KTM LC4 620/640 625 SXC Shock
The LC4 retains a linkage system, unlike the PDS rear shock on most other KTM models. It has proven to be very reliable, but needs some attention for safari type events. There is also an option of removing some of the travel limiting spacers for increased ride height.
We have found the stock WP rear shock springs loose their free length over time, and you will need to keep readjusting the sag. Because of this, and a need to raise the rate, we replace the stock 63Nm WP spring with a heavier 20-075 Series Shock Spring.
The valving also comes under attention, with a new setting for safari. Plush at the beginning, firm enough to carry the load, but firming up towards the end of the stroke. We use high quality oil with good resistance to heat related fade, Maxima medium.