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This section details the installation of your BOS SYORS. 
 
First of all, remove the original suspension from your bike. To do this, please refer you to the original manual 
of your bike.  

 
To facilitate reassembly, locate the order of disassembly of parts and arrange them on 
your worktop so as to quickly identify the location of each of them during reassembly. 
 

 

Never try to disassemble your shock. Limit yourself to the instructions given in this manual. This 
shock is pressurized, for your own safety, do not try to open it. You also risk damaging the shock 
and its internal mechanisms as well as voiding your warranty. 
Contact an authorized service center for any maintenance operation. 

  
Your SYORS shock is delivered with the correct mounting kits for the bike specified while ordering. 

 

Check the mounting direction 

 
By referring to the compatibility table, available on the BOS suspension website download page. 
www.bos-suspension.com 
 
 

 
 
SAG verification 

 

The SAG is the amount of travel used by your suspension from your weight on the bike. It is set by adjusting 
the spring preload. 
 

BOS recommends a SAG percentage of 25 to 35 % of total travel, depending on your use and your riding 
style. (Enduro 25-30% / DH 30-35%) 
 
The bike manufacturer may also indicate a SAG percentage. Please refer to your bike’s user manual for this 
value.  
If the manufacturer recommendation differs from ours, you should test the bike on the trail at different SAG 
values to find the right amount for your riding style. 
 
The BOS SYORS is supplied with a spring to match your weight. 
The  ideal  preload,  should  be  between  0-4mm.  If  you  exceed  4mm  then  a  harder  spring  is  strongly 
recommended. If you don’t get the sag, choose a softer spring. 
 

A  spring  which  is  too  hard  or  with  too  much  preload  can  negatively  affect  the  shock’s  hydraulic 
damping and reduce your bike’s performance. 

 

 
 

 

SPRING ADJUSTMENT  

 

ASSEMBLY 

Summary of Contents for SYORS

Page 1: ...UM_152017 001A_En_SYORS USER MANUAL SYORS ...

Page 2: ... of advanced research from our engineering office test bench and many hours spent with our professional riders Our goal is to provide you with the best technologies and the greatest outdoor experience In order to make the most of your new acquisition please read this user manual carefully The mounting instructions and tips for use contained on it will allow you to make the most out of your suspens...

Page 3: ...rable to subsequent owners Wear and tear parts such as dust seals O ring bushings rear shock mounting hardware shafts threaded parts and bolts are not covered by this warranty TERMS This limited warranty is subject to legal jurisdiction or warranty rights of the original purchase country which will prevail if different from the terms herein listed LIMITS This limited warranty is conditioned on the...

Page 4: ...NT 5 OIL SETTINGS 7 MAINTENANCE AND SERVICING 9 FAQ 9 SETTINGS HISTORY 10 SERVICING NOTES 11 You will need the following tools for settings and maintenance Tool Symbol 2 mm hexagonal wrench 4 mm hexagonal wrench 11 mm open end wrench Ruler By hand Flat screwdriver TOOLS SUMMARY 11 ...

Page 5: ...e compatibility table available on the BOS suspension website download page www bos suspension com SAG verification The SAG is the amount of travel used by your suspension from your weight on the bike It is set by adjusting the spring preload BOS recommends a SAG percentage of 25 to 35 of total travel depending on your use and your riding style Enduro 25 30 DH 30 35 The bike manufacturer may also ...

Page 6: ...suspension any more extend the rear suspension to its full travel by pulling up the saddle and measure the distance between the bump stop and the rod guide This distance allows you to check the percentage of SAG The SYORS shock absorber for exclusive use in downhill mountain bike requires different spring preload depending on the geometry of each bike on the market To know the exactly preload to y...

Page 7: ...ning the screw clockwise on rolling terrain with big compressions and kickers It might be useful to soften the low speed compression by turning the screw counter clockwise on steep gradients High speed compression 11 mm black nut on head The high speed compression acts mainly on harsh hits jump landings rough sections It should be soft enough to get all the travel without bottoming out If on a giv...

Page 8: ...ngs between too fast and too slow Then always choose a setting in the faster part of that range for example the three last clicks counter clockwise on a range of nine Platform lever option Optionally your SYORS shock can be equipped with a locking lever to reduce the hydraulic flow in the compression system This will be useful during the pedalling period to avoid the work of the shock under the ef...

Page 9: ...l valving spring weight You can find all the information about standard settings for your bike in the chartlist on the BOS website bos suspension com Where can I purchase original stickers You can purchase these items through your approved BOS center or on the BOS store on bos suspension com I noticed some play between my shock and the frame what can I do Check that your mounting hardware is torqu...

Page 10: ...10 Date Place Track conditions Comp Rebound Comments LS HS SETTINGS HISTORY ...

Page 11: ...______ _______________________________________________________________________________________ _______________________________________________________________________________________ _______________________________________________________________________________________ _______________________________________________________________________________________ _________________________________________...

Page 12: ...ON 4 IMPASSE LEONCE COUTURE 31200 TOULOUSE Tel 33 0 534253366 Fax 33 0 534253360 sales bos suspension com www bos suspension com Facebook Page Bos Suspension User manual for BOS Suspension Mountain Bike SYORS ref UM_152017 001A_En_SYORS ...

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