SRAM Red XG-1290 D1 12 Spd Cassette - Rainbow

The RED XG-1290 is the workhorse among SRAMs X-RANGE™ cassettes and shifts not only fast, but also smoothly through its wide gear ratio range. The 12-speed cassette was developed specifically for the requirements of the electronic eTap AXS wireless shifting systems and offers the greatest possible weight savings through its elaborate, one-piece design. It works perfectly in conjunction with the Flattop® chain of the RED series and SRAM's eTap AXS front derailleur components.

Features of the SRAM RED XG-1290 cassette

• revised construction for smoother and faster shifting
• X-DOME™ design with a very lightweight sprocket set milled from a steel block
• progressive gear graduation (at least five gear jumps with only one tooth)
• small sprocket with 10 teeth to extend the gear range
• compatible with XDR freewheels

Manufacturer's note: Only suitable for use with Flattop® chains.

X-RANGE™ | To meet the diverse applications of modern road cycling, it requires a drivetrain system that offers the right gear in every situation. Since shifting operations at the rear derailleur are inherently more efficient than at the chainring, X-RANGE™ shifts some of the gear range from front to rear. While a smaller, uniform difference of always 13 teeth is applied between the chainrings, the cassettes can come up with a larger transmission range of up to 360 %.

X-DOME™ | The one-piece design of the X-DOME™ technology creates incredibly light, precise and robust cassettes. The open design not only repels dirt better, it also gives the component a longer life and smoother shifting performance.

Material:

• sprocket unit: tool steel (heat treated).
• large sprocket: aluminum (heat treated, hardened)
• elastomer rings

Technologies

DeepRange™
Racers and their drivers are faster and more efficient than ever before. But the translation of our cars has not kept pace with this change. It has been limited by tradition. With the sole aim of improving the modern riding experience on the road, Sram has completely redesigned the road bike ratio. The new Deep Range technology. Not only does it offer more translation bandwidth, but this bandwidth is also better. It has “depth“: A smoother, more useful gear graduation. Intelligent shift settings, made possible by AXS™, bring the simplicity of a 1-speed drive to 2 speeds. So you always have the right gear and the translation is not in your way. Drive faster, more efficiently and more comfortably with Deep Range technology.

XDR™
The XDR drive actuator is a universal mounting system for cassettes with sprockets of less than 11 teeth. It enables lighter and more versatile drives without the need for new axle standards, hub conversions or even new cassette tools. The XDR interface is 1.85 mm longer than XD and is designed for racing hub applications. XDR drive units are compatible with all XD cassettes when the cassette is installed with a 1.85 mm spacer behind it.

SRAM eTap AXS Overview

Simply Beyond: SRAM eTap AXS

X-Range: SRAM eTap AXS