RadlBock

What is RadlBock?

RadlBock is a handcrafted rocker plate that sits between your bike and indoor trainer, designed to make indoor riding feel more natural.

Unlike basic rocker plates, RadlBock includes several unique design features:

• Rear axis with rubber buffers: Provides smooth damping, reducing pressure on your sit bones, back, and wrists.
• Adjustable gymnastics balls: Replace standard tennis balls and allow you to fine-tune the pressure for a more realistic riding feel.
• Front piece with lift and rotation: Raises the front wheel to the correct height and allows gentle rotation, simulating steering and cornering for a more lifelike experience.

RadlBock works with both road bikes and mountain bikes and is currently built for the Wahoo Kickr Core, with adaptations for other popular trainers planned.

Concept designs

To better explain the idea behind RadlBock, here are two early concept drawings. They illustrate the basic movement principles and construction approach. The final design may differ in details.

Full version Rear axis with rubber buffers, adjustable gymnastics balls, and rotating front section.

Budget version Simplified concept using tennis balls for vertical and lateral movement.

These drawings are meant as a visual explanation of the idea — not as final product visuals. Feedback on what matters most to you is very welcome.

Why RadlBock?

With conventional indoor training, the bike is rigidly connected to the trainer and the floor. Every movement and power peak is transferred directly to the rider and the bike.

RadlBock changes exactly that:

• More comfort: Elastic damping reduces pressure on sit bones, back and wrists – making longer sessions noticeably more comfortable.
• Natural movement: Side-to-side motion enables standing efforts and sprints – much closer to the outdoor riding experience.
• Active core: The freedom of movement engages your core muscles, similar to riding outside.
• Reduced stress on equipment: Power peaks are absorbed, reducing strain on frames and components.

Shape RadlBock & stay informed

RadlBock is currently in the development phase. Sign up to help shape the final version in a practical way — for road and mountain bikers who want a more realistic and comfortable indoor training experience.

Benefits for you:

• Early access to the first limited series
• Opportunity to provide feedback directly into the design
• Small reward for early supporters