Marzocchi Bomber M-Arch Casting O-Ring Set (for 3-Part-Castings with 30mm Stanchions)

9,00  VAT included

This product is about a set (2 pcs) Marzocchi Standard O-Rings (new), known as part no. (?) in the exploded drawings, used in Bombers with 3-Parts-Castings type M-Arch – introduced in 2000 – without a single brace!  

Have been used in some X-Fly’s, Z1 Free Ride FR 2002, 2002 Atom Bomb and other Bombers with 30mm Stanchions as decsribed.

Available on back-order

Bulk deal
Quantity Discount Discounted price
2 - 3 10% 8,10 
4 + 15% 7,65 
SKU: Marzocchi Bomber O-Ring 3-Part-Casting Categories: , , , , , , , Tags: , ,

Frequently Bought Together

Bomber O-Ring M-Arch 3-Part-Casting
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Marzocchi Bomber 30mm Seal Kit M-Arch
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++Marzocchi Bomber Slider Protector 30mm+
Spare Parts Set with blue Knobs
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Price for all:   156,89 

This is about a set = 4 O-Rings (2 in each side). 

The relevant Marzocchi Fork like the 2000 X-Fly consists out of 4 parts :

  • left slider
  • right slider
  • fork crown with integrated brace
  • 2 cantilever bolts (which holds the parts together in the correct position!)
  • 4 O-Rings (2 each side)

The cantilever bolts are the constructive detail to fit all together. If you take them out, you carefully can turn the slider out of the for crown. One O-Ring is inside the crown and needs to be places there (oil it!) before the slider will be pushed in, the other one is between the slider and the crown.
Be arefull : sometimes people have already went the ‘short way’ and have glued it together, so use some heating to be able to separate the forks parts nicely! 

Please check Manuals yourself : – unfortunately the O-Rings will not shown in the manuals, but you can check the crown design related to 2000 X-Fly.

Seals Assembling
When mounting the Oil Seals put crease between the inner lips of the seals before pushing the stanchions in!
Important : Use a suitable tool to press the Oil Seal verticaly in!! If you don’t do that, the metal skeleton will bend.

Seals ‘Break-in Period’
“Some forks may require 5-10 hours of use before the fork fully breaks-in. After the bushings, seals, and other parts have matched to each other, the fork will move smoother. The tight tolerances make the fork last longer and work better.” (original text from Marzocchi Bomber Technical Information (2000) )

Knob / Dial Installation Instructions
Please glue the little screw of the dials with a little bit of middle hard screw glue. And use heat if you want to take it off than.

Sticker Instructions
Please use the sticker only in conditions >=20°C environment to make sure the glue will work and make the tubes oil- and grease-free using isopropanol etc.

[20220114] Ebay Bewertung erhalten von Dario De Santis, Italien
Product sold : Marzocchi Bomber’s REBUILD-KIT ‘COMPLETE’ for Z1 (BAM) & Z2 (BAM) 30mm ‘classic’
“Venditore preciso e affidabile al 100% Tutto perfetto anche con piccolo regalo ?? Consigliatissimo!”

[20210911] Siro from Trieste, Italy  – Fork : Marzocchi Z3 1997
Product sold : 30mm Bomber ‘classic’ Seal kit
“Buongiorno, i pezzi per la bicicletta sono arrivati e le caramelle per me anche!!!
Buone le caramelle e anche i paraolio e para polvere, fantastici!!
Voi sapere quanto olio devo mettere dentro alle forcelle? (Marzocchi Z3 del 97)
Grazie. Un saluto da Trieste.”

[20210903] Ralf from Nürnberg, Germany – Fork : Marzocchi Z3
Product sold : Full Fork Service Z3

“Hallo Marcus, 
die Gabel ist angekommen und ich bin begeistert! Vielen Dank auch für die zusätzlichen Dichtringe und die Gummibärchen!!!
Wie kann ich die Dämpfung etwas weicher einstellen und welche Funktion haben eigentlich die Einstellschrauben jeweils auf den Standrohren?
Beste Grüße, 

Not sure about your Forks Seal size and Type???

Check my personal Marzocchi FORK <-> SEALS Database!! 

Dimensions of Marzocchi Steerer

ZollSteerer mm (top)Steerer mm (bottom)
1 "25,400 mmca. 27,20 mm
1 1/8 "28,575 mmca. 30,15 mm
1 1/4 "31,750 mmca. 33,00 mm

You will receive your goods from us fast! After receipt of payment, you can expect packaging, shipping delivery of your parcel ASAP. 
All sendings will be sent tracked! 
Shipping takes usual 1-3 days in GER using DHL, but might take longer in EU and world wide (Hermes / DHL). 
Stickers will be send by ‘Deutsche Post international registered letter’. 

Please allow 7-14 days for rebuilding depending on work load. Sometimes I need more time depending on current family needs 😏

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