Trek Bicycle to E-Bike Conversion Guide For Toseven DM01/DM02 Mid Drive Motor

[to7motor]

Hi everyone,

Trek bikes (especially the Marlin, FX, and Dual Sport series) are some of the most popular platforms for DIY e-bike conversions. However, navigating Trek’s bottom bracket standards and traditional BSA shells can cause major headaches when trying to line up a mid-drive motor.

We have put together a complete conversion guide specifically for Trek owners looking to install a DM01 or DM02 mid-drive.

The guide covers:

• Frame Compatibility: Breakdown by popular models (Marlin, FX, Dual Sport, Roscoe, etc.).
• Bottom Bracket Identification: Exact adapter and spacer requirements for Trek’s BSA, PF92, and BB90 shells.
• Motor Clearance & Chainline: How to handle curved downtubes and achieve the perfect chainline (especially on Trek mountain bikes with Boost spacing).
• Installation: Sensor alignment, wiring routing, and critical torque specs.

You can check out the full breakdown here: Full Trek Bicycle E-Bike Conversion Guide with ToSeven

We want this to be a living document for the DIY community. If you’ve recently converted a Trek model that isn't listed, or found a specific spacer combination that worked perfectly for your build, drop a comment below so we can add it to the database.

 

[PedalUma]

ToSeven motors are the best! I am working on three 2-7 conversions today. About 150 variables are end user programmable right through the display. And they work on almost any standard bike. I have done about 100 and love them. No customer complaints and 147 five-star reviews. I am making one bike that has all the geo and group-sets including brakes of a Specialized Creo that costs as a starter bike $899. It will out run and out last the $5,000 Creo and is not dealer dependent! It is a new Marin Kentfield 3 starter bike for conversion. I am going through frame with the wire to the display. No ugly wires or connectors or zip ties. Clean, lithe and lovely with an external battery that looks a lot like a water bottle, so in the future it can be upgraded as tech advances, for a fraction of the cost of Specialized proprietary. See Google Maps, PedalUma eBikes for local reviews and photos. Contact me for tips. I can even send you a motor with pro support in English.