ZERO
Zero is a family of mono-tube shock absorbers with one or two ways of adjustment —
upgrades that can also be applied to the basic nonadjustable.
ALL PERFORMANCE. NO HASSLE.
You want the best but you’re not convinced you need external adjustment. Perhaps the rules say you have to use a non-adjustable damper. Then you want Zero: The gas-pressurized monotube shock absorber built according to your exact requirements.
DON’T JUDGE A BOOK BY ITS COVER.
Zero has no external adjustment—but that doesn’t mean it’s not adjustable. Open one up and you’ll find a replaceable bleed jet and a pair of shim stacks—all of which can be tuned to deliver the performance you’re looking for.
FAMILY RESEMBLANCE.
Zero shares all of its essential components with One.Zero and Two.Zero. Bodies and bottoms? Check. Low friction shaft seals? Sure. One-piece piston ring? Yes. A choice of linear and digressive pistons? Of course.
ROUTINE MAINTENANCE
With proper care and maintenance, your Quantum shocks should prove exceptionally durable. Service intervals are difficult to predict as environmental conditions can vary wildly.
Shock absorbers subjected to road dirt and grime and those near the exhaust will require more regular servicing than those protected from the elements on top of the pedal box.
HOW IT WORKS
The inside of the shock absorber can be divided into three chambers: the compression chamber , the rebound chamber and the gas chamber.
The piston separates the compression and rebound chambers. These contain oil. The gas chamber contains nitrogen.
This is kept separate from the oil behind the floating piston. At rest, the pressure inside all of the chambers is equal.
All the time the shock absorber is fully extended this will be consistent with the recommended gas pressure.
When the shock absorber is caused to move, the piston moves through the oil. In doing so, oil must flow through the piston.
The restriction of the valves will cause a pressure differential either side of the piston. In compression, pressure inside the rebound chamber will decrease. In extension, pressure inside the rebound chamber will increase. At all times the pressure inside the compression chamber will remain consistent with that inside the gas chamber.
COMPRESSION
Negative pressure inside the rebound chamber causes oil to flow through the bleed jet. The diameter of the jet causes a restriction.
The jet is of fixed diameter and cannot be adjusted externally.
Oil flows through the jet and into the rebound chamber via cross-drillings in the shaft.
REBOUND
Positive pressure inside the rebound chamber causes oil to flow through the bleed jet. The diameter of the jet causes a restriction.
The jet is fixed diameter and cannot be Quantum Zero owner’s manual | 15 adjusted externally.
Oil flows through cross-drillings in the shaft and into the compression chamber via the jet.
LOW-SPEED EFFECT
No Compromise
Quantum Zero is a range of monotube shock absorbers. No matter which vehicle or how many ways of adjustment, every Zero shock absorber shares the same basic architecture and many of the same components.
Gas Pressurized
Zero shock absorbers are gas pressurized. The gas and oil are kept separate using a floating piston. This ensures consistent performance with the shock absorber in any orientation.
Infinitely Adjustable
Zero shock absorbers are available with up to two ways of external damping adjustment—and all can be opened by a competent individual and re-valved or re-jetted internally.
Throwing Shapes
A range of pistons allow the shape of the damping curve to be easily tuned. Linear. Digressive. Find your winning formula.
REQUEST A QUOTE
2.25″ ID 4″ Free Length (101mm) Standard Spring
Metric coiling size 58.5mm ID to clear.
All standard stock round section material springs are powder coated polyester gloss Black (RAL 9005)
| Zero | One.Zero | Two.Zero | |
|---|---|---|---|
| Price | From £292.00 ea.excl. VAT | From £413.00 ea.excl. VAT | From £667.00 ea.excl. VAT |
Standard specification includes ∅15mm rod ends, coil-over hardware, aluminium bodies, linear piston and purple anodizing. Top-hat spacers and springs are not included. Deviations from the standard specification are priced accordingly. | Standard specification includes ∅15mm rod ends, coil-over hardware, aluminium bodies, linear piston and purple anodizing. Top-hat spacers and springs are not included. Deviations from the standard specification are priced accordingly. | Standard specification includes ∅15mm rod ends, coil-over hardware, aluminium bodies, linear piston and purple anodizing. Top-hat spacers and springs are not included. Deviations from the standard specification are priced accordingly. | |
| Construction | Aluminium monotube Also available with steel body. | ||
| Gas-pressurized | Yes | ||
| External adjustment | No | One-way Low-speed bleed. | Two-way Low-speed bleed, independently adjustable in compression and rebound. |
| Internal adjustment | Low-speed
High-speed Piston | High-speed
Piston | High-speed
Piston |
| Caliber | 1.625″ | ||
| Revalvable | Yes | ||
| Servicable | Yes | ||
| Spring | ∅2″ minimum. ∅2.25″ standard. Sold separately. | ||
want to know more?
If you want to see what separates Quantum Zero shock absorbers from the competition on the inside, the comprehensive owner’s manual explains in detail how they operate, how to interpret dyno charts and offers practical advise on routine care and adjustment.