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The function of the Furious Evo tuning device for Yamaha PW-X3 and PW-S2 is to electronically manipulate the rotation speed of the rear wheel and to communicate to the motor a speed that is always lower than 25 KmH in order to obtain a very high real speed with the motor active
This means that the mirror can also be installed without restriction on e-bikes up to 45 km/h
Easy version Install PDF
Syncros / Formula CL-148S
Protect harness
SPEEDi for Specialized Levo Base Model (2022 -2023) Hub Spacer Type::Specialized Concave The function of the FuriousThe SPEEDi is an e bike speed limit increaser. Designed, tested and manufactered in New Zealand, our SPEEDi uses a mechanical planetary gear system to increase your standard e bike speed limit by 1. 5. Please note that the SPEEDi is very specific to the chosen Bike, Hub and Disc setup. Please don't assume that because your bike is similar it will fit, as it likely won't. If you're not 100% sure, please contact us. Please refer to the Hub picture