It's rare that I write reviews as I find it painful. But I'm compelled to express my gratitude to TFL for this amazing product (not to mention the foot pads, tires etc).
I put this purchase off for 2 years, thinking it was a "nice to have". I was wrong! these rails are a major upgrade and I underestimated how much better they'd make the ride. Much more sure-footed, stable and carvy. The lateral foot instability/tipiness that I would feel on deep inside turns or uneven terrain is gone. Thank you!