1 ISOSPEED SEAT DECOUPLER AND SEAT MAST
How it works
High position
As the adjustable seat mast slider is
moved up the seat mast, you will feel
the road surface and be more subject
road vibration.
Low position
The ride will be more comfortable
as the adjustable seatmast slider is
moved down the seat mast. You will
be more isolated from any vibration
caused by the road surface.
The IsoSpeed seat decoupler allows the seat mast to flex
independently (decoupled) from the seat tube and top
tube. The IsoSpeed decoupler provides saddle comfort over
rough pavement, while the frame maintains stiffness for
quick acceleration and increased pedaling efficiency.
The new adjustable seat mast slider changes the amount
of flex provided by the seat decoupler for a truly tuned ride.
K Rear IsoSpeed cover drive side
L Pivot bolt
M Bearing 19mm x 10mm x 5mm
N Pivot locating washer
O Rear IsoSpeed cover non drive side
P Nut m5 x .08 x 24mm
Q Flat washer m5 x 10 x 1.0mm
R Button head screw m5 x 10
S Curved washer m5 x 18od x 1.5thck x r11
T Spring lock washer
U Cap screw m5 x .08 - 35
BB Adjustable seatmast bumper
CC IsoSpeed seat mast pivot axle
DD Seat mast
EE Adjustable seatmast slider
TOOLS AND MATERIALS REQUIRED:
• 4 mm Hex wrench
• 5 mm Hex Wrench
• 6 mm Hex Wrench
• Torque wrench
• Grease
• Loctite 242
K
L
L
M
M
N
N
O
P
Q
S
T
U
BB
CC
DD
EE
(Parts enlarged for clarity)
3
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