Marzocchi Bomber 58 Guida rapida
TUNING GUIDE
2
Suggested Sag Measurements
Travel 15% sag (Firm) 20% sag (Plush)
203 mm (8in) 30 mm (1.2in) 41 mm (1.6in)
SAG SETTING
To achieve the best performance from your Marzocchi
suspension, adjust the air pressure to attain your proper
sag setting. Sag is the amount your suspension compresses
under your weight and riding gear. Sag range should be set
to 15–20% of total fork travel.
Make sure to set sag with the LSC adjuster in the full
counter-clockwise (OPEN) position, see page 5.
O-RING
DUST WIPER
SAG RANGE
TOTAL FORK TRAVEL
Your fork has a 4 digit ID code on the back of the lower
leg. Use this number at www.Marzocchi.com to find out
more information about your fork.
3
SAG RANGE
Suggested Starting Points for Setting Sag
Rider Weight (lbs) Rider Weight (kgs) BOMBER 58
Pressure (psi)
120-130 54-59 49
130-140 59-64 53
140-150 64-68 57
150-160 68-73 61
160-170 73-77 65
170-180 77-82 69
180-190 82-86 73
190-200 86-91 76
200-210 91-95 80
210-220 95-100 84
220-230 100-104 88
230-240 104-109 92
240-250 109-113 96
Do not exceed maximum air pressure:
BOMBER 58 maximum air pressure is 120 psi.
The recommended settings in this tuning guide are designed
to be a starting point, in order to get you out on your first ride
in as few steps as possible. Consult your bike manufacturer’s
instructions for setup recommendations.
As you ride and get used to your new fork, adjust your settings as needed.
Detailed information and videos can be found in the online owner’s manual.
4
REBOUND ADJUSTMENT
The rebound adjustment is dependent on the air pressure setting. For example,
higher air pressures require lower rebound settings. Use your air pressure to find
your rebound setting.
Turn your rebound knob to the closed position (full clockwise) until it stops. Then
back it out (counter-clockwise) to the number of clicks shown in the table below.
LEAST AMOUNT OF
REBOUND DAMPING,
FORK REBOUNDS
FASTEST
MOST AMOUNT OF
REBOUND DAMPING,
FORK REBOUNDS
SLOWEST
CLOSED
(CLOCKWISE)
OPEN
(COUNTER-CLOCKWISE)
9 8 7 6 5 4 3 2 1
REBOUND
Rebound controls the rate
of speed at which the fork
extends after compressing.
Rider Weight (lbs) Rider Weight (kgs) BOMBER 58
120-130 54-59 13
130-140 59-64 12
140-150 64-68 11
150-160 68-73 10
160-170 73-77 9
170-180 77-82 8
180-190 82-86 7
190-200 86-91 6
200-210 91-95 5
210-220 95-100 4
220-230 100-104 3
230-240 104-109 2
240-250 109-113 1
REBOUND
KNOB
5
GRIP COMPRESSION ADJUSTER
Use this diagram as a starting point for your compression adjuster.
Turn your compression adjuster to the closed position (full clockwise) until it stop.
Then back it out (counter-clockwise) to the number of clicks shown below.
LOW-SPEED COMPRESSION (LSC)
CLOSED
(FULL CLOCKWISE)
OPEN
8 CLICKS 4
CLICKS
OUT
LEAST AMOUNT
OF COMPRESSION
DAMPING; FORK
COMPRESSION
LIGHTEST
MOST AMOUNT
OF COMPRESSION
DAMPING; FORK
COMPRESSION
FIRMEST
Low-speed compression
adjustment is useful to control
fork performance during rider
weight shifts, G-outs, and other
slow inputs.
6
SEE ADDITIONAL INFORMATION AND VIDEOS:
MARZOCCHI.COM
INSTALL THE FRONT WHEEL
1. Install the front wheel into the dropouts and slide the axle through the
dropouts and hub.
2. Using a 5mm hex wrench, torque the axle to 2.15 Nm (19 in-lb).
3. Torque the two pinch bolts on the rider’s left dropout to 2.15 Nm (19 in-lb).
4. Compress the fork a couple of times to let the right side of the dropout float
and settle to its low-friction point.
5. Torque the two pinch bolts on the rider’s right dropout to 2.15 Nm (19 in-lb).
WARNING: Failure to secure the axle properly can cause the wheel to become detached from the bicycle,
resulting in SERIOUS INJURY OR DEATH.
7
ADDITIONAL TUNING OPTIONS
CLIP-ON VOLUME SPACERS
Changing volume spacers in the BOMBER 58 fork is an easy internal adjustment
that allows you to change the amount of mid stroke and bottom out resistance.
If you have set your sag correctly and are using full travel (bottoming out) too
easily, then you could install one or more spacers to increase bottom out resistance.
If you have set your sag correctly and are not using full travel, then you could
remove one or more spacers to decrease bottom out resistance.
Installation procedure and tuning options are available online at:
www.Marzocchi.com
BOMBER 58 Volume Spacer
Configurations
Travel Volume Spacers
Factory Installed
*Max Volume
Spacers
203 4 7
*Do not exceed the Max Volume Spacers
number, as this can damage your fork.
FORK TRAVEL
FORK AIR SPRING FORCE
MAXIMUM SPACERS
(LEAST AIR VOLUME)
FACTORY SETTING
(STOCK AIR VOLUME)
MINIMUM SPACERS
(MOST AIR VOLUME)
TYPICAL AIR SPRING CURVES
FULL COMPRESSION
FULL EXTENSION
8
NOTES
©MARZOCCHI. 2017 // 1.800.369.7469
915 Disc Drive, Scotts Valley, CA 95066 USA
605-00-174 REV A
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