Amazon.com: Customer reviews: SPEEDBOX for Shimano Steps E8000, E7000, E6100 & E5000 | Electric Bike Tuning Chip | Remove Speed Limit for Mid Drive eBike Motor
Shimano ebike tuning chip
Shimano PearTune Tuning Chip to Derestrict SH1 Steps for Di2 E8000 E7000 | eBay
RedPed L für EP8 Einbau - Shimano EP8 Tuning - YouTube
Shimano PearTune Tuning Chip to Derestrict SH1 Steps for Di2 E8000 E7000 | eBay