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SRAM Force 1 Type 2.1 Rear Derailleur
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Item # SRM007G

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  • Grey, Medium Cage ($183.99)
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Item # SRM007G


Shift with the force.

Last season, SRAM brought one-by 'cross drivetrains into the mainstream with its groundbreaking CX1 groupset. This year, it ups the ante with the all-new Force 1 groupset, which maintains impeccable cyclocross functionality and transfers beautifully over to road and gravel bike adventures. The Force 1 Type 2.1 Rear Derailleur brings up the rear of this group, facilitating precise gear changes to successfully navigate even the most undulating terrain.

SRAM dropped a heap of technology into this little derailleur to create a pleasant riding experience. Roller Bearing Clutch is a fancy way of saying this deralleur is a whip at stabilizing the chain over even the bumpiest terrain. It eliminates pesky derailleur bounce and chain slap for a noise-free, solid ride that won't chip your frame. X-Horizon boosts this stability by limiting movement to the horizontal axis, with its large upper pulley design maintaining a constant chain gap across the cassette. This effectively reduces shift initiation force and eliminates pesky ghost shifting, so you'll drop into the right gear with minimal effort the second you want it.

We all know that cyclocross comes with its share of mechanicals, and no mechanical interrupts the trip from start to finish more than a flat tire. To alleviate this, the SRAM Force 1 Type 2.1 Rear Derailleur makes wheel swaps a breeze with Cage Lock functionality. Just push the derailleur forward and it locks into place for quick and easy rear wheel removal or installation to get out of the pit and back on the course in a snap.

Last but by far not least, SRAM tossed in its Exact Actuation technology. Exact Actuation addresses the issue of different gear changes requiring different amounts of cable pull, which leads to loud cassettes and inefficient shifting. With Exact Actuation, each gear shift requires the same amount of cable pull, resulting in a predictable click and shift no matter where the chain sits in the cassette. This also means an overall quieter, better adjusted drivetrain for predictable shifting in any situation.

The SRAM Force 1 Type 2.1 Rear Derailleur is compatible with 10- and 11-speed Exact Actuation shifters. The short cage version supports a cassette range from 11-26t through 11-28t, the medium cage version supports a cassette range from 11-26t through 11-36t, and the long cage version supports a cassette range from 11-32t through 10-42t.

  • Use for 'cross, gravel, road cycling
  • Compatible with 10- and 11-speed Exact Acutation Shifters
  • Medium cage version supports 11-26t through 11-36t cassette ranges
  • Long cage version supports 11-32t through 10-42t cassette ranges

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Unanswered Question

Can replacement cable anchor bolts be obtained for this derailuer through your website?

What is a front derailleur?

  • Familiarity: I've put it through the wringer

I have been riding SRAM 1x drivetrain for years on the mountain side, but was a bit worried about dropping my front derailleur on the road side.

I decided to give the 1x a shot on my Niner RLT because of the simplicity and weight reduction. Also, with a trip from Banff, CA to Whitefish, MT on the Divide Route, I was worried about the problematic issues of chain suck and other issues caused by a front derailleur.

The Force 1x group did not let me down. Crisp precise shifting with not a single issue on the whole trip. I used a 38t up front and a 10/42t rear.

The climbing gear only let me down on the Whitefish Divide climb, which I was able to ride clean, but with a heavily loaded bike packing set up, a big bail out gear would have been appreciated. I think I would like to at least have a 46t in the rear for future trips that include a load of climbing.

What is a front derailleur?

1x All the Way

  • Familiarity: I've put it through the wringer

I set up my multisurface road bike with a long-cage Force 1 derailleur, a 10/42 tooth XX1 Cassette, and a 38-tooth chainring. With that gearing, I can claw up some very nasty and loose dirt climbs, but still have gears for leisurely riding on pavement. The only thing I have sacrificed is the ability to mash a big gear on paved descents to get my speed above 40 mph, but I can live with 38! the Force 1 drivetrain is smoother and quieter than any drivetrain I've ridden, including top offerings from Japan. The Front derailleur is unlikely to go extinct, but for a lot of road riding, a 1x11 drivetrain is a fantastic choice.

Never Going Back to 2x

  • Familiarity: I've put it through the wringer

I converted my old cyclocross bike from 10spd to 11spd with the Force rear derailleur and Rival shifters. Not only did I shave weight it shifts much better and performed great in the mud.

One is not such a lonely number

  • Familiarity: I've put it through the wringer

The use of 1x set ups has become common place on the MTB side and I am not sure I could imagine going back to the use of a front derailleur for my mountain bike. The simplicity, weight reduction and decrease in mechanical issues due to bad front shifts, makes for a no brainer, but I was more skeptical to go shed my double ring for road and gravel duty.

I set up my Niner RLT with Force 1x this season, with the expressed purpose of bike packing, specifically a trip from Banff, CA to Whitefish, MT.

I went with a 38t ring up front and a 11/42t cassette rear. This gear set up worked pretty well, but on some steep climbs, I had to really give her all I had, or it was going to be time to walk. Keep in mind, my bike packed up with panniers, gear, tent, water, and bags had to weigh around 60lbs. I have to say, I will be glad when Eagle 12speed makes it way over to the road side.

But, if you take all of the bike packing gear and equipment, the gearing would be more than sufficient for a standard road or gravel set up.

Force 1x is easy to use, simple and extremely reliable.

One is not such a lonely number
Unanswered Question

I have some original Sram Force shifters and was wondering if they would work with this derailleur?

Great for a winter rig

  • Familiarity: I've used it several times

SRAM Force 1 derailleurs are great for a 1 by build, the precision and chain retention is second to none. I have built bikes up with similar configurations, this derailleur has been the best I have used. It was great that it can be set up as a 10 or 11 speed since I could use some older 10 speed Force shifters with this. For winter riding in Colorado on dirt or gravel roads, the chain retension this derailleur provides is key as snow or mud can cause dropped chains. I am using the medium cage with a 11-34 cassette, feel it gives me plenty of options.

Avg. ride time: 7h 14m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

what does 2.1 mean?

It's just the version of their clutch mechanism. They had a few complaints about their 2.0 clutch, so they quickly released an updated 2.1 version. I have an X9 rear mech with a 2.1 clutch and it works great. I absolutely LOVE the cage lock system when removing and reinstalling the rear wheel.

2.1 is the clutch version that came after version 2.0. The 'Eagle' mountain bike derailleurs are using version 3.0.