Could not resist the 1000w Bafang Ultra Motor mid-drive (160Nm) with a 52v/17Ah internal battery and the 52v/13 Ah extender battery they throw in FREE (for a limited time), plus the 11-speed SRAM NX drive train. Got the optional Tektro 4-piston brakes, and the A-bars. Chose the 'Electric Blue' color with the 27.5x3 wheels and the medium frame. UPDATE: I ordered it 5/19/23 and with shipping to Hawaii arrived on 6/13/23. Color as delivered is an issue. The 'Electric Blue' depicted on their website is not a match to the more purple bike delivered (check the overlay photo). I followed-up with Biktrix customer service and in the end, they issued a partial refund to cover the cost to repaint the bike. The other option would have been to incur $1300 shipping cost to/from Hawaii to return the bike.