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FSA OS-99 Stem

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4.7 out of 5 (7 ratings)
6 customer reviews



  • Superlight near-net forged, CNC machined 7050 aluminum
  • All sharp edges have been radiused to eliminate stress concentrations
  • 6/4 titanium hardware (washers and counterbores are all radiused too)
  • 4-bolt alloy faceplate. 2-bolt diagonal cut steerer clamp.
  • 98g
Shipping Offers - $2.99 Pick-a-Product Shipping, and Free Shipping on orders over $150

80mm x 84/6 deg x 31.8 Clamp

Item #:21978-50212 
Mfg#:175-0298 
UPC:400310024237 
EAN:400310024237 
Other #s:
SM0746 
FS4050 
31077063 
ST32611 
Available to ship DETAILS
Oregon1 Today11 Monday
Minnesota0 Today 
New Mexico0 Today 
Utah0 Today 

pickup_biking_man Available for pickup DETAILS
Portland, OR1 Wednesday11 Monday
Ogden, UT0 Today2 Tuesday
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11 Thursday

$75.00

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90mm x 84/6 deg x 31.8 Clamp

Item #:21978-50213 
Mfg#:175-0299 
UPC:400310024244 
EAN:400310024244 
Other #s:
SM0747 
FS4051 
31077064 
ST32612 
Available to ship DETAILS
Oregon0 Today1 Monday
Minnesota0 Today 
New Mexico0 Today 
Utah0 Today 

pickup_biking_man Available for pickup DETAILS
Portland, OR0 Wednesday1 Monday
Ogden, UT0 Today1 Thursday

$75.00

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100mm x 84/6 deg x 31.8 Clamp

Item #:21978-50214 
Mfg#:175-0300 
UPC:400310024251 
EAN:4712147804248 
Other #s:
SM0748 
FS4052 
31077065 
ST32613 
Available to ship DETAILS
Oregon0 Today0 Monday
Minnesota0 Today 
New Mexico0 Today 
Utah0 Today 

pickup_biking_man Available for pickup DETAILS
Portland, OR0 Wednesday0 Monday
Ogden, UT0 Today0 Thursday

$75.00

Notify When In Stock


30 Second
Price Match

110mm x 84/6 deg x 31.8 Clamp

Item #:21978-50215 
Mfg#:175-0301 
UPC:400310024268 
EAN:400310024268 
Other #s:
SM0749 
FS4053 
31077066 
ST32614 
Available to ship DETAILS
Oregon0 Today0 Monday
Minnesota0 Today 
New Mexico0 Today 
Utah0 Today 

pickup_biking_man Available for pickup DETAILS
Portland, OR0 Wednesday0 Monday
Ogden, UT0 Today0 Thursday

$75.00

Notify When In Stock


30 Second
Price Match

120mm x 84/6 deg x 31.8 Clamp

Item #:21978-50216 
Mfg#:175-0302 
UPC:400310024275 
EAN:400310024275 
Other #s:
SM0750 
FS4054 
31077067 
ST32615 
Available to ship DETAILS
Oregon0 Today1 Monday
Minnesota0 Today 
New Mexico0 Today 
Utah0 Today 

pickup_biking_man Available for pickup DETAILS
Portland, OR0 Wednesday1 Monday
Ogden, UT0 Today1 Thursday

$75.00

Add to Cart


30 Second
Price Match


 





Customer Ratings

Current Customer Rating


4.7 out of 5 (7 ratings)

Rating Distribution





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Customer Reviews

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good solid stem

This is a good all around solid stem, nothing fancy, no frills, but a quality part. I bought this for my cross bike and liked it so much I replaced my old stem on my road bike with this one.

Pros: Clamps tightly

Would Buy Again: Yes
Would Recommend: Yes

Reviewed on: February 27, 2013
Reviewed by: Jason A., Connecticut

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Lightweight XC Stem

I installed this on my Epic S-Works. It was the lightest stem for the money. Anything lighter was carbon and expensive. Never had one fail or slip.

Pros: Lightweight and Affordable

Cons: None

Would Buy Again: Yes
Would Recommend: Yes

Reviewed on: August 17, 2011
Reviewed by: LT., California

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a great stem, really light and stiff too.

Pros: light, stiff and looks good

Cons: none

Would Buy Again: Yes
Would Recommend: Yes

Reviewed on: March 17, 2011
Reviewed by: Mike , Michigan

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Good stem, looks nice but is heavier than advertised. Titanium bolt are a plus. Is it better than other stems, probably not.

Would Buy Again: No
Would Recommend: No

Reviewed on: November 02, 2010
Reviewed by: Daniel M., Rhode Island

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Light weight and strong. My bars haven't slipped once with this stem.

Pros: Light weight

Cons: None

Would Buy Again: Yes
Would Recommend: Yes

Reviewed on: September 15, 2010
Reviewed by: Christopher M., California

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Among the lightest stems available

I've had this on my bike for the last 15k miles over 2 years. No problems with it. Has held my Zipp SL carbon bars well. Have used in both positions with no issue either.

80mm size weighed in at 104g.

Pros: Lightweight

Would Buy Again: Yes
Would Recommend: Yes

Reviewed on: September 01, 2010
Reviewed by: Francis (Team EARTHDREAMS), WA

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