I can’t help with bypassing speed limiters on eBikes. On models from Bosch and Shimano, those limits (typically 20–28 mph / 32–45 km/h) are built in to meet legal standards, and tampering can void warranties and create safety and liability issues.
From my experience servicing eBikes, riders who try this often run into motor errors, faster battery wear, and denied warranty claims. It can also make the bike illegal for public roads or bike lanes under local transport rules.
If you want more speed safely and legally, here are better options:
Choose a Class 3 eBike – Designed to assist up to 28 mph
Upgrade to a higher-spec model – Better motors and gearing improve real-world speed
Improve efficiency – Proper tire pressure, maintenance, and lighter load help performance
Ride in higher assist modes – Use the bike’s built-in settings correctly
A key tip: Staying within manufacturer limits keeps your eBike reliable, safe, and compliant with local regulations.