Marzocchi Bomber Z2

The Marzocchi Bomber Z2

The Z2 was the short-travel sister of the Z1 in the first Bomber range. Marzocchi announced it in 1996 ahead of Eurobike, and the parts lists start with model year 1997: the Z2 Bomber with 30 mm stanchions, 65 mm travel and coil springs. The Z2 name ran until 2002 with the Atom Race.

This page covers the classic Z2 of 1997–2002 only. The Marzocchi Bomber Z2 sold since 2018 is a Fox-era trail fork with 34 mm stanchions and a different damper — most “Bomber Z2 service” videos on YouTube are about that fork, not this one.

Z2 models by year

From the Marzocchi parts lists and technical documents in our archive (seal chart where no parts list exists):

Year	Models	Travel	Stanchion
1997	Z2 Bomber	65 mm	30 mm
1998	Z2 Bomber; chart also lists Alloy, Atom Bomb, BAM, Light	65 mm	30 mm
1999	Z2 Alloy, Z2 Atom Bomb, Z2 BAM, Z2 X-Fly, Z2 SuperFly	65 mm (Alloy, Atom Bomb, SuperFly), 80 mm (BAM)	30 mm
2000	Z2 Atom, Z2 X-Fly (also with QR20 axle)	80 mm	30 mm
2001	Z2 Atom Race, Z2 Atom Sport (Air / Spring)	–	30 mm
2002	Z2 Atom Race	80 / 100 mm	30 mm

QR and QR20 are axle options, not separate models.

Which seal kit fits my Z2?

• 1997–1999 (Z2 Bomber, Alloy, Atom Bomb, BAM, Light, SuperFly): 30 mm classic — Seal Kit – 30mm classic (DZ-SK-30C). The 1999 Alloy, Atom and BAM are confirmed by both the parts list and the seal chart; 1997–1998 come from the chart.
• 2000–2001 (Atom, X-Fly, Atom Race, Atom Sport): the parts lists confirm 30 mm but do not show whether the seal is the classic or the m-arch type. Compare your old seal or ask us with a photo.
• 2002 Z2 Atom Race: 30 mm m-arch — Seal Kit – 30mm m-arch (DZ-SK-30M).

Service notes from Marzocchi documents

All classic Bombers run SAE 7.5 fork oil. Unlike most forks, the early Z2 takes a different amount in each leg:

• 1997 Z2 Bomber: right leg 75 cc, left leg 85 cc (EBH 16 / SAE 7.5); oil level 50 mm below the top of the stanchion, fork fully compressed.
• 1999 Z2 Atom Bomb: 75 / 85 cc; Z2 BAM: 90 / 100 cc; Z2 Alloy: 80 / 90 cc.
• 2000 Z2 Atom 80: 90 / 100 cc, level 40 mm.
• 2000 Z2 X-Fly 80: 60 cc per leg plus 7 cc lubrication oil.
• 2001 Z2 Atom Race: level 30 mm.

Drawing, parts list and manuals

The exploded drawing and the parts list below are for the 1999 Z2 BAM. The documents section holds the 1997–2002 Z2 parts lists, technical documents and instruction manuals; all of them are also in the fork documentation library. In the years above, the Z2 takes the same 30 mm seal kit as the Bomber Z1 of the same year.