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c. Adjusting the Coil Shock Preload.
(1) A coil-sprung shock’s preload is adjusted by rotating the knurled preload nut that compresses the coil.
By gripping the spring as in (fig. 30) and rotating, you can usually perform the adjustment. To begin,
loosen the preload completely until the coil is loose. Then, tighten one turn or until the coil is no
longer loose. We will call this the “adjustment starting position.”
(2) Measure the sag.
(3) To increase the sag from the adjustment starting position, it is recommended that a lighter spring be
purchased and fitted for proper function. To increase the preload, rotate the spring/nut clockwise. K2
recommends no more than five spring/nut rotations beyond the adjustment starting position to
achieve the target sag. If more that five rotations are required, it is recommended that a heavier spring
be purchased and fitted for proper function.
d. Adjusting the Air Shock Preload. Adjusting the preload for an air-sprung shock unit requires a high-
pressure shock pump fitted with a Schraeder-type valve adaptor (fig 31). Sag will vary by the amount of
air pressure in the air spring chamber. Higher Pressure = Higher Preload = Less Sag. Lower Pressure
= Lower Preload = More Sag. Again, by trial and error, add or decrease the pressure in the air spring
to reach the 25% sag target.
2. Wheel Travel Adjustment. The K2 Lithium offers two travel options, with one inch
of range. The two travel options will match up to the most popular suspension fork
offerings for a truly balanced ride. Position A, as in (fig. 34), will give you 5” of rear
wheel travel. The other position provides 4” of rear wheel travel, as indicated by the
laser etched markings on the linkage plates. The geometry of the Lithium is virtually
unchanged from one travel option to the other, so no further adjustments need be
made to maintain the preferred action and feel of the bike.
Fig34