SRAM XX SL, XX and X0 Eagle Transmission (T-Type) Cranksets are available in different Q-Factors (168 mm and 174 mm). The chainrings that fit these cranks come in both 0 mm and 3 mm offsets in order to fit both Boost (52 mm chainline) and Wide (55 mm chainline) bikes. Therefore, you need to be sure you order the correct chainring offset based on your cranks’ Q-Factor as well as your chainline. So we put together the following information to make it as easy as possible!

## How to Determine Your Chainring Offset

For 168 mm Q-Factor cranks:

- If your bike has a 52 mm chainline, you need a 3 mm offset chainring
- If your bike has a 55 mm chainline, you need a 0 mm offset chainring

For 174 mm (Wide) Q-Factor cranks:

- If your bike has a 52 mm chainline, unfortunately this crankset will not work with your bike and you would need a 168 mm version
- If your bike has a 55 mm chainline, you need a 3 mm offset chainring

## How to Determine Your Q-Factor

If you have the SRAM X0 Eagle Transmission Crankset or the SRAM XX Eagle Transmission Crankset (Non-SL Version), your Q-Factor is 174 mm.

If you have the SRAM XX Eagle SL Transmission Crankset, your Q-Factor could either be 168 mm or 174 mm. If you are not sure what it is, we suggest sending us your SRAM part number (serial number) and we would be happy to let you know what your Q-Factor is. You can find the part number on the inside of the drive side crank arm.

Hi, would you be able to assist with what power meter crank would work with my current set up.

series number:

230110

FC-XO-D1

i believe its a 55mm chain line.

Hi and thanks for the question,

If looking for a great single-sided power meter, the https://powermetercity.com/product/sram-x0-eagle-axs-transmission-left-arm-spindle-power-meter/ is a choice designed exactly for this crankset.

Thanks,

i have a sram XXL crankset with a power meter, the serial number is 07T04630128, what chain ring would I need to 0 or 33m offset, thank you

Hi,

This serial number corresponds to the XX1 Eagle crankset in a 168 Q Factor. Please see the below chart for your frameset’s application:

For 168 mm Q-Factor cranks:

If your bike has a 52 mm chainline, you need a 3 mm offset chainring

If your bike has a 55 mm chainline, you need a 0 mm offset chainring

For 174 mm (Wide) Q-Factor cranks:

If your bike has a 52 mm chainline, unfortunately this crankset will not work with your bike and you would need a 168 mm version

If your bike has a 55 mm chainline, you need a 3 mm offset chainring

Thanks,

My SRAM XXSL Transmission crankset serial #23T33398833 FC-XX-SLP-D1 and the Allied BC40 has a 52mm chainline. Will this work? Thanks for the info. Good stuff!

Hi and thanks for the question.

Your crankset is the 174 Q Factor version. According to SRAM, even with the 3 mm thread-on chainring, this will only be compatible with a 55 mm chainline frameset.

Please see below:

For 168 mm Q-Factor cranks:

If your bike has a 52 mm chainline, you need a 3 mm offset chainring

If your bike has a 55 mm chainline, you need a 0 mm offset chainring

For 174 mm (Wide) Q-Factor cranks:

If your bike has a 52 mm chainline, unfortunately this crankset will not work with your bike and you would need a 168 mm version

If your bike has a 55 mm chainline, you need a 3 mm offset chainring

Thanks,

If the bike frame is spec’d w SRAM Eagle Transmission then doesn’t that mean it has to have a 55mm chainline?

Hi,

Yes. Very likely 55 mm frameset if coming stock with Transmission. You will need to contact the frame manufacturer to find out their chainline specification for your particular bike.

Thanks,

My SRAM XX SL Transmission crankset serial# 23T33398833 and the frame that I ordered has a 52mm chainline. Will this work? Thanks for all the information on your website. Good stuff!

Hi. My xx-sl crank serial number is: 34T34539337

What is the q-factor and chainring offset I will need assuming a 55mm chainline?

Hi and thanks for the question.

Your XX SL crankset is the 168 Q Factor version. Using a 55mm offset frame, you will need the 0 degree offset chainring.

Thanks,

What is the Q factor on my xx sl crankset?

