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Great value high performance alloy ring packs suitable for Magene Cranks and other 104 BCD 4 bolt asymmetric cranks
Great value high performance alloy ring packs suitable for Magene Cranks and other 104 BCD 4 bolt asymmetric cranks
Magene

Magene QED Split Chainrings 104 BCD 4 Bolt Asymmetric- Black

£75.00
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

Magene QED Split Chainrings 104 BCD 4 Bolt Asymmetric- Black

Season:2026

Brand:Magene

Code:17911SIL

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

  • Aircraft-grade aluminium
  • Incredibly lightweight at only 143g
  • 110 BCD 4-bolt compatibility, supports Shimano 11 and 12x groupsets

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).

Features & Benefits

  • 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

Specifications

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