This was one of those tools I wanted for a long time but just never seemed to be able justify the cost verse reward. After all how bad could my floor pump be anyway?
My final reason to buy one was switching to tubeless. The form and function of the D2 are very simple. The slide on the end switches between Presta and Schader valves. On the display section of the gauge you will find the universally known power button. Another to change between PSI and BAR. The final digital button is a adjustment mode, “Tune”. After turning the device on and pressing the adjustment button the read out will blink. When mounted to the air valve it will read the current pressure in your wheel. The big yellow button on the front of the gauge when pressed will let air out so you can fine tune the air in your wheels. The rotating head makes for easy access and comfortable use on different bikes and wheel sizes.
It has quickly turned into one of the most used tools I have and find it valuable to even take on rides. I am still learning the pressure game with my wheels and find it interesting after riding a section of trail and it either felt great or not to check my tires for clues. I don’t always make changes but have found pressure surprises more then once.
I have had the Topeak D2 for just over a year. What ever the original battery is its still in it and working great. The tool nerd in me would love to have access to some testing equipment to verify its accuracy. After an original glance at the directions when I opened the packed, this device is super easy to use and I’m very confident in it’s results.
I bought this on Amazon for $27.96 and it is now listed for $33.56. For me this is a great tool and investment and has helped me with setting up tubeless with confidence. The only thing I wish this device had was a backlit digital display. For a small tool to inspire me and my bike setup I would rate this tool with a thumbs up.
Here is the specification from Topeak.
Topeak D2 Smart Head Digital Pressure Gauge
The second-generation digital gauge features a rotating SmartHead™ and works seamlessly with Presta and Schrader valves without changing parts. Precision digital gauge reads up to 250 psi/17 bar and is designed for use with tires, suspension forks and rear shock units.
LCD display can be programmed to show pressure in psi, Bar, or kg/cm2.
- Head SmartHead™
- Gauge Digital – PSI, Bar, kg/cm2
- Battery CR2032 x 1 (included)
- Body Engineering Grade Plastic
- Capacity Reads 250 psi/17 bar
- Rotating Head
- Air Release Button
- SmartHead™ rotates 180 degrees
- Large display reads in PSI, Bar and Kg/cm2
- SmartHead™ auto-adjusts to fit Presta and Schrader valves
- Air tune button to fine tune pressure
- Uses 1 CR2032 battery
- Size (L x W x H): 10.2 x 4.5 x 3.5cm 4” x 1.8” x 1.4”
- Weight: 65g/2.29oz