FSA - OS-99 Carbon Stem

SKU: 8798

€20,95 EUR

€30,95 EUR

SAVE 32 %

Out of stock

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Free shipping available if you spend above €163,95 EUR.

Collection: ProOwned Approved®

Condition: Brand new

Description

FSA makes carbon fiber stems, but the OS-99 is arguably its greatest stem (despite not being the most exotic or expensive). Unbelievably, the OS-99, the lightest stem in the FSA series, is constructed from 7050 aluminium alloy.

The OS-99 is produced by FSA utilizing a unique 3D forging method that uses low forging rates and very high pressures to completely remove surface distortion. To achieve optimal crystal formation, the heat treatment process is meticulously controlled. As the heat treatment is so important to the final product, FSA records and examines each heat treatment session to guarantee quality. Although it could be really light, it is robust and durable.

Both alloy and carbon fiber handlebars can be fixed securely to the forged face-plate, which includes a serrated grip area. Even the washers and counterbores for the Ti bolts have been designed to improve stress flow, removing any potential stress risers. To more evenly distribute the clamping stress across the steerer tube, the clamping region is also sliced diagonally.

Specifications:

3D forged and CNC machined from AL7050
Made with Carbon structure integration technology
Features Titanium bolts
Has alloy and carbon faceplate with serrated grip surface
Has 31.9 mm clamp diameter
1 1/8in steerer tube diameter
+/- 6 degree rise
Length is 70 mm

FSA makes carbon fiber stems, but the OS-99 is arguably its greatest stem (despite not being the most exotic or expensive). Unbelievably, the OS-99, the lightest stem in the FSA series, is constructed from 7050 aluminium alloy.

The OS-99 is produced by FSA utilizing a unique 3D forging method that uses low forging rates and very high pressures to completely remove surface distortion. To achieve optimal crystal formation, the heat treatment process is meticulously controlled. As the heat treatment is so important to the final product, FSA records and examines each heat treatment session to guarantee quality. Although it could be really light, it is robust and durable.

Both alloy and carbon fiber handlebars can be fixed securely to the forged face-plate, which includes a serrated grip area. Even the washers and counterbores for the Ti bolts have been designed to improve stress flow, removing any potential stress risers. To more evenly distribute the clamping stress across the steerer tube, the clamping region is also sliced diagonally.

Specifications:

3D forged and CNC machined from AL7050
Made with Carbon structure integration technology
Features Titanium bolts
Has alloy and carbon faceplate with serrated grip surface
Has 31.9 mm clamp diameter
1 1/8in steerer tube diameter
+/- 6 degree rise
Length is 70 mm

Introduction

We have sorted all our products into four general categories:

- ProOwned® Approved
- Pro's Choice
- Fan's Choice
- Essentials

We have done this to make it easier for you to know what type of item you are shopping for.

ProOwned® Approved
An authentic and original product sourced directly from a cycling team or rider and can be in different conditions — brand new, as new or pre-owned. We make sure to quality check all items and ensure that you always receive a product in good condition.

Pro's Choice
High-end and top-quality products sourced from carefully selected brands & partners. These products are often a model or type that is preferred to use in professional cycling.

Fan's Choice
Products made for cycling fans. Team merchandise consisting of clothing, accessories and gift products supporting your favourite team.

Essentials
The products you can not live without on your ride. This category is made to cover your basic needs on a bike ride and preparations. Our goal is to provide you with value for money no matter what you are shopping for.

Introduction
Our ProOwned® Approved products are original from professional cycling teams and cyclists. On each of these products, we inform the item's condition, along with photos showing the signs of use.

Most of the products are brand new, and we always make sure to offer products in good functional condition. The items that cannot be sold are donated to charity.

If you doubt the product's condition or packaging, please feel free to contact us.

Brand new
The item has not been used yet. The item can be both with and without original packaging, as the item may have been part of a cycling team's preparations.

As new
The item has been unpacked, tested, washed once or has marks from storage. However, this item has never been used on a bike ride.

Pre-owned
A professional cyclist has used the item but has plenty of miles left. The item will always be checked for defects, and you will receive it clean and in functional condition.