SpeedFun EVO for ROCKY MOUNTAIN Dyname 4


4.92/5.0 based on 13 reviews


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Unlock the speed limitation of your electric bike with a Rocky Mountain tuning speed unlock kit. Unleash the full speed of your ebike engine and ride it like a derestricted e-bike should be!

The SpeedFun Rocky Mountain speed unlock tuning is an intelligent speed derestriction device that requires no external power supply. It is designed to remove the speed limitation and allows to exploit the full potential of these excellent Rocky Mountain engines allowing for speeds up to 50 km/h. Original connectors which do not alter the characteristics of electrical resistance and water tightness. Once activated the bicycle will show the speed and relative data halved. From the moment of installation the device is working, always active, not deactivable. Can be installed without restrictions in all Rocky Mountain engines.

This speed unlocker is ONLY compatible with Rocky Mountain Dyname 4.0 engines from 2022 equipped with a 720Wh Powerplay battery and Jumbotron display.

NOT COMPATIBLE with previous Dyname engines models 1.0, 2.0, and 3.0


Can be assembled/disassembled at any time
It does not need any destructive modification to the original parts of the bicycle
Allows you to adjust speed with assistance activated up to 50 km/h
Installation takes few minutes, ready to use, plug and go
Suitable for Rocky Mountain engines
It does not need batteries or external power supply

Ebike with Rocky Mountain Dyname 4.0 motor where the Furious Evo device has been successfully installed
(this list is illustrative and not exhaustive)

– Altitude Powerplay Carbon 90 Rally Edition
– Altitude Powerplay Carbon 70
– Altitude Powerplay Alloy 70
– Altitude Powerplay Alloy 50
– Altitude Powerplay Alloy 30 Coil

– Instinct Powerplay Carbon 90
– Instinct Powerplay Carbon 70
– Instinct Powerplay Alloy 70
– Instinct Powerplay Alloy 50
– Instinct Powerplay Alloy 30