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How to measure and set your SAG? 

 

Don’t forget that the SAG must be measured on flat ground, while in driving conditions, the 
bike is on the slope, which reduces the "dynamic SAG" (in action). 
 

Disengage the bump stop from the shock foot thanks to a flat screwdriver and slide the 
bump stop until the contact with the rod guide.  

 
Be carfull to not damage the shaft! 
 

Sit on your bike (if possible dressed with your riding outfit) feet on the pedals - horizontal position, 
and let the suspension compress under your weight.  

 

Get off the bike without pushing on the 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 your spring according 
to  your  bike  and  your  weight,  please  refer  to  the  "Chart  list"  available  on  our  website  www.bos-
suspension.com.

 

 
To convert the distance into percentage, refer to the table below: 
 

Total stroke 

(mm) 

60 

63 

65 

68 

75 

89 

SAG (%) 

30 

35 

30 

35 

30 

35 

30 

35 

30 

35 

30 

35 

Negative travel 

(mm) 

18 

21 

19 

22 

20 

23 

20 

23 

23 

27 

27 

31 

 

SPRING ADJUSTMENT  

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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