Magene Chainrings | QED Lightweight Split Chainrings Set, 110/4 BCD, Shimano 2x11/12-Speed

Training and promotion happen over a professional rider's career. With excellent mechanical quality and the exquisite balance between weight and rigidity, QED series can cope with the stringent demand for equipment during training or competition, and let riders feel the power of mechanical properties all the time.

Light | Smooth | Easy Combination

7075 Ultra-light Aircraft Aluminum

7075 aircraft-grade aluminum alloy has excellent physical properties, offering abrasion resistance, deformation resistance, high stiffness and ultralight weight. Made of 7075 aluminum alloy, the the overall chainring only weighs 143g while maintaining such excellent performance. According to the stress contour based on FEA technical analysis, we strengthen the structural design of the part under concentrated stress. Therefore, it can reduce the deformation under heavy load. We create an excellent balance among weight, rigidity, and durability, which perfectly meets professional cyclists’ demands in training and racing. *QED light-weight split chainring has passed more than 100,000 fatigue tests and more than 40,000 kilometers of endurance tests. *Data comes from Magene Lab.

CNC Machining Technology

CNC stands for Computer Numerical Control, which presents a precise manufacturing process with uniform and consistent standard. Adopting CNC technology ensures that all components work together to function flawlessly. Featuring the cutting-edge CNC technology, the machining and positioning technique is effective and accurate.

Self-developed Tooth Design

After multiple iterations of product design, and research on the performance and wear characteristics of various tooth-shaped chainring, the QED lightweight split chainring adopts a brand new self-developed 3rd generation tooth shape. As a result, the transmission and shifting efficiency have been significantly improved.

We re-calculate parameters related with root, groove, and shape of teeth on chainring and make targeted adjustment so as to improve mechanical transition efficiency under heavy load. Therefore, chain can bite on the chainring tightly and switch precisely and quickly from small to big chainring.

The chain can switch to big chainring by 1/5 round in the fastest case. This ensures accurate and smooth shifting at different speed in different conditions.

The width between each tooth is increased, and the strength between the teeth is further improved. This can effectively prolong the longevity of chainring. The service life of the chain and chainring is increased by about 3% compared with before optimization.

110BCD 4-bolt Chainring

QED lightweight split chainring adopts the widely popular 110BCD 4-bolt specification in the market, which reduces weight and has more comprehensive compatibility.

Magene also provides spider-based power meter solution besides chainring. You can use with exclusive power meter according to personal needs for power meter. QED lightweight split chainring is perfectly compatible with the Magene flagship product QED P505 power meter and PES P505 base power meter.

QED split chainring is compatible with 11 and 12-speed groupsets from Shimano.

* Incompatible crank types: Shimano cranks and similarly shaped crank styles.

 

Specifications:

• Teeth: 50-34T, 52-36T, 53-39T
• Weight: 143g (50-34T)
• Speed Adaptation: Shimano 11 & 12 Speed*
• BCD: 110/4-Bolt
• Chain line: 45mm

Package contents:

• Chainrings (Pair)*
• *No Chainring Bolts included.

IMPORTANT: Compatible with 11 and 12-speed groupsets from Shimano. * Incompatible crank types: Other Shimano cranks and similarly shaped crank styles.

SKU#

*Note: Images are for representational purposes only. Actual size/packaging varies with product type/size.

Cycling Boutique is The Shimano - The official sales, support, and warranty services for Shimano in India.

When you buy a new bicycle in India or already riding a bicycle, you must have noted that Bike brands love this - Be it Trek, Specialized, Cannondale, Giant, Scott, Polygon, Merida, Marin, Bergamont, Btwin, Schwinn, Ridley - you will see all brands bicycles with an Altus component in use. The giant Shimano Gearing Systems and Components collection is in ready stock at Cycling Boutique.

Cycling Boutique is a fully certified and authorized sales and service center for Shimano products in India. Cycling Boutique is well-versed with Shimano components, extensive service track records, and top-notch bicycle mechanics in its service support center. Shimano's cutting-edge technology and service operations directly train and certify our employees.

When buying Shimano bicycle components in India, be assured that Cycling Boutique is the go-to place with 100% original, genuine Shimano components with trustable authenticity and trust. Our friendly technical support staff will be able to address any of your technical issues - be it a silly-looking beginner question to the most challenging solvable bicycle mechanical problems.