Specialized Stumpjumper FSR, User Manual, Page: 6 / 28

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WARNING! Failure to follow the seatpost and frame minimum insertion requirements may result in
damage to the frame and/or seatpost, which could cause you to lose control and fall.
If the seatpost is cut short, the min/max mark on the seatpost may no longer be accurate. Before
cutting the seatpost, note the min/max depth required by the seatpost manufacturer.
WARNING! Inspect the seatpost and seat tube to ensure that there are no burrs or sharp edges.
Remove any burrs or sharp edges using fine grit sandpaper.
Do not apply grease to the contact surfaces between the seatpost and the seat tube. Grease
reduces the friction, which is critical to proper seatpost grip. Specialized recommends the
application of carbon assembly compound (fiber paste), which can increase friction between
carbon surfaces. Please visit your Specialized Authorized Retailer for additional information.
2.3. BOTTOM BRACKET
Stumpjumper FSR models have a threaded 73mm width bottom bracket shell and is compatible with any BSA threaded
outboard bearing bottom bracket. Please refer to the crank manufacturer documentation for bottom bracket compatibility.
CAUTION (CARBON FRAME): Do not face the bottom bracket shell! Chasing the threads is
acceptable if necessary.
2.4. REAR AXLE
Stumpjumper FSR models are equipped with 148mm Boost rear hub spacing and require a 148mm Boost compatible
rear wheel.
2.5. CHAINGUIDE
Certain models are equipped with a custom chainguide which attaches to the two ISCG tabs. The chainguide can be
rotated upward to allow the chain to come on and off the chainring. There are two guide brackets available (28-32t
and 28-36t).
Setting the chainguide position:
„
With the chainguide section rotated up, place the bracket in position, then lightly tighten the two ISCG bolts.
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Rotate the chainguide down and align the chain imprint on the guide with where the chain would be.
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With the chain in the lowest (largest) gear and approximately 50% sag (let some air out of the shock), inspect
the clearance between the chainguide and the chain. If at this point there is contact between the chainguide and
the chain, rotate the bracket forward until there is no longer any contact.
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Tighten the two bolts to 55 in-lbf (6.2 Nm).
CAUTION (CARBON FRAME): Do not use bolts that engage in the frame more than 7 threads
(7mm).
2.6. FLIP CHIP
All models are assembled with the Flip Chip in the Low position. Switching to the High position
raises the bottom bracket height by approximately 5-6mm and steepens the head tube angle by
approximately 0.5 degrees.
Place a rag between the link and the seat tube to make sure the link doesn’t make contact with the
seat tube.
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Remove the upper shock eye bolt and the two extension bolts, then remove the extension/shock assembly from
the bike.
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Remove the lower shock eye bolt, then remove the Flip Chip halves out of the lower shock eye.
„
Rotate the two Flip Chips 180 degrees then push them back into the lower shock eye.
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Assemble the rear shock eye to the extension and install the bolt (do not torque at this time).
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Install then torque to specification the upper shock eye bolt and the two extension bolts.
„
Torque the lower shock eye bolt to specification.