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It is worth considering other parameters that may be influencing the performance of the fork, especially if you find yourself very 
far from the base settings. Change your settings in steps, only adjust one setting at a time, and only open or close the one setting 
by a few clicks at a time. If you find yourself lost in the settings, reset to the base settings and start over again.  

 

Base settings – Idylle RaRe FCV 

Rebound: 

Recreational use: 20 clicks 
Racing use: 19 clicks 

 
Low-speed compression:  
 

Recreational use: 15 clicks 

 

Racing use: 11 clicks 

 
High-speed compression:  
 

Recreational use: 20 clicks 

 

Racing use: 16 clicks 

 
 
 
 
 
 
 
 
 
 
 
 

3.1

 

Air purge 

The Idylle RaRe FCV is equipped with an air purge screw on the top of  each stanchion. Purging the air regularly reduces the 
effect of the air pressure that is invariably created in the fork during use. It is recommended to purge the air every 5 rides in 
racing  use  and  every  10  rides  in  recreational  use.  To  purge  residual  air,  remove  the  screw  entirely  and  replace  the  screw  – 
tighten till snug, do not compress the fork.  

 
 

3.2

 

Service 

 

It is essential to clean your fork after each day of riding without waiting. Nothing is worse for the life of your seals than dirt and 
dust. The cleaning process is also extremely simple: clean the stanchions and seals with a clean rag. You can occasionally lubricate 
the exterior of the seal with fork oil. The following chart shows the minimum service intervals for your fork. If you ride mostly in 
wet and muddy conditions, please follow the “racing use” service intervals. 
Warning: Do not under any circumstances use degreaser. 
On  the  same  note,  do  not  power  wash  the  forks!  It  will  only  push  the  mud  inside  the  forks  and  get  it  stuck  between  the 
stanchion and the seals. 
 
 

Cleaning 

Air purge 

Oil change 

Complete service 

Recreational use 

Each ride 

Every 10 runs 

Annually 

Every 2 years 

Racing use 

Each ride 

Every 5 runs 

Twice per year 

Annually 

 
 
 

 

 

3. Maintenance

11

 

Caution : 

Oil changes and service should be performed at an official BOS service center. These are the only locations able to 
identify and resolve damaged or worn parts on your product, especially in the case of extreme shocks or premature wear 
on structural elements such as the lowers, stanchions, or crowns.

 

Summary of Contents for Idylle FCV

Page 1: ...User Manual ...

Page 2: ...uential resulting from the use of its products local legislation prevailing Warranty exclusions This warranty does not cover the following cases Damage to products resulting from improper assembly other than listed below Products that have been modified by the owner or a third party Improper use Damages resulting from an accident or a crash under any circumstances Invalid servicing procedures and ...

Page 3: ...ollowing measurements to set your lower crown height This height is measured from the top of the fork leg the bottom of the visible part of the dust seal to the bottom of the lower crown 27 5 wheel model forks 217mm CAUTION This measurement match with a maximum of 705mm tire diameter The distance between the top of the upper crown and the top of the stanchion must be between 0mm and 30mm B Once yo...

Page 4: ... should be done on the fork before riding is to set the air pressure This adjusts the stiffness of the air spring according to your weight The stiffness of the air spring induces a degree of fork travel when you sit on your bike This value commonly called sag can vary based on your usage This value should be between 30mm smooth terrain climbs and 50mm rough terrain downhills The sag measurement sh...

Page 5: ...e air spring pressure the position of the fork in the crowns and the geometry of the bike This is not to mention personal rider preference That being said we can offer the following general advice Fork diving excessively on braking harden low speed compression Frequent bottom out harden high speed compression Feeling of harshness on roots and rocks soften high speed compression Discomfort arms get...

Page 6: ...en till snug do not compress the fork 3 2 Service It is essential to clean your fork after each day of riding without waiting Nothing is worse for the life of your seals than dirt and dust The cleaning process is also extremely simple clean the stanchions and seals with a clean rag You can occasionally lubricate the exterior of the seal with fork oil The following chart shows the minimum service i...

Page 7: ...he stanchion and the top of the oil with a clean ruler Oil Heights IDYLLE Rare FCV Hydraulic side right 140 mm Air side left 20 ml 140mm Important It is strongly recommended to use BOS Bi oil Changing the type of oil risks changing the fork s performance and reducing the life of wear parts Caution To correctly set the oil height on the hydraulic side of your fork purge the cartridge as you are add...

Page 8: ...at our recommended base settings given in the setup section of your product s user manual If you ve equalized your fork you may have some internal pressure from the production process You can eliminate this pressure by slipping a thin ziptie between your left dust seal and your stanchion until you hear the sound of air escaping Then reset your pressure and equalize your air chambers If you ve trie...

Page 9: ...recommended service intervals cannot cover 100 of customer s usage cases Use in wet muddy conditions storage out in the sun frequent use or improper care can all cause your seals to wear out more quickly Where can I find my serial number The serial number is engraved under the steer tube it s composed of 7 numbers How can I adjust my FCV The FCV is a very precise internal system who is preset in o...

Page 10: ...Date Location Air pressure Psi HS Compression LS Compression Rebond Remarks 4 impasse Léonce Couture F31200 Toulouse tel 33 0 534 25 33 66 fax 33 0 534 25 33 60 5 Notes ...

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