SOLD
Rings were custom machined by Rotor in CO Springs to clear the PM sensor. I used in the #3 OCP position but I believe they machined enough that you can move to the #2 or #4 position as well. The small chainring was given 2 small drill holes to accept the small bolts that secure the Pioneer sensor to the crank. Less than 1K miles, as these were on my backup road bike for 1.5 years.
Amateur recreational hobbyist cyclist
https://www.strava.com/athletes/337152
https://vimeo.com/user11846099
Rings were custom machined by Rotor in CO Springs to clear the PM sensor. I used in the #3 OCP position but I believe they machined enough that you can move to the #2 or #4 position as well. The small chainring was given 2 small drill holes to accept the small bolts that secure the Pioneer sensor to the crank. Less than 1K miles, as these were on my backup road bike for 1.5 years.
Amateur recreational hobbyist cyclist
https://www.strava.com/athletes/337152
https://vimeo.com/user11846099