A trainer-specific motion system for Wahoo KICKR CORE 2. Controlled lateral movement, a compact footprint and a ride feel you can tune in seconds.
Motion Ball Set
Choose how much tuning you want
Both use the same ROCKERON ULTRA hardware. Only the included Motion Ball library changes.
Your setup€229,99 EUR
Dispatch
Ships within a few days.
30-day return policyTest the complete setup at home.
Designed in GermanyTrainer-specific, compact and serviceable.
Installs in minutesNo permanent modification to your trainer.
Motion Ball inventory.
Both choices include the same trainer-specific ULTRA system and front support. The difference is the Motion Ball library supplied with it.
Balanced€229,99 EUR
The focused everyday set
A deliberately edited mix for riders who want a natural, controlled ride without configuring every possible character on day one.
10 ×YellowFirm
8 ×GreenMedium
8 ×OrangeSoft
8 ×WhiteExtra-hard
Ready-to-ride starting configuration
Covers core FLOW, CLIMB and POWER use
Can be expanded later with additional Motion Balls
Performance€289,99 EUR
The complete tuning library
More balls across all four stiffness levels unlock the full range of Ride Feels and more freedom to tune symmetry, support and progression.
18 ×YellowFirm
14 ×GreenMedium
14 ×OrangeSoft
18 ×WhiteExtra-hard
Full four-stiffness Motion Ball library
Unlocks every published Ride Feel
Best for frequent tuning and experimentation
FLOATPerformance onlyDIRECTPerformance only
Performance only
A setup carrying this label needs the additional Motion Ball quantities included with Performance. FLOAT and DIRECT are the current examples.
The ride
Movement that responds to the effort.
ROCKERON ULTRA adds controlled side-to-side motion below the trainer and matching front support. It reduces the locked-in feel without turning your Pain Cave into a full-size rocker-plate workshop.
Less static
The bike can follow your body instead of holding every pedal stroke rigidly in place.
Tuned in seconds
Swap Motion Balls to move from calm and damped to direct and highly supported.
Built around your trainer
The system follows the trainer footprint and remains easy to store, move and service.
Trainer-specific ULTRA modulesBike front support
Balanced Motion Ball Set
Pain Cave Access
Pain Cave access
What is included
Everything matched to this exact setup.
Trainer-specific ULTRA modules
Rear modules shaped for Wahoo KICKR CORE 2 with secure support at the intended contact points.
Bike front support
The matching front element keeps bike height and movement geometry aligned.
Balanced Motion Ball Set
The selected ball library plus a tested starting configuration for this product.
Pain Cave access
Route search and tested Motion Ball starting setups help you prepare the next ride.
Smart trainer and bicycle are shown for context and are not included.
Technical confidence
Check the fit before you ride.
The Setup Finder has already separated trainer and bicycle compatibility. These details make the result transparent before purchase.
Use this arrangement for the first ride. Ride briefly, then change only what you want to feel softer, firmer or freer.
Rear ULTRA setup
Front support
Bike · 4 medium green Motion Balls
Place the ULTRA modules at the specified trainer contact points, fit the matching front support, insert the recommended starting balls and check stability before riding.
Keep contact surfaces clean and dry. Inspect printed parts and Motion Balls regularly, and replace components showing damage or unusual deformation.
Shipping, returns and support
Shipping is calculated at checkout. The complete setup is covered by the stated 30-day return policy. For fit questions, send a clear side and rear photo of your trainer before use.
Material & safety
Built to be ridden. Checked before every ride.
Clear material information and a short pre-ride routine protect the system and the rider.
PLA
Material and finish
3D-printed PLA · black. Minor visual variations may occur as a natural result of additive manufacturing.
14+
Use and safety
ROCKERON is not a toy and is not suitable for children under 14. Always use the system on a flat, stable surface and check every component before every ride. Follow the installation guide before first use.
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