WHEN ZERO MEANS EVERYTHING
ZEROGUIDELINE
Zero is the name of Mondraker’s proprietary suspension system and is used on all of its full suspension bikes. The advantage that
this suspension system provides is evident in all MTB riding from XC with 100mm travel to 200mm travel downhill bikes, covering
all categories in between like Trail, All Mountain and Enduro. The Zero suspension system has been optimized and adapted for
every use or category and differentiates itself clearly from other suspension systems.
The Zero suspension system is used in the suspension frames of Lithium 100mm, Factor 29er 110mm, Tracker 120mm, Foxy 140mm,
Dune 160mm and the Summum at 200mm travel.
DESCRIPTION
The Zero System belongs to the category that we call “Virtual Pivot” suspension system. These systems have their own particular
mechanical configuration by means of two rotating plates that connect the rear triangle with the front triangle. The most significant
difference of the Zero system is that the rear shock is floating between two plates and is compressed from both ends.
Depending on the optimization of the system and based on its usage, the lower plate compresses the rear shock an average of
about 35% of its total length and the upper plate approximately 65%. The positioning of the rear shock together with the compression
that the shock receives from both sides makes this system unique.
CHARACTERISTICS
There are four key points that make the Zero Suspension system so incredibly effective:
• Zero power loss. Pedalling and suspension forces are perfectly balanced and it prevents any unwanted movements produced
whilst pedalling, resulting in maximum efficiency without extra compression or extension of the rear suspension.
• Zero pedal kickback. Chain length growth throughout the suspension travel is insignificant avoiding any backward movement of
the crank set that could lead to poor pedalling efficiency or cadence.
• Zero brake jack. The brake forces do not alter the suspension system. The rear shock will absorb impacts without changing its
function whilst using the rear brake.
• Zero bumps. The main characteristic of the system is its excellent absorption capacity with at the same time a high pedalling
efficiency. The optimized trajectory of the rear axe and the linear nature of the rear shock assure very effective impact absorption.
ADVANTAGES
Thanks to the configuration of the system and the cinematic features, our Zero system gives clear advantages compared to other
existing systems you can find in the market. These advantages are very much perceived when you ride a bike with zero suspension,
which allows the rider to perform significantly better.
• High absorption for any kind of impacts. The perception you feel using this system or bike is the feeling as if you were using a
rear shock with a larger travel. The developed progression of the system together with the high initial Sag percentage makes the
Zero a high quality suspension system.
• More initial sensibility thanks to the positioning of the rear shock that compresses itself significantly from both sides. This mechanical
configuration gives the rear shock more reaction capacity for all impacts it suffers and allows the wheels to take more easily all
the obstacles it comes across on the track.
• Amazing pedalling effectiveness. The system features a total balance of the forces induced by pedalling with the optimized Sag
position, which ensures that all the power transmitted to the pedals is converted into speed.
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WHEN ZERO MEANS EVERYTHING
ZEROGUIDELINE
ADJUSTMENT
The Zero system does not need any special adjustments different then other existing Systems. However it is essential to apply the
right minimum Sag value especially knowing that the Sag values for the Zero system are higher than the average values of other
existing systems.
The Zero system has been completely optimized for specific minimum Sag values that we need to respect in order to achieve the
optimized functioning of the suspension system. With these values we assure the highest possible absorption capacity and the best
pedalling efficiency. Other systems tend to pedal better with a low Sag percentage but this is not the case with Zero system. The
most efficient position for pedalling can be found right at the recommended minimum sag value.
Thanks to the cinematic configuration of the system, the percentage of the Sag is higher than the average value of other systems,
which is exactly the key point that determines the excellence of the Zero system. The minimum recommended values are:
CATEGORY
MODEL
Downhill
RECOMMENDED SAG
RECOMMENDED SAG IN MM
Summum
40%
30mm
Enduro
Dune
35%
22mm
All Mountain
Foxy
30%
17mm
Trail
Factor
25%
13mm
Trail 29er
Factor 29er
25%
13mm
XC
Lithium
20%
8mm
What does Sag mean? Sag means the proportion of the rear shock that gets compressed once we sit on the bike. The proportion
is directly related to our body weight and in concordance with this we need to adjust this proportion by adding or taking out air
of the main rear-shock’s air chamber.
How can you measure the Sag? This can be measured by using the rubber ring that is placed around the piston of the rear shock.
When we talk about a 35% Sag we refer to a 35% subsidence over the entire travel, taking as a reference the actual piston of the rear
shock. For instance our Model Dune with rear shock Fox Float has a piston with a 63.5mm travel. Applying a 35% Sag of 63.5mm
would be 22mm. These 22mm would be the distance that you would need to achieve between the rubber ring and the body of the
rear shock, once we are sitting on the bike.
For a correct balance of suspensions and to achieve a perfect geometry, we should set the front fork SAG to similar values as those
used in the rear shock.
MAINTENANCE
There is no difference at all in terms of maintenance of this system compared to other existing multi plate systems. All pivots, two
in every plate which makes 4 in total, turn by means of long-lasting sealed bearings which you will only have to replace in case the
bearings are worn out or if any of its components crack.
Any how for safety reasons we recommend a previous inspection before usage of the bike, of all turning screws that comprehend
the system. Furthermore we would recommend to dismount, clean and lubricate the full system at least once a year to avoid
possible abrasion or the start of play.
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