XD, XDR, and Splined Cassettes

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Product model code and specification details can be identified with the serial number on the product. Model codes can be used to identify the product type, series name, model name, and product version associated with the production model year. Product details can be used to identify spare parts, service kit, and lubricant compatibility.

Model Code example: RD-XX-E-B1

RD = Product Type - Rear Derailleur

XX = Platform/Series - XX

B1 = Version - (B - Second generation, 1 - first iteration)

To identify the model code, locate the serial number on the product and enter it into the Search by Model Name or Serial Number field at www.sram.com/service.

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Highly specialized tools and supplies are required for the replacement and maintenance of your SRAM components. We recommend that you have a qualified SRAM dealer work on your SRAM components.

If required, install a 1.85 mm cassette spacer as indicated by the chart.

*XS, XG, and PG call out different types of cassette construction. Identify your cassette and driver body type for spacer information.

**PG-720 DH cassette: If your cassette has a Spoke Guard Spacer, consult the PG-720 installation section.

1. Apply grease to the driver body threads.

2. Install the cassette onto the driver body until it is fully seated and the splines are engaged. Use a tool with a guide pin to tighten the cassette while applying inward pressure to the cassette.

3. Use a torque wrench to tighten the cassette.

1. Place a cassette chain whip on a cassette cog. Wrap the chain whip all the way around the cassette to hold the cassette in place.

2. Use a cassette lockring tool with a guide pin to loosen the lockring. Remove the cassette.

1. Place an 11 or 12 speed cassette chain whip on the cassette setup cog. Wrap the chain whip all the way around the cassette.

2. Use a cassette lockring tool with a guide pin to remove the cassette.

After the XS-1270 cassette has been removed 5 times, you must apply new Threadlocker 243, or equivalent, to the inner threads of the driver body prior to reassembly.

Clean the cassette with biodegradable cleaners only. Rinse thoroughly with water and allow the parts to dry, then lubricate the chain with chain lubricant. Lubricate regularly to extend the chain's service life.

SRAM chains and cassettes are 100% recyclable metal.

♻ For recycling and environmental compliance, please visit sram.com/en/company/about/environmental-policy-and-recycling