Checking The Basic Setting Of The Fork - KTM 450 SX-F Owner's Manual

10 TUNING THE CHASSIS
10.11

Checking the basic setting of the fork

Info
For various reasons, no exact riding sag can be determined for the forks.
Main work
–
Choose and mount a suitable spring.
Guideline
Spring rate (SX‑F EU)
Weight of rider: 65... 75 kg (143...
165 lb.)
Weight of rider: 75... 85 kg (165...
187 lb.)
Weight of rider: 85... 95 kg (187...
B00292-10
209 lb.)
Spring rate (SX‑F USA)
Weight of rider: 65... 75 kg (143...
165 lb.)
Weight of rider: 75... 85 kg (165...
187 lb.)
Weight of rider: 85... 95 kg (187...
209 lb.)
Spring rate (SX‑F Factory Edition)
Weight of rider: 65... 75 kg (143...
165 lb.)
Weight of rider: 75... 85 kg (165...
187 lb.)
Weight of rider: 85... 95 kg (187...
209 lb.)
Spring rate (XC‑F)
Weight of rider: 65... 75 kg (143...
165 lb.)
Weight of rider: 75... 85 kg (165...
187 lb.)
Weight of rider: 85... 95 kg (187...
209 lb.)
Info
The spring rate is shown on the outside of the spring.
Finishing work
–
Install the shock absorber.
–
Install the manifold.
–
Check the static sag of the shock absorber. (
–
Check the riding sag of the shock absorber. (
–
Adjust the rebound damping of the shock absorber. (
–
Remove the motorcycle from the lift stand. (
–
As with the shock absorber, smaller differences in the rider's weight can be com-
pensated by the spring preload.
–
However, if the fork is often overloaded (hard end stop on compression), harder
springs must be fit to avoid damage to the fork and frame.
401000-01
54 N/mm (308 lb/in)
57 N/mm (325 lb/in)
60 N/mm (343 lb/in)
54 N/mm (308 lb/in)
57 N/mm (325 lb/in)
60 N/mm (343 lb/in)
54 N/mm (308 lb/in)
57 N/mm (325 lb/in)
60 N/mm (343 lb/in)
54 N/mm (308 lb/in)
57 N/mm (325 lb/in)
60 N/mm (343 lb/in)
( p. 46)
x
x
p. 30)
p. 30)
p. 36)
32
p. 29)