03T30583813

FC-XX-SLP- D1

Hi,

I am sorry. SRAM isn’t getting that serial number to appear in their database. Would you be able to double check that number?

Thanks,

Hi,

I have a new XX SL groupset. Is it possible to confirm the Q Factor please.

170 Cranks

19T32941993

FC-XX-SLP-D1

Hi and thanks for the question.

Your crankset is the 174 Q Factor version.

Thanks,

I have a SRAM XX SL crankset on my 2024 Trek Supercaliber 9.9 AXS XX bike. I’m interested in a power meter spider for this crank. Based on the serial number below, what offset should I purchase? Thank you!

43T35189158

FC-XX-SL-D1

Hi and thanks for the question,

Your XX SL crankset is the 174 Q Factor version. The 3 mm offset chainring is applicable for a 55 mm chainline frameset. Please see below:

For 174 mm (Wide) Q-Factor cranks:

If your bike has a 52 mm chainline, unfortunately this crankset will not work with your bike and you would need a 168 mm version

If your bike has a 55 mm chainline, you need a 3 mm offset chainring

Thanks,

is my q factor?

fc-xx-sl-d1 22t33234224

Hi and thanks for your question.

Your crankset is the 168 Q Factor. Please see the below chart for chainring offset compatibility:

For 168 mm Q-Factor cranks:

If your bike has a 52 mm chainline, you need a 3 mm offset chainring

If your bike has a 55 mm chainline, you need a 0 mm offset chainring

Thanks,

Hi, my serial number on my XX SL crankset is 17T32711457, FC-XX-SL-D, 170mm crank arm. What’s the Q factor and how do I figure out the chainline? The bike is a 2023 Pivot Mach4 SL.

Thank you!

Hi! I just followed up with you in the email you sent in and we’ll have some nice options for you once I hear back from SRAM regarding your XX SL crankset’s Q Factor.

Thanks,

Hi. Wondering if you could help me work out which version I have please, my serial number is 09T31719068, FC-XX-SLP-D1. Thank you.

Hi and thanks for the question. Your crankset is the 174 mm Q Factor. So the below chart will apply:

For 168 mm Q-Factor cranks:

If your bike has a 52 mm chainline, you need a 3 mm offset chainring

If your bike has a 55 mm chainline, you need a 0 mm offset chainring

For 174 mm (Wide) Q-Factor cranks:

If your bike has a 55 mm chainline, you need a 3 mm offset chainring

Thanks,

Hi. I struggling to identify the Q-factor on my T-type XX SL powermeter crankset. Nothing comes up on the Sram serial number lookup. Can you help me identify what it is so I can purchase the correct chainring/offset.

FC-XX-SLP-D1

03T30997664

Thank you so much.

Todd

Hi Todd,

Your XX SL crankset is the 174 Q Factor version. Please see the below chart for compatible chainring offset:

For 168 mm Q-Factor cranks:

If your bike has a 55 mm chainline, you need a 0 mm offset chainring

For 174 mm (Wide) Q-Factor cranks:

If your bike has a 52 mm chainline, unfortunately this crankset will not work with your bike and you would need a 168 mm version

If your bike has a 55 mm chainline, you need a 3 mm offset chainring

Thanks,

What is the Q factor on my xx sl crankset?

03730952467

FC-XX-SLP- D1

Hi Andrew and thanks for the question. Your XX SL crankset is 174 Q Factor.

Thanks,

Thanks for the great information. I have not been able to find this amount of detail anywhere else. I have an SRAM XX SL Transmission crankset and would like to know the Q factor. The serial number is 22T33291997, C-XX-SLP-D1. Thank you for your time. The cranks are 165 mm. Matt

Hi Matt and thanks for the question. Your crankset has a 168 Q Factor. Please see the below chart for compatible chainring offset.

For 168 mm Q-Factor cranks:

If your bike has a 55 mm chainline, you need a 0 mm offset chainring

For 174 mm (Wide) Q-Factor cranks:

If your bike has a 52 mm chainline, unfortunately this crankset will not work with your bike and you would need a 168 mm version

If your bike has a 55 mm chainline, you need a 3 mm offset chainring

Thanks,