ONE ZERO
The One.Zero belong to a family of mono-tube shock absorbers with excellent interchangeability of parts.
The most popular damper in club motorsport?
One.Zero is your easy-to-understand introduction to externally adjustable damping, trusted by amateur racing drivers across the broad spectrum of national motorsport.
One is all you need.
A single clicker adjuster provides quick and easy adjustment of low-speed damping. The solitary adjuster has 24 positions and effects bleed across the piston in compression and rebound.
Discretion assured.
If the clicker knob is too obtrusive for you—or if packaging is a concern—One.Zero is also available with a cool and compact sweep adjuster.
EXTERNAL ADJUSTMENT
Quantum One.Zero shock absorbers are externally adjustable.
Adjustment is made by turning a knurled collar—or clicker—on the top eye.
HOW IT WORKS
Type
Bleed adjuster
Affects
Bleed across the piston in both directions
Effective area:
1,185.7mm2
Number of clicks:
24±1
Full stiff:
Position 0, fully clockwise
COMPRESSION
Positive pressure inside the rebound chamber causes oil to flow through the bleed jet. A restriction occurs where the oil passes between the jet and the needle.
Oil flows through cross-drillings in the shaft. It is possible to adjust the restriction externally.
Turning the adjuster clockwise introduces the needle further into the jet, increasing the restriction.
REBOUND
Positive pressure inside the rebound chamber causes oil to flow through the bleed jet. A restriction occurs where the oil passes between the jet and the needle.
Oil flows through cross-drillings in the shaft. It is possible to adjust the restriction externally.
Turning the adjuster clockwise introduces the needle further into the jet, increasing the restriction.
LOW-SPEED EFFECT
Low-speed
adjustable
This means the rate at which damping force increases in kg/ mms2 between 0kg and the knee can be adjusted externally.
Bleed jet
The One.Zero has one bleed jet that affects both compression and rebound damping.
Needle and a jet adjuster
The jet has a hole with a fixed diameter. The needle is the same diameter as the hole at its base and tapers to a point at its tip.
Open area
The jet flows in one direction only.
GET 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.