DT SWISS R535 Mountain Shock User Manual

: June 12, 2024
: DT SWISS

Table of Contents

GENERAL INFORMATION
SAFETY
ASSEMBLY
SETUP
MAINTENANCE AND CARE
DISPOSAL AND ENVIRONMENTAL PROTECTION
WARRANTY (EUROPE)
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

DT SWISS R535 Mountain Shock User Manual

A: individual serial number
B: shock model
C: length / stroke
D: shock mount
E: damping technology
F: actuation
G: spring technology
H: factory tuning
I: color
J: product range
Congratulations on the purchase of your new DT Swiss shock! You have purchased a quality product made by DT Swiss.

GENERAL INFORMATION

This user manual is intended for the user of the shock. It includes information on the assembly,
adjustment, maintenance and care of the shock, along with the provisions of the warranty.
For further information and activities refer to www.dtswiss.com.
Users must have read and understood the manual before use. Third-party users must also be informed about the following provisions. Keep this user manual handy / for reference in case you need to refer to it later.

SAFETY

DANGER

Incorrect handling, as well as incorrect or lack of maintenance or servicing, can lead to accidents causing severe injuries or death!

Compliance with the following provisions is a prerequisite for accident-free use and faultless performance.
Assembly and maintenance of the shock requires a basic knowledge of handling bicycle components. If in doubt, contact your dealer.
The shock should be used only in accordance with its intended use. Otherwise the user shall assume responsibility.
The shock must be compatible with all parts of the bicycle.
Maintenance and repair of the shock must only be carried out by a trained specialist.
Only use original DT Swiss accessories and spare parts.
The shock must not be changed or modified.
The shock must not be used if it is damaged or there are any signs of damage. If in doubt, contact your dealer.

DANGER
Incorrect assembly of the shock can lead to accidents causing severe injuries or death!

The installation length of the shock must be approved by the manufacturer of the frame.
Only use fastening screws specified by the frame manufacturer.
Observe the tightening torque specifications of the frame manufacturer.
Only use mounting hardware specified by the frame manufacturer.
Check that the shock can move freely after installing.
No part of the shock may come into contact with the frame, aside from the connection points. Ensure that all moving parts can move freely.

INTENDED USE AND MAXIMUM SYSTEM WEIGHT
This shock is intended for use as rear wheel suspension and shock absorption on a bicycle. The maximum system weight (rider, bicycle, equipment and luggage) may not exceed 150 kg / 330 lbs. Do not exceed the shock’s maximum air pressure of 333 psi.

ASSEMBLY

DU BUSHINGS

sleeve
DU pin
DU bushing
shock eye

The DU bushing (3) is already mounted on this shock. The mounting hardware (DU-Pin (2) and sleeve (1)) suitable for your bicycle frame is available separately. Consult the manufacturer of your bicycle frame for the correct dimensions of the hardware. For instructions on installing the mounting hardware, refer to the Technical Manual for this shock at www.dtswiss.com.
There are no restrictions on the mounting position for this type.

MOUNTING THE SHOCK

Install the shock in accordance with the specifications of the bicycle or frame manufacturer.
- Observe the specifications of the bicycle or frame manufacturer when setting the tightening torque of the fastening screws.
  If using shocks with trunnion mount, do not exceed a tightening torque of 20 Nm (see image).
Check to ensure the rear shock is installed correctly. To do this, release some air (see Sec. 4.4 on page 15) and compress the shock completely in the frame.
- No part of the shock may come into contact with the frame, aside from the connection points.
- Ensure that all moving parts can move freely.
Increase the air pressure to the desired pressure (see Sec. 4.3 on page 15).

SETUP

SETTING THE SAG
The SAG (negative spring deflection) is the degree by which the shock compresses under the weight of the rider. For a firmer ride quality (cross country), a lower SAG (20% to 25% of the shock stroke) should be selected. For the best possible downhill performance, a higher SAG (25% to 35% of the shock stroke) should be selected.

shock length / stroke [mm] Graphs
20565 / 2306
20560 / 23060
18555 / 21055
18550 / 21050
16545 / 19045
16540 / 19040
Mountain Shock
SAG [mm]

Set the shock to “OPEN” mode and push the O-ring onto the wiper.
With full cycling equipment (helmet, backpack, shoes, etc.), sit on the bicycle.
Assume the normal position.
- Only strain the shock with the weight of the rider and equipment.
- Avoid sudden load impacts.
Get off the bicycle and measure the distance between the SAG O-ring and the wiper seal.
- This dimension is referred to as SAG.
- The SAG should be between 20% and 35% of the shock stroke and varies depending on use and riding style (see image, top).
Adjust the air pressure if necessary. Repeat the steps above until you reach the required SAG.

ADJUSTING THE AIR PRESSURE

The values recommended here are merely a guideline. The air pressure should be adjusted in accordance with the rider’s personal preferences and via the correct SAG.

Rider weight[kg / lbs]| Pressure[bar / psi]| Rider weight[kg / lbs]| Pressure[bar / psi]| Rider weight[kg / lbs]| Pressure[bar / psi]
---|---|---|---|---|---
40 / 88| 9.9 / 143| 65 / 143| 14.6 / 211| 90 / 198| 19.3 / 279
45 / 99| 10.8 / 157| 70 / 154| 15.5 / 225| 95 / 210| 20.2 / 293
50 / 110| 11.8 / 171| 75 / 165| 16.5 / 239| 100 / 220| 21.1 / 307
55 / 121| 12.7 / 184| 80 / 176| 17.4 / 252| 105 / 232| 22.1 / 320
60 / 132| 13.6 / 198| 85 / 187| 18.3 / 266| 110 / 245| 23 / 330

Maximum pressure: 23 bar / 333 psi!
The values in the table are based on a mean lever ratio of 2.5 and can vary considerably due to the bicycle’s characteristics, riding style or personal preferences.

INCREASING THE AIR PRESSURE
To increase the air pressure, a shock pump with a maximum pressure of 23 bar is required, depending on the rider’s weight.

Set the shock to “OPEN” mode (see Sec. 4.5 on page 16).
Unscrew the valve cap on the shock.
Screw on the shock pump and pump the shock up to the required pressure.
- Note the instructions issued by the shock pump’s
  manufacturer!
Slowly compress the shock with the shock pump screwed on ten times by around 25% of its stroke.
- This equalizes the positive and negative air chambers.
- Once the pressure displayed on the shock pump stops changing after compression, the two air chambers have equalized.
Repeat the process until the desired pressure is displayed on the shock pump after compression.
Unscrew the shock pump and screw the valve cap onto the valve.

REDUCING THE AIR PRESSURE

Set the shock to “OPEN” mode (see Sec. 4.5 on page 16).
Unscrew the valve cap on the shock.
GRADUALLY press the valve insert with the back of the valve cap. or Screw on the shock pump and GRADUALLY reduce the air pressure by pressing the release valve on the shock pump.
- The shock can compress up to the point at which the equalization of the positive and negative air chambers occurs.

ADJUSTING THE COMPRESSION [R 535 ONE]

The compression damping regulates the compression speed of the shock and can be adjusted in three stages via the lever on the shock.

OPEN:
In “OPEN” mode, the compression of the shock is in the most sensitive, factory-set setting. The shock responds sensitively to small bumps in the terrain.

DRIVE:
If the lever on the shock is moved to the middle position, the compression damping is partially closed. This makes the bike much more firm and encourages effective pedalling in situations where the full performance of the shock is not required (uphill climbing on roads or easy trails, rides on level ground).

LOCK:
If the lever on the shock is moved to the “LOCK” position, the flow of oil at the shock piston is blocked. A blow off valve opens the flow of oil in the event of heavy impacts and therefore prevents damage to the shock.
ADJUSTING THE COMPRESSION
The shock is also available as a remote version. For information on mounting and adjusting the remote system, please visit www.dtswiss.com.

ADJUSTING THE COMPRESSION [R 535]
The compression damping regulates the compression speed of the shock and can be adjusted in two stages via the lever on the shock.

OPEN:
In “OPEN” mode, the compression of the shock is in the most sensitive, factory-set setting. The shock responds sensitively to small bumps in the terrain.

LOCK:
If the lever on the shock is moved to the “LOCK” position, the flow of oil at the shock piston is blocked. A blow off valve opens the flow of oil in the event of heavy impacts and therefore prevents damage to the shock.
The shock is also available as a remote version. For information on mounting and adjusting the remote system, please visit www.dtswiss.com

ADJUSTING THE REBOUND
The rebound damping regulates the rebound speed of the shock and can be set by rotating the red rebound wheel by around 40 clicks (shock with standard mount) or 22 clicks (shock with trunnion mount).

The rebound damping is increased in a clockwise direction.
The rebound damping is decreased in an counterclockwise direction.

ADJUSTING THE REBOUND
If the rebound damping is too low, the rear wheel will rebound too quickly. A rebound damping that is set too low will be felt through the frame bouncing up when riding. If the rebound damping is too high, the rear wheel can no longer follow rapid-succession impacts and the suspension hardens.

The aim of the rebound setting is to absorb the rebound movement as effectively as possible based on the demands of the terrain. On fast, rough descents, for example, a lower rebound damping (= faster rebound speed) should be selected than on smooth descents without any major obstacles.

MAINTENANCE AND CARE

Task	Interval
Service completed by a DT Swiss Service Center	Annually or after 200

operating hours
Small service (if necessary completed by a DT Swiss Service Center)See Technical Manual at www.dtswiss.com or scan the adjacent QR code| ****| 50 operating hours
Check the shock for damage| Before and after each ride
Check the fastening is correct / check tightening torques| Before each ride
Check the functionality| Before each ride
Clean with a soft sponge and a suitable cleaning agent, especially in the area around the wipers Do not use high pressure cleaners or aggressive cleaning agents!| After each ride

DISPOSAL AND ENVIRONMENTAL PROTECTION

The statutory regulations shall apply. Whenever possible, avoid creating waste. Waste, especially carbon, lubricants, cleaners and any other fluids must be disposed in an environmentally compatible manner.