They love it!

★★★★★

2 Reviews

FSA

FSA Stem OS-99 CSI Carbon Gray

★★★★★

- 2 Reviews

Please select

Stem length

Out of stock

Delivery from wednesday

€168.35

100

Delivered from 03/12

€143.99

110

Out of stock

120

Delivered from 29/11

€139.99

130

Delivered from 29/11

€139.99

Non available

We will contact you by e-mail when this item is back in stock.

I also want to receive other offers by e-mail

€168.35

RRP €180.00 ⁽¹⁵⁾

	Serenity Pack	Comfort Pack
Express delivery
Bike assembled 100%⁽¹⁾
Fast-track access to our experts	1 year	3 months
Free marking	~~€19.99~~	~~€19.99~~
Bike maintenance at Alltricks stores	3 "gold" maintenances ⁽²⁾ ~~€285~~	1 "bronze" maintenance ⁽³⁾ ~~€50~~
Additional labor (2h) ⁽²⁾	~~€138~~

(1) Bike fully assembled, checked, and adjusted by our expert mechanics. To reduce the environmental impact of transport, we have removed the front wheel and pedals from your bike. The box used is therefore lighter and less bulky. All you have to do is reassemble them and enjoy your new bike. We recommend adjusting the saddle height, tire pressure, and suspensions according to your preferences.

(2) Within 2 years of bike purchase.

(3) Within 3 months of bike purchase. The services are valid only in one of our Alltricks stores. Details of the available maintenance services can be found at: www.alltricks.fr/surl/l-atelier

Delivery from wednesday

In stock

€168.35

Sold by Ride & Go

4/5

(497)

€143.99

RRP €180.00 ⁽¹⁵⁾

	Serenity Pack	Comfort Pack
Express delivery
Bike assembled 100%⁽¹⁾
Fast-track access to our experts	1 year	3 months
Free marking	~~€19.99~~	~~€19.99~~
Bike maintenance at Alltricks stores	3 "gold" maintenances ⁽²⁾ ~~€285~~	1 "bronze" maintenance ⁽³⁾ ~~€50~~
Additional labor (2h) ⁽²⁾	~~€138~~

(2) Within 2 years of bike purchase.

(3) Within 3 months of bike purchase. The services are valid only in one of our Alltricks stores. Details of the available maintenance services can be found at: www.alltricks.fr/surl/l-atelier

Delivered from 03/12

Last one in stock!

€143.99

Sold by Alltricks

Non available

We will contact you by e-mail when this item is back in stock.

I also want to receive other offers by e-mail

€139.99

RRP €180.00 ⁽¹⁵⁾

	Serenity Pack	Comfort Pack
Express delivery
Bike assembled 100%⁽¹⁾
Fast-track access to our experts	1 year	3 months
Free marking	~~€19.99~~	~~€19.99~~
Bike maintenance at Alltricks stores	3 "gold" maintenances ⁽²⁾ ~~€285~~	1 "bronze" maintenance ⁽³⁾ ~~€50~~
Additional labor (2h) ⁽²⁾	~~€138~~

(2) Within 2 years of bike purchase.

(3) Within 3 months of bike purchase. The services are valid only in one of our Alltricks stores. Details of the available maintenance services can be found at: www.alltricks.fr/surl/l-atelier

Delivered from 29/11

Last one in stock!

€139.99

Sold by Alltricks

€139.99

RRP €180.80 ⁽¹⁵⁾

Including 0.14€ eco-participation

	Serenity Pack	Comfort Pack
Express delivery
Bike assembled 100%⁽¹⁾
Fast-track access to our experts	1 year	3 months
Free marking	~~€19.99~~	~~€19.99~~
Bike maintenance at Alltricks stores	3 "gold" maintenances ⁽²⁾ ~~€285~~	1 "bronze" maintenance ⁽³⁾ ~~€50~~
Additional labor (2h) ⁽²⁾	~~€138~~

(2) Within 2 years of bike purchase.

(3) Within 3 months of bike purchase. The services are valid only in one of our Alltricks stores. Details of the available maintenance services can be found at: www.alltricks.fr/surl/l-atelier

Delivered from 29/11

Last one in stock!

€139.99

Sold by Alltricks

Become Premium !

1 year benefits for 9.99€

For only 9.99€, enjoy 1 year of benefits:

Unlimited free 24-hour express delivery

Cashback discounts on thousands of products

100 days returns policy

Exclusive benefits

More about Alltricks Premium

The Premium subscription is not automatically renewed, no payment is required at the end of the 1 year period.

Become Premium !

1 year benefits for 9.99€

For only 9.99€, enjoy 1 year of benefits:

Unlimited free 24-hour express delivery

Cashback discounts on thousands of products

100 days returns policy

Exclusive benefits

More about Alltricks Premium

The Premium subscription is not automatically renewed, no payment is required at the end of the 1 year period.

Become Premium !

1 year benefits for 9.99€

For only 9.99€, enjoy 1 year of benefits:

Unlimited free 24-hour express delivery

Cashback discounts on thousands of products

100 days returns policy

Exclusive benefits

More about Alltricks Premium

The Premium subscription is not automatically renewed, no payment is required at the end of the 1 year period.

Become Premium !

€2.80 cashback for the purchase of this product

For only 9.99€, enjoy 1 year of benefits:

Unlimited free 24-hour express delivery

Cashback discounts on thousands of products

100 days returns policy

Exclusive benefits

More about Alltricks Premium

The Premium subscription is not automatically renewed, no payment is required at the end of the 1 year period.

Description

The K-Force OS-99 CSI stem is 3-D forged and CNC machined from AL2014. Then it’s combined with a carbon structure using our CSI (Carbon Structural Integration) technology. CSI is a process that permanently bonds carbon to alloy to create a true hybrid product, with many of the benefits of aluminum and carbon. The final details reduce the OS-99 stems weight by using a 4-bolt sculpted AL2014 alloy/carbon faceplate and titanium hardware.