Conversion from SRAM Rival to Force

Oct 8, 23 9:41

Post #1 of 17 (1214 views)

Hi All,

I'm planning conversion from Rival to Force crank with Red Aero chainring.
https://www.sram.com/...odels/fc-frc-assy-d2
https://www.sram.com/...models/cr-xsnc-dm-d1
Rival has BCD 107 chainring and Force 8 bolts direct mount.

Do you guys know if those 8 bolts are included to crank or chainring set? Or do I need to buy them separately?
Is the whole operation easy that I can do it by myself at home or some special tools are needed?

Thanks in advance for help!

Re: Conversion from SRAM Rival to Force [LukaszP] [ In reply to ]

Oct 8, 23 11:17

Post #2 of 17 (1182 views)

You know that the shortest Force crank arm is 165mm, right?

Re: Conversion from SRAM Rival to Force [jimatbeyond] [ In reply to ]

Oct 8, 23 11:20

Post #3 of 17 (1176 views)

Yep, is the same like the Rival crank in Speedmax. You're suggesting it will be too long?

Re: Conversion from SRAM Rival to Force [LukaszP] [ In reply to ]

Oct 8, 23 12:22

Post #4 of 17 (1153 views)

The 8 bolts came with my 1x chainring I bought from modern bike.
I just upgraded to Sram Force AXS and the swap was easy.
For special tools, you’ll need a torque wrench at minimum. If you don’t currently have Dub bottom bracket you’ll need to change what’s currently on the bike and of course the necessary tools if you do it yourself.

Re: Conversion from SRAM Rival to Force [ProActiveNW] [ In reply to ]

Oct 8, 23 12:29

Post #5 of 17 (1144 views)

ProActiveNW wrote:

The 8 bolts came with my 1x chainring I bought from modern bike.
I just upgraded to Sram Force AXS and the swap was easy.
For special tools, you’ll need a torque wrench at minimum. If you don’t currently have Dub bottom bracket you’ll need to change what’s currently on the bike and of course the necessary tools if you do it yourself.

Great, thanks mate!
Both, Rival and Force have the same DUB BB, so that won’t be a problem.

Re: Conversion from SRAM Rival to Force [LukaszP] [ In reply to ]

Oct 8, 23 13:18

Post #6 of 17 (1127 views)

Most of my customers prefer 155mm cranks for their triathlon bikes.

Re: Conversion from SRAM Rival to Force [jimatbeyond] [ In reply to ]

Oct 8, 23 15:56

Post #7 of 17 (1088 views)

What brand has the 155 mm in their offer except Rotor?

Re: Conversion from SRAM Rival to Force [jimatbeyond] [ In reply to ]

Oct 8, 23 16:36

Post #8 of 17 (1073 views)

jimatbeyond wrote:

Most of my customers prefer 155mm cranks for their triathlon bikes.

Okay so give him an alternative option.. Also, I’ve always believed 155mm seems a bit unnecessary (look at pro crank size).

Re: Conversion from SRAM Rival to Force [jimatbeyond] [ In reply to ]

Oct 9, 23 6:54

Post #9 of 17 (996 views)

jimatbeyond wrote:

Most of my customers prefer 155mm cranks for their triathlon bikes.

The op did not originally inquire about crank length, not even in the slightest. You are a professional troll, you're doing the opposite of helping the discussion by attempting to hijack this thread, and many others, with your pointless musings.

Last edited by: PBT_2009: Oct 9, 23 6:58

Re: Conversion from SRAM Rival to Force [PBT_2009] [ In reply to ]

Oct 9, 23 7:45

Post #10 of 17 (977 views)

Is crank length not important for proper fit?

Re: Conversion from SRAM Rival to Force [jimatbeyond] [ In reply to ]

Oct 9, 23 9:12

Post #11 of 17 (941 views)

Does this vary by riders height at all though? For example, I'm 195.5cm tall and run 170mm cranks on my TT bike.

Re: Conversion from SRAM Rival to Force [treyxt] [ In reply to ]

Oct 9, 23 9:42

Post #12 of 17 (930 views)

Yes, the preferred crank arm length does typically become longer as the rider's height is taller.

170mm could be correct for you. Have you ever tried longer or shorter cranks?

Re: Conversion from SRAM Rival to Force [jimatbeyond] [ In reply to ]

Oct 9, 23 10:32

Post #13 of 17 (914 views)

There are so many other threads on crank length it would be impossible to post the link to them all but the search function is a marvelous thing.

It would be nice if you respected the OPs question and what they need help with instead of burying it and pushing your own unrelated agenda. This wasn't a bike fit thread, it was a maintenance/mechanical one.

Re: Conversion from SRAM Rival to Force [PBT_2009] [ In reply to ]

Oct 9, 23 11:12

Post #14 of 17 (903 views)

Since the OP is buying a new crankset, don't you think it would be a good idea to get the right length?

Re: Conversion from SRAM Rival to Force [LukaszP] [ In reply to ]

Oct 9, 23 11:53

Post #15 of 17 (880 views)

LukaszP wrote:

What brand has the 155 mm in their offer except Rotor?

I will allow myself to repeat the question :)

Last edited by: LukaszP: Oct 9, 23 11:54

Re: Conversion from SRAM Rival to Force [LukaszP] [ In reply to ]

Oct 10, 23 9:40

Post #16 of 17 (797 views)

LukaszP wrote:

LukaszP wrote:

What brand has the 155 mm in their offer except Rotor?

I will allow myself to repeat the question :)

Praxis does as well: https://praxiscycles.com/product/zayante-carbon/

Praxis actually uses SRAM's old three-bolt spider interface. I just bought one for my TT bike, and will be using a P2M spider from a bike that I sold a while back.

Re: Conversion from SRAM Rival to Force [LukaszP] [ In reply to ]

Oct 10, 23 10:06

Post #17 of 17 (786 views)

John Cobb (speedandcomfort.com)

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