When commanded by the sensors, the shock will switch between two positions: Open and Firm-in as little as 1/70th of a second.

Live Valve Neo does not employ a third "Pedal" mode, which some riders may perceive as necessary when climbing technical trails, or pedalling through low angle technical sections. Live Valve Neo can switch between Open and Firm so fast that a middle ground setting is not necessary. You get full support of Firm mode exactly when you need it, and the plushness of Open mode exactly when you want it.

Please Note; Springs are sold separately.

Three elements work together to achieve Live Valve Neo's speed advantage:

Sensors only transmit the info they need to i.e. when the shock needs to open.
Neo communicates a command from the sensors to the controller in as little as one millisecond.
A 2-position magnetic latching solenoid opens or firms the shock's compression circuit significantly faster than a motor, while remaining virtually silent.

Achieving a faster overall response time is critical in Trail and Enduro riding, where transitions between trail sections can be abrupt. By defaulting to Firm mode even when descending riders gain every performance advantage for a faster overall ride, without sacrificing any comfort or control, no matter their ability level. Live Valve Neo harnesses efficiency in every moment on the trail.

App Optimised

Live Valve Neo, like the Transfer Neo dropper post, is fully supported by the FOX Bike app. It includes easy-to-follow setup guides for all your Neo components, as well as some other useful functions.

Garage

Store profiles for multiple Neoequipped mountain bikes and get a dashboard view of component connection status and battery levels. Customise your bikes by adding a photo, nickname, make and model for quick selection and personalisation.

Components

Add or monitor Neo components, double-check connections, and ensure batteries are topped up before you hit the trails. Review installation or battery replacement guides with easy-to-follow images. Activate Bump LED Indication, Shake to Wake functionality and make sure your Live Valve Neo system is up to date with the latest firmware.

Service

Track your Neo component Ride Hours (based on accelerometer data input) against recommended service intervals, look up service pricing and details, create a service request or find a nearby service location.

The ultra-fast switch between Open and Firm Mode lets you experience the efficiency of riding a hardtail, but only when you want it. This allows riders to maintain momentum and speed easier than ever before, in all sorts of riding scenarios. Some examples:

Pumping out of corners. The shock may open briefly in the middle of a corner to maintain traction, but by the time you're ready to exit the corner, the rear of the bike will be firmer, more supportive, and conducive to pumping for speed.
Getting airborne. If your shock is firm during take-off from a jump or drop, the Controller will detect that you are airborne after take-off, and open your shock so it's ready to absorb when you touch down on the landing.
Riding through a short technical section on an otherwise smooth climb. When climbing, Live Valve Neo defaults to Firm, but after your front wheel encounters its first obstacle, your rear shock can open to absorb the impact, then quickly firm up for power out of the technical section.
On an eMTB, riders climb faster and spend more time seated, experiencing higher impacts on climbs. Opening the shock when needed absorbs more of that impact. OEMs can also tune shim stacks inside the Live Valve Neo shock to forego an e-bike's stiff pedalling platform in favour of unrestrained descent performance. Live Valve Neo's Firm mode creates its own pedalling platform.

Specifications DHX Live Valve NEO

701g system weight (185x55mm shock, sensors and controller battery - does not include spring).
Based on dhx architecture, sharing many of the same parts.
Transparent and trackable 125-hour service interval.
Separate valved reservoir circuits for compression and firm mode.
Available in factory series only (both oem and aftermarket).
Bearing mount and fox-approved strut mount compatible.
Reservoir lengths matched to shock travel for improved clearance on smaller sizes and proportional appearance.
Numbered, tool-free low speed compression adjuster - 11 positions, easily adjusted trailside.
Numbered, tool-free rebound adjuster shared with DHX.
Standard and trunnion mount offerings.
Shocks can have travel reduced in 2.5mm increments up to 7.5mm.

Occasionally, without notice, manufacturers change product design and/or specifications.

Rear Shocks Sizing

It is not as simple as just bolting on any rear shock, there are some very important measurements to take into consideration.

Once the spring type (air or coil) has been decided, there two fundamental measurements needed.

Eye to eye: The total shock length. Measurement is made between the centres of each mounting hole/bolt in a straight line. This must match the new shock and is listed by the frame manufacturer in either mm or inches, often along with the stroke length. eye to eye is listed first and stroke length second. For example, 190mm x 50mm or 7.5” x 2.0“

Stroke length: The amount of travel the shock has (not the bike) can be seen by how much the telescopic part of the shock moves under full compression. Either the shaft itself can be measured or it can be worked out from the difference between the eye-to-eye length when fully extended, and fully compressed. Shown as the second number in the shock size by the manufacturer (eg 190mm x 50mm or 7.5” x 2.0”), this again should be the same as the original shock and as intended by the frame manufacturer to work with that particular linkage design.

Mounting hardware

Hardware includes the bushings and bolts that fit into the eyelets at either end of the shock, allowing it to be fitted to the frame. Although standards are starting to settle, the hardware will vary with each frame and shock combination. If replacements are needed there are dedicated suspension tuning specialists who can supply these parts.

Coil Shocks

Coil shocks can be tuned to your riding style by using a spring with the correct spring rate for your weight. The best spring for you will most likely be purchased separately, some riders will find they experiment with different springs to find their best set up.

Springs are rated by pounds (lbs) and this should be printed on the spring along with the travel length of the spring in inches. For example 400 lbs x 2.25”.

Coil springs are available in either steel or titanium, there is no noticeable performance difference between the two apart from the weight advantage of titanium.

Most people will experiment with spring rates to find the right spring for them, although a few turns of preload can be added when setting sag it is always best to find the correct spring rate for your weight, riding style, and frame.

Jargon Buster

Attack position – body position of the rider when riding into a technical section of trail, braced for any trail feature with weight balanced in the centre of the bike.

Compression – Controlling how the suspension moves through the available travel.

High-speed compression – How the suspension moves through the travel from High-speed hits not high-speed riding, for example rocks, roots, braking bumps, landing from jumps/drops etc.

Low-speed compression - How the suspension moves through the travel from low speed movement not low-speed riding, for example when under compression through a berm, going up a transition of a jump etc.

Linear – The strength required to compress the spring remains the same through the full movement.

Progressive – The strength required to compress the spring increases progressively through the full movement.

Metric – Referring to the eye-to-eye measurement of a shock in mm rather than inches.

Piggy-back – An extra part of the shock that comes out from the main body. This gives a larger oil volume for internal damping, offering better damping control and more consistent performance on extreme terrain. The frame design must have the space for this larger type of shock and will not fit all bikes.

Preload – How much the coil spring is compressed in its static state.

Rebound – how fast a shock returns to full extension.

Sag – how much travel is used under rider weight.

Shock pump – A high pressure air pump used to adjust air shocks, running at a much higher pressure than a normal inner tube/tyre pump.

Spring rate – The force needed to compress the shock.

Stroke length – the amount of travel the shock has, not the same as the amount of travel the bike has.

Trunnion – A trunnion mount shock has a larger body where one eyelet is housed in the body. This allows a longer stroke length in a shorter eye-to-eye.

Volume spacers – Internal plastic spacer that can be added inside an air shock to reduce internal air volume and so increasing the progression of the shock through its travel.

See full Rear Shocks Guide

2025 Gravel Bikes

Fox Racing Shox DHX Live Valve Neo F-S Rear Shock and Sensors

Rear Shocks Sizing

Mounting hardware

Coil Shocks

Jargon Buster

Fox Racing Shox DHX Live Valve Neo F-S Rear Shock and Sensors

Out of Stock