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Old 09-20-11, 11:36 PM   #1
LongIslandTom
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Replacing worn-out chainrings on my SRAM Rival crankset

Seeking to tap the forum's collective wisdom on a repair project..

I've ridden my bike in all conditions-- Rain or shine, plenty of exposure to mud, sand, water spray, etc. After 6000 miles of this kind of abuse, my SRAM Rival crankset's chainrings are inevitably in pretty sad shape, with the "shark's fin" wear pattern pretty evident on the teeth, and the chain-skip symptoms to match.

So it's time for me to swap in some new chainrings and a new chain.

The stock SRAM Rival crankset on my bike is 50/34T with 110mm BCD and 5-bolt pattern. I'm thinking of taking this opportunity to replace the worn-out rings with a 52/36T combination to pick up a bit more speed on downslopes, and I found that FSA has 110mm BCD 5-bolt chainrings available in 52 and 36T (chainrings from FSA's Pro Road series).

My question: Are those FSA Pro Road chainrings compatible with my SRAM Rival crank's spider? And if they are, is it as simple as just bolting the new FSA rings onto the Rival crank's spider using the crank's existing allen-key bolts, or do I need to buy additional hardware?

Thanks for any answers!

Last edited by LongIslandTom; 09-20-11 at 11:41 PM. Reason: I suck at spelling.
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Old 09-21-11, 06:21 AM   #2
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All you should need are the new chainrings. As long as the bolt circle matches you are good to go. You will have to raise your front derailleur to clear the larger diameter big ring and you may need a longer chain if the current one barely clears big-big.
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Old 09-21-11, 07:10 AM   #3
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Worn chainrings cause chain skipping ?? 6000 miles isn't that much. Are you sure they're worn ? Modern chainrings sometimes look worn due to how they're cut for shifting purposes.
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Old 09-21-11, 07:04 PM   #4
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Hillrider: Thanks!

Homebrew01: Yeah, they are worn. I've beaten the crap out of that crankset because I tend to take shortcuts going home on my commute, which takes me through some pretty nasty places that has standing water / mud / sand. I'm guilty of not thoroughly rinsing off the schmutz before riding the bike again the next day. I'm seriously considering outfitting a cheaper beater bike with crappy parts that I don't mind abusing for the commuter role, rather than my Rival-equipped road bike.
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Old 09-21-11, 07:53 PM   #5
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I haven't washed my mtn bike in 20 years and my chainrings are fine ... sort of ....
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