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Going from a heavy steel rear sprocket to this lightweight aluminum you will feel the difference immediately - unsprung rotational mass is VERY important to the bikes acceleration
SpeedBox is activated
The maximum assistance speed can also be switched by briefly activating WALK assist or by turning the rear wheel 360°
Electric bikes equipped with SpeedBox products can be used exclusively on private property and entirely at one’s own risk
Activate/deactivate the tuning before the ride (when the e-bike is standing still)
SPEEDi for Giant Reign E+ 3 (2022-2024) speedbox Going from a heavy steelThe 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