SPEEDi for Trek Powerfly FS 9 Equiped (2021 - 2023)

SPEEDi for Trek Powerfly FS 9 Equiped (2021 - 2023)The 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

stock SurRon display

Wilier and Haibike Lyke

Purion 200 or the system controller

2 mph) and assistance will be unlocked up to 35 km/h

please ask for this)

Built-in launch & lift assist hardware ensures advanced stability control for perfect wheelies and enhanced riding dynamics (Available via App update in Spring 2026*)

BTWIN City Speed 900E

Tuning for Bafang M200 M410 M500 M510 How does SpeedBox 3

A lightweight CNC machined aluminum suspension triangle that's a direct fit in place of the original part

use the set of numbers after the first and second dash and the M-Value at the end eg:  26D/57T-M3

And this is the best way to shed some unnecessary weight from your rear wheel

However we recommend not to exceed 35 km/h