Hi.
I have both CYC x1pro Gen2 and CYC X1 Stealth in similar frames (Stockli 9.7 Race - mine and Stockli 9.6 Edition my wife's bike). Stealth is somewhat quieter but has lower power settings (same steel gears on both bikes). I have 11/63t Chainring and Sprocket Set in CYC x1pro and 11/53t in...