Direct axle-mounted attachment for 1:1 sag measurement—ensures precise sag readings across entire suspension travel
Wireless remote or app connectivity—instantly view sag measurements on handlebars or smartphone
No external tools required—eliminates need for O-rings or rulers, simplifying setup and measurement
Compatible with Slacker digital sag scale—ensures accurate, real-time data
Easy installation with included axle insert and magnetic clamp—minimal setup time
Summarized by Shop
The Slacker Virtual Fender Mount provides the perfect attachment point directly above the rear axle to hook Slacker's retractable cable on. This lets MTB riders take 1:1 sag measurements across the entire suspension travel using a Slacker Digital Suspension Tuner. Ditch the cheap o-ring or ruler and see precise, real-time percentages righ
Color
Black, Gray
Compatible Bike Type
Mountain
Pattern
Solid
Vehicle Placement
Rear
Summarized by Shop
4.5
6 ratings
5
4
3
2
1
Nice addition to my toolbox.
Bluetooth connectivity is great. App has lots of versatility. Just remember that you're measuring wheel travel and not shock travel so that you get correct data.
K
Kevin · August 24, 2026
Fantastic product
It’s a brilliant idea to measure the vertical movement of the wheel rather than the seat. The three-piece design makes it perfect for transport and storage. The ‘Remove Before Flight’ strips are really cool! Slacker’s products are some of the best I’ve ever seen. 10 stars🌟
G
Gustavo · August 12, 2026
Bicycle
I love this for my bicycle too. So easy I check my sag, front and rear by myself. So easy to use