BOS Idylle SC, User Manual

2.1. Spring

Before giving your forks their first spin, please do check that you are using the right spring rate.

With your forks (providing that it is not an original equipment) come extra springs in order to adjust to most of the 

riders. By default, your forks come with the orange spring within.

The table below is for own use, please refer to it.

less than 45 kg

45 to 60 kg

60 to 80 kg

80 to110 kg

green

red

yellow

purple

option

supplied

with the fork

supplied

in the fork

supplied

with the fork

Spring Preload

The sag on your forks shouldn’t exceed 25 to 45 mm (15% to 25% of the travel) therefore it is very important not to 

preload the forks more than what‘s necessary. The sag has to be considered in dynamic situations (going down the 

hill for instance) not static situations before preloading the spring, and it allows to raise the chassis at its right height.

Use a 14mm spanner to preload the spring (left stanchion, disc brake side) turning clockwise. 

Do not preload further than 20 clicks.  Otherwise, it’s better to change for a softer -or harder- spring.

Spring swap & preload

It’s an easy operation.

1. After having unscrewed the triple crown, undo the top cap on the top of the stanchion.

2. Remove the preloader (3) to adjust the number of spacers required (2).

3. If you wanna replace the spring (4), remove the preloader and the spacers, to get acces to it.

Caution : 

slightly grease the O-ring of the cap prior to mount it back.

1

3

2

4

2. REGLAGES