Marzocchi’s sturdy air shock is well worth a look if you want a tight feeling shock.
This is a sturdy unit that ﬁrms up soft bikes nicely and can be serviced at home. However, it's stiff in stock form, on the heavy side and not great value. The range of available sizes is a bit limited too. If it's available in your bike's size, though, this is worth looking at should you need a sturdy, stiff-feeling shock for a bob-prone bike.
In contrast to Marzocchi’s generally succulent forks, The Roco Air 3PL exhibits a deﬁnite initial stubbornness over small bumps, and it takes a fair old wallop to get the oily tide mark right up to full travel, too.
On the plus side, it makes it a natural calming inﬂuence on bikes which bob or squat in drive/braking situations. Three levels of additional low-speed compression can be ﬂicked on via the 3PL lever, too. While it’s happily spike- or clang-free, a controlled mid-stroke means it never uses any more travel than it has to.
It feels stiff over smaller bumps, though, and at 368g (200mm version) it’s heavy for an air shock.
Marzocchi claims that this rear shock is easily serviceable at home if you’re a reasonable home mechanic, without the need to send it back to a main service centre or the manufacturer.