Specialized AFR E100, AFR S120 Installation, Preparing The Components, Pre-Installing The Fork

INSTALLATION

E100/S90/S120 forks with carbon steerer tubes are specifically designed for the Epic, Era, Safire and Stumpjumper carbon OEM frames with a 1 1/2” (52mm) lower bearing and a 1 1/8” (42mm) upper bearing. Each steerer tube is already cut to fit the specific frame size it was paired with.

In the event that the steerer tube needs to be cut down further or any maintenance needs to be done to the fork, please read the following instructions. If you have any doubt regarding your mechanical ability and/or installation of this product, visit your Specialized Authorized Dealer. Specialized recommends that the stem be installed on the fork using a torque wrench, with the service performed by a qualified mechanic.

Recommended torques in this guide are specific for this Specialized product. Consult the owners manual for the mating component’s recommended torque. Always use the lower torque recommendation.

PREPARING THE COMPONENTS

Inspect the fork and stem to ensure that there are no burrs or sharp edges that can damage the surface in contact with each other. Remove any burrs or sharp edges using fine grit sandpaper. All edges in contact with the steerer tube should be rounded out to eliminate any stress points.

Burrs and sharp edges can damage the carbon and alloy surfaces of the components. Any deep scratches or gouges in the stem or fork can weaken the components resulting in failure, causing serious personal injury or death.

NOTE: Specialized recommends only external slotted clamp style stems. Internal wedge clamp style stems can damage the steerer tube if improperly installed (Fig. 1).

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PRE-INSTALLING THE FORK

1.The lower bearing race is permanently pre-installed at the factory. Apply a small amount of grease to the lower bearing race surface. Avoid getting grease on the stem interface region of the steerer tube.

2.Install the bearings in the head tube, with a light coat of grease on the bearing surfaces. The bearings are friction fit and can be installed by hand.

3.Place the fork in the frame, followed by the headset compression ring, headset top cap and the desired height of carbon cone and/or headset spacers.

NOTE: Do not install more than 40mm (1.5”) stack height of headset spacers. Exceeding this limit can compromise the strength of the steerer tube (Fig. 2).

NOTE: Clean the stem interface surface of the steerer tube (above the headset spacers) with isopropyl alcohol or a similar type of degreaser before installing the stem.

4.Pre-install the stem (do not apply a high torque without the 48mm Long Expander Plug installed).

NOTE: Unless the desired stem height is already determined, it is recommended that the pre-installation of the fork and stem be done with the maximum allowed stack height (40mm) to allow the greatest range of adjustability. Spacers can be placed above or below the stem

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