Marzocchi Bomber 58 setup
Most Bomber 58s leave the shop set for someone else. Put in your weight for your starting numbers, straight from Marzocchi’s own charts.
Pump to 69 psi, then measure sag and adjust.
Compression, spacers and limits
- Compression: 4 clicks out from fully closed (clockwise). It has 8 clicks in all, and 8 out is fully open.
- Rebound: Turn the dial fully clockwise until it stops, then count the clicks back out.
- Volume spacers at 203 mm: ships with 4, max 7.
- Max pressure 120 psi.
- Source: Marzocchi Bomber 58 tuning guide (ridefox.com)
Fix what you feel
Tap what your fork does. Fixes are for your GRIP. Change one thing at a time, then ride the same section again.
Harsh over roots and braking bumps
Too much air, too much compression, or rebound too slow.
- Check sag first. Under 15% means too much air.
- Open compression 1 or 2 clicks (counter-clockwise).
Dives under braking and on steep roll-ins
Not enough compression, or too much sag.
- Add compression 1 or 2 clicks (clockwise).
- Still diving and sag is past 20%? Add 3 to 5 psi.
Bottoms out hard on drops and big landings
The air spring isn’t ramping up enough.
- Add one volume spacer.
- Stay within Marzocchi’s max of 7 spacers. More can damage the fork.
Never uses full travel, even on big hits
Too many spacers, too much air, or too much compression.
- If sag is right, remove one volume spacer.
- Open compression 1 or 2 clicks.
Bouncy, or clunks at full extension
Rebound is too fast.
- Add rebound 1 or 2 clicks (clockwise).
Rides lower and lower through rough sections
Rebound is too slow, so the fork packs down.
- Open rebound 2 clicks (counter-clockwise).
Tell Suspend how it felt and it gives you the exact click to change on your Marzocchi Bomber 58. Free for your first bike.
Full Marzocchi Bomber 58 reference
For the air-sprung Bomber 58 with the GRIP damper, 203 mm, from 2017. Marzocchi’s 58 chart is the same in its 2017 tuning guide and its 2021 owner’s guide. A coil or older 58 is not covered.
Marzocchi Bomber 58 air pressure chart
| lb | kg | psi |
|---|---|---|
| under 130 | under 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 |
psi. Source: Marzocchi Bomber 58 tuning guide (ridefox.com).
Marzocchi Bomber 58 rebound clicks by weight
| lb | GRIP |
|---|---|
| under 130 | 13 |
| 130–140 | 12 |
| 140–150 | 11 |
| 150–160 | 10 |
| 160–170 | 9 |
| 170–180 | 8 |
| 180–190 | 7 |
| 190–200 | 6 |
| 200–210 | 5 |
| 210–220 | 4 |
| 220–230 | 3 |
| 230–240 | 2 |
| 240–250 | 1 |
Turn the dial fully clockwise until it stops, then count the clicks back out. Push the fork down hard and let go. If it clunks at full extension, rebound is too fast.
Marzocchi Bomber 58 sag in millimetres
| Travel | 15% (firm) | 20% (plush) |
|---|---|---|
| 203 mm | 30 mm | 41 mm |
Measure with the compression adjusters fully open, dressed to ride, weight spread across saddle, bars and pedals.
Marzocchi Bomber 58 compression settings
| Damper | Start at |
|---|---|
| GRIP | 4 clicks out from fully closed (clockwise). It has 8 clicks in all, and 8 out is fully open. |
Marzocchi Bomber 58 volume spacers
| Travel | Ships with | Max |
|---|---|---|
| 203 mm | 4 | 7 |
Spacers change how hard the fork ramps up at the end of its travel, not its sag. Add one if you bottom out too easily, remove one if you never get near full travel. Marzocchi’s max is 7. More can damage the fork.
Which Marzocchi Bomber 58 damper do I have?
- GRIP: Two indexed dials, one for compression and one for rebound. Both click.
Every Bomber 58 has the GRIP damper.
Marzocchi Bomber 58 service interval
Marzocchi recommends a full service every 125 hours of riding or once a year, whichever comes first.
Questions
What air pressure should I run in my Marzocchi Bomber 58?
Start from Marzocchi’s chart for your riding weight with gear. A 170–180 lb rider starts at 69 psi. Then set sag to 15–20%. Never go over 120 psi.
How much sag should a Bomber 58 have?
15–20% of travel: 30–41 mm on the 203 mm fork. Measure with the compression dial fully open (counter-clockwise), dressed to ride, with your weight spread across saddle, bars and pedals.
How many clicks of rebound on a Bomber 58?
It depends on your weight. From fully closed, a 170–180 lb rider starts at 8 clicks out. Lighter riders run more clicks out: 13 at 120–130 lb, down to 1 at 240–250 lb. Compression starts 4 clicks out.
Does this work for my older Bomber 58?
For the air 58 from 2017 on, yes, Marzocchi’s numbers are the same in its older and newer guides. Anything older than that needs the guide for its own year on marzocchi.com.
Related guides
Sources · last checked 2026-10-09
Starting points from the manufacturer’s charts, not a substitute for your fork’s manual. Always confirm with a sag measurement and stay under the max pressure.