Bottom Line
The FOX High Pressure Digital Shock Pump is a pretty nifty unit, and the pressure gauge’s LCD display has large easy to read numbers that give instant reinforcement of its output. This design is much handier and user friendly to read then a traditional analog gauge, and the small .5 psi increments allow for minor alterations in pressure. The pump has some great features, including an extra long Schrader connector, which makes it easier to thread onto the valve and connect it into deep recesses. The highlight of the pump is the bleed button that allows very minute amounts of air to be dropped for precise pressure adjustments.
The pumps chamber is narrow and the lever has a short stroke, so it can some time to get a shock to higher pressures, but that also makes it easier to add small amounts. The pump is a bit more expensive than the competition, but it offers a lot of great creature comforts, including the bleed button and digital output. I do wish the battery was serviceable, but FOX claims it will outlast the pump?
This is a great functional pump, with an excellent Schrader connector and superb bleed button, and the user friendly digital readout with large numbers is pretty sweet for dialing in your suspension precisely.
Pros
- Easy to read digital LCD gauge
- Long Schrader connector
- Durable
- Superb bleed button
Cons
- Not the cheapest on the market
- Battery not serviceable or rechargeable
- Short and low volume stroke – slow to fill shock/fork
Overall Rating: 4.5 Flamin’ Chili Peppers 
FOX HP Digital Shock Pump Spec:
- MSRP: $69.99
- Accurately check and set suspension pressures
- Connects to Schrader valve suspension products
- Auto shut-off after 1 minute
- Pressure release button to allow air to be removed while getting to the right psi
- 270 degree rotating hose with an extended Schrader valve tip
- Four Pressure Scales/Displays – PSI | BAR | kPa | KG/CM²
- <= Operating Ranges =>
- 0-300 PSI (Increments of 0.5 for 0-199.5 psi, Increments of 1 for 200 to 300 psi)
- 0-20.70 BAR (Increments of 0.05 Bar)
- 0-21.10 kg/cm2 (Increments of 0.05 kg/cm2)
- 0-2065 kPa (increments of 5 kPa)
This is the same pump as Rock Shox is using. I find it tough to use as the pressure (and pumping force) go above 200 psi in a read shock because there is really nothing to hold onto besides that small thumb indentation. If you hold higher up on the handle you risk damaging the gauge or hitting the bleed button.
The biggest issue I have is realizing exactly how much pressure is lost when disconnecting the unit. How does this pump differ?
Rich – I updated the article on the subject: “Like most any pump, there is always a small of amount of air that lingers in the hose, so that when you disconnect the pump, that air is lost in the total relationship to the shocks pressure and the gauges last reading. The gauge measures a total pressure value of x, which is a combination of the shocks value of y along with the hose value of z. I found the value of the lingering air in the hose to be between 2-4psi (or more) on this pump, which depends greatly on how you disconnect the Schrader connector. Again, the lost psi during disconnect is meaningless if you are always using the same method for checking the pressure: connect, pump or bleed to your designated psi, disconnect, check sag if needed, repeat. Once you have defined that 95psi is the sweet spot for your pump, your done.”
Bog – At high pressures you need to resort to grasping the pump with your hand, and the use your index finger on the end. It was easy not to touch the bleed button or gauge. I tested pumping four different pumps the other night, and they all required the same technique.
Little trick to prevent excess pressure loss when removing a Fox pump. When disconnecting the pump push the handle down at the same time so the air pressure is pushing out air, thus preventing as much leakage. Seems to work for me.
But I agree the pumps should have a seal near the head so you don’t have to fill the hose with your tire during disconnect.