When considering the best tall e-bike for someone who is 6'8", especially with a preference for a specialized bike, there are several factors and recommendations to keep in mind. Based on discussions among tall riders, here are some insights and suggestions:

Fit Considerations

For exceptionally tall riders, such as those around 6'8", finding a well-fitting e-bike can be challenging. Many standard bike shops do not stock frames larger than 61 cm, which may not suffice for someone of your height [2:1], [2:3]. It's crucial to ensure that the bike frame size is suitable for you, so consider asking bike shops if they can order in specific sizes for you to try out [2:2].

Specific Models and Brands

Several users have recommended specific bikes and brands that cater to taller riders. The Trek Domane AL 3 disc was mentioned, but some users expressed skepticism about its fit for someone 6'10" [2:10]. Canyon bikes, particularly their XL and XXL models, were suggested as being more accommodating for taller individuals [2:5], [2:11]. Additionally, DirtySixer