Experience the ultimate upgrade for cyclists who demand the best with our latest innovation from our brand, the IRC SX. Made in France and intricately designed and tested, the IRC SX is specifically tailored for riders who constantly push their limits and deliver big WATTS. It offers a solution to recurring problems that have plagued riders for years, such as hard spots, chain tension issues, and the hassle of changing the crown without disturbing the rear wheel.

With precision and efficiency in mind, the IRC SX is designed to be compatible with traditional 10mm frame dropouts. For added convenience, the package includes 10-15mm adapters for easy wheel mounting with 15 or 10mm axles. The IRC SX System features a longer cage fixed on a CNC stainless steel axle, articulated using two annular bearings and a stainless steel spring. This creates a permanent tension on the chain, ensuring a smooth and seamless ride.

We understand the importance of adjustability for our customers, which is why the IRC SX offers adjustable lateral chain tensioning. This is achieved through the derailleur wheel, mounted on an annular bearing and stainless steel axle, and the Teflon roller, providing fluidity and reducing resistance while pedaling. The chain line can be easily adjusted at the derailleur and Teflon roller, with the assembly mounted on stainless steel axles for precise lateral adjustment. Once the optimal adjustment is achieved, simply lock the position of the axle with a 4mm screw in the cage.

Say goodbye to hard spots caused by crown, pinion, or crankset defects. The IRC SX's spring-mounted cage automatically corrects any imperfections in the machining of your transmission parts. And with the ability to change the crown without removing the rear wheel, you can easily make adjustments during training or races without wasting precious time.

The IRC SX is built with durability and precision in mind. Each component, including the 11-tooth aluminum derailleur pulley, Teflon roller, and CNC body/yoke junction axles in Z15Cn17 stainless steel, is designed to withstand the demands of cycling. The tension spring and derailleur pulley axle are also made of heat-treated stainless steel. The package also includes a CNC aluminum adapter for those who need to switch between 15mm and 10mm axles.

Weighing in at only 175g with both the right and left tensioners, the IRC SX strikes the perfect balance between lightweight and durability. It is important to note that our system is not compatible with 1/8' chains. Experience the power and precision of the IRC SX, the ultimate upgrade for serious riders.

Get ready to elevate your cycling experience with the IRC SX. Our innovative design, precision craftsmanship, and attention to detail make it the perfect choice for riders who demand the best. Order yours today and see the difference for yourself.