HOW TO: SET UP A SHOCK FOR SAG
Fitting a new shock is only half the job, the linkages need servicing, static and loaded sag need setting
Alan’s CRM gets the treatment
Anew shock absorber affords the perfect opportunity for a little back-end remedial work as well as some suspension set-up. Our 1989 Honda CRM250’S shock finally gave up whatever little life was left in it on the Taffy Dakar at the start of the summer (PS July 2018). Talking to our friends at Nitron, they had no fitment listed for the CRM but were keen to get one on their books. We sent them the old shock for some points of reference. A few weeks later and a pristine new unit turned up. It’s the popular entry-level Nitron NTR R1 with a 40mm
piston and preload and combined damping adjustment, tailored for the CRM and me. We’ve got these in a couple of the PS fleet now and they always deliver the goods. When fitting a new shock it’s a good time to clean up linkages and set the rear static sag; the difference in height between the bike loaded, at rest, and fully unloaded.
Our shock was already out and the bike has been sat on a stand for a month or more. If you’re starting from scratch you’ll need to get the bike off the floor, either with a stand under the engine or an Abba stand that bears on the swingarm pivot. And bit of wood under the rear tyre is useful too.
About the only thing that’s not red on Alan’s silly too-red bike