Enviolo Extreme rear hub

Some Triobike Taxis have the Enviolo HD rear hub and some have the Enviolo Extreme. Roughly speaking, bikes that arrived after 2025 had the Extreme. 

If you want to upgrade your Triobike Taxi from Enviolo HD to Extreme, you'll also need alternative drop-outs to fit to your bike's frame before you can fit the new wheel

CVP, ENVIOLO, EXTREME MY23, SOLID AXLE,
36 SPOKE, DISC BRAKE - 40T SPLINE