Introducing the third-generation HiFlex chassis conversion!Originally designed for the Reve D RDX, the HiFlex is a lightweight, tuneable-flex chassis conversion that offers high parts compatibility with YD-2 and aftermarket YD-2-based gearboxes and steering systems.
Features:

Tuneable chassis flex (high flex to highly rigid)

Traditional RDX lower deck + upper/side rail configuration

Adjustable battery position

Lightweight (36 gram lower deck – Stock 84g)

4x center-servo positions (rear/rear-mid/front/front-mid)

YD-2 front bumper compatible
Flex tuning:

High flex: Lower deck without side braces

Medium flex: Install side braces rails without standoffs

Mild flex: Install 2x standoffs (1 per side)

Fully rigid: Install 4x standoffs between lower deck & side braces
Included:

Lower deck + 2x side braces

Hardware: 6x 20mm standoffs + screws
Compatibility:

Stock Reve D RDX

Shark gearbox & DDSS

AD-XR & AD-XF

YD-2Z & YD-2R gearboxes

Topline gearbox

Yokomo RD1.0 & SD1.0/2.0

Yokomo bell-crank and slide-rack