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SRAM Rival 1 GXP Crankset

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sale $144.99 Original price:$176.00

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  • Black, 172.5mm, 50T
    sale $144.99

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Rival 1 GXP Crankset

With one-by drivetrains firmly established as a viable option in the mountain and cyclocross realms, SRAM is now in the process of expanding the one-by paradigm to the road with its Rival 1 group. The Rival 1 GXP Crankset sits at the center of the group to guide the chain through the pedal stroke with perfect lines and outstanding chain retention.

While some of us at Competitive's office remain skeptical of a sole chainring's utility in more mountainous regions, others are eager to sacrifice a top-end gear or two for the weight savings and clean simplicity of the new options. Whatever the case, this setup certainly shows promise for riders living in less aggressive topographies and may be an ideal setup to ditch the front derailleur and save some weight for crits and time trials.

The crank arms are fashioned from forged aluminum for efficient power transfer at a much lower price point than their carbon fiber counterparts. The chainring's teeth feature a distinctly tall, squared-off profile that catches the chain earlier and releases it later in the pedal rotation than standard triangular teeth, improving chain stability and retention. The teeth also have rounded chamfer edges to aid chain retention and minimize deflection. SRAM also keeps b-road adventures in mind by including recesses that help clear mud.

The SRAM Rival 1 GXP Crankset is compatible with GXP-equipped framesets with 130mm and 135mm rear spacing.

  • Simplified crankset for the forward-thinking cyclist
  • Single chainring design improves chainline and pedaling efficiency
  • Unique teeth shape increases chain security and stability
  • Eases effort of clearing mud during off-road events
  • Reduced weight compared to double-chainring set-ups
  • Item #SRM008A

Arm Material
forged aluminum
Arm Length
170mm, 172.5mm, 175mm
Chainring Sizes
42 t, 50 t
BB Type
Compatible Components
SRAM 10-speed 1x road systems, SRAM 11-speed 1x road systems
Claimed Weight
[24mm, 172.5mm, 42t, no BB] 799g
Recommended Use
road cycling, cyclocross, triathlon, gravel
Manufacturer Warranty
2 years

Tech Specs

What do you think about this product?


>Rating: 5

1x hack

I've put it through the wringer

originally bought this product in the wrong crank length. I run a Shimano Claris rear derailuer with 8 speed cassette 11-32. Removed the front derailuer and switched out my old FSA Tempo crankset for this. Have had 0 issues dropping the chain or slipping gears. Great 1x hack for anyone out there.

>Rating: 5

So Glad I Bought This

I've put it through the wringer

I love it so far. I decided to make the move to a 1X on my commuter and I was deciding between a couple of different cranksets. I am glad I went with this one. The price is a great deal for what you are getting. I have the 42T chainring and I for me it is the perfect size to use in the city in combination with the 11spd cassette. I am glad I made the move to a 1X. SRAM does a great job of making it work really well.

>Rating: 5

Solid Deal on a Solid 1x

If you want a no nonsense, inexpensive, get the job done 1x crankset this one is it. Yeah, its 120g heavier than its Force 1 big brother but you pay almost a dollar per gram more. The Rival 1 crank features the same removable spider as the other cranksets in the SRAM road line up which makes it perfect for mounting up direct mount chainrings. I dig the sleek, non-distracting look of this crankset and I'm looking forward to many happy miles on it.

>Rating: 1

Great idea. Bad execution.

I've used it once or twice and have initial impressions

This could be great. But very flaud design. If a company is going to make a system that will work then it needs to be a system that you can buy more of such as more chain rings of other sizes and integrate with existing or Rings that can be purchased. Here is the issue. The Single chain ring, (narrow - wide) is seen on the Sram web site but not offered yet. Also the Rival and Force are not compatible. The Rival chain ring is made with a "hidden" bolt that is build into the chain ring. Thus you can't use any other chain ring. If the other sizes are only offered in "Force" and those are different and not compatible why temp us. This is the new ideal in drive train for sure but give me a break and get it right before you release it. Don't buy this system yet. It's like an 80's one hit wonder. Wait till the system comes out complete system. So you can interchange it.

Doubtful of the criticism here. All chains are narrow/wide. Rival 1 and Force 1 cranks work with 11 speed, but also 10 speed. Presumably wider chains too, though retention might be reduced. Rival/Force cranks can be bought stock with 42 or 50 tooth rings. You buy replacement S-Sync rings, which fit both crank types and are available here @ CC and other places, to get the other tooth counts. Direct mounts work too.

>Rating: 5

Great Bang For Your Buck 1x Crankset

I've put it through the wringer

Looking for a 1x crankset for a gravel or cyclocross bike that isn't going to break the bank? Look no further, the Rival 1 has it all and does a great job with it. I was looking to drop the front derailleur on my beater CX/Gravel/Commuter Diamondback Haanjo trail and the BCD & bolt pattern on the FSA 2x crankset was funky, meaning I decided a GXP threaded bottom bracket & the Rival 1 crank was my solution. It isn't a carbon crank, but I don't need one. For the record, my drivetrain previously was a FSA 2x crankset, an ultegra front and rear (medium cage I think) derailleur, and a 11-32 cassette. I went to the Rival 1 crankset, an SLX 11-40 cassette (Item #SHI00C1), and a Wolftooth Roadlink (Item #WFC0006). I'm running it with a Sram 11sp chain and it works flawlessly. I do wish the Ultegra derailleur had a clutch to keep chainslap down a bit on rougher CX terrain, but the shifting itself works flawlessly. If you have any questions on whether or not this is the right crankset for you, what bottom bracket you'll need with it, or updating your drivetrain to a 1x, don't hesitate giving a shout and I'd be happy to help! My direct line is 801.204.4547 or you can reach me at


Can you use this crankset with SRAM GX components (12 speed cassette, derailleur and chain)?. I’m putting together a 20” mountain bike for an adult (folding dual suspension MTB). The wheels are small so I need a 50T crankset. If I go smaller (like the 32-34 T x1 systems nowadays) I will be almost spinning in place on my lowest gear (11 T cog).


Is the spider removable like their mountain cranks allowing to install direct mount chainrings from another company like Wolftooth?


I have a giant tcx with a 86pf bottom bracket. I would like to replace both bottom bracket and crankset with this scram rival. Can this work if so what bottom bracket?


Will this crankset work with a BB86 bb? Thanks!


What size is the spindle on this crankset 24mm or 30mm

Hi Alexander, Sram's GXP cranks are a 24mm spindle. Give us a call or chat in if you'd like assistance choosing the correct bottom bracket.


I wish to replace my sram 1X rival crankset 172.5 & 42T with: 170 crankset & 38T Does SRAM have this? Any other mftr?

These cranks only ship with the 42T and 50T chainrings. You can get this rival crank, with this chainring:


What is the chainline dimension for this crankset?


Does this item include the GXP BB?

It does not.