Magene QED Split Chainrings

A high-precision, ultra-light chainring engineered for riders who demand maximum stiffness, smooth shifting, and race-ready durability.

Constructed from 7075 ultra-light aircraft aluminium, the QED Lightweight Split Chainring offers outstanding stiffness, abrasion resistance, and deformation resistance while weighing only 143g. This makes it an ideal upgrade for riders seeking improved performance without compromising durability.

Using FEA-based stress contour analysis, Magene reinforces high-load areas to minimise flex under power, ensuring consistent performance during sprints, climbs, and long-distance efforts. Precision CNC machining guarantees uniformity, accurate tooth shaping, and perfect alignment for reliable drivetrain engagement.

Magene's third-generation tooth profile enhances chain retention, shifting speed, and overall transmission efficiency. Redesigned tooth roots, grooves, and shapes allow the chain to move from the small ring to the big ring in as little as one-fifth of a crank revolution, even under heavy load.

Compatible with 110 BCD 4-bolt systems, the QED chainring integrates seamlessly with Magene's P505 power meter and supports 11 and 12-speed Shimano groupsets (excluding Shimano cranksets with unique shapes).

Specifications

• Weight: 143g (50-34T)
• Compatibility: Shimano 11 and 12 speed
• Bolt: 4 Bolt
• Chain Line: 45mm

• 7075 aircraft-grade aluminium for ultra-light weight and high stiffness
• Only 143g total weight with exceptional durability
• FEA-optimised structural reinforcement to reduce deformation under load
• CNC precision machining for consistent quality and accurate tooth geometry
• 110 BCD 4-bolt compatibility
• Fully compatible with Magene P505 and PES P505 power meter systems
• Supports Shimano 11 and 12-speed groupsets (except Shimano-shaped cranks)
• Durability tested with over 100,000 fatigue cycles and 40,000 km endurance testing

All UK Mainland Bike Deliveries Over £999 - Free Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).Bike orders under £999 and eBikes will incur a £25 delivery fee.

Free Delivery On Orders Over £199.99 - When you spend more than £199.99 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.

Click & Collect Orders -Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.

At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged.

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