diameter (BCD), and chainring configuration. Middleburn spiders are designed to match specific crank interfaces, ensuring perfect alignment and chainline. At BETD, we list full compatibility information for each product, making it straightforward to find the right spider for your crankset and drivetrain setup.

Yes, one of the main advantages of using Middleburn mountain bike spiders is their flexibility. By switching to a spider with a different BCD or offset, you can easily alter your chainring size or configuration to suit your terrain and riding style. This modular approach allows you to fine-tune gearing for everything from steep climbs to high-speed descents.

Middleburn spiders are primarily designed to fit Middleburn cranks; however, some models are compatible with other crank brands that share the same interface and standards. It’s essential to check specifications before purchasing to ensure proper fitment. Our team can help confirm whether a particular spider will work with your existing MTB crankset.

BETD offers a range of Middleburn mountain bike spiders, including options for single, double, and triple chainring setups. Different BCD patterns allow compatibility with various chainring sizes and configurations. Each model is designed for easy installation, precise alignment, and improved drivetrain efficiency, catering to riders who want both performance and adaptability.

Yes, the spider plays a key role in power transfer and drivetrain stiffness. A high-quality spider like Middleburn’s ensures the chainring remains perfectly aligned, reducing flex and improving pedalling efficiency. Riders often notice smoother shifting and better responsiveness when upgrading to a precision-machined spider designed specifically for MTB use.

Installing or replacing a mountain bike spider is straightforward with the correct tools. Remove the crank arm, unbolt the existing spider, and fit the new one securely to the crank interface, ensuring even torque across all bolts. Applying grease or threadlock where recommended prevents loosening over time. If you’re unsure, contact our experts for guidance to ensure correct installation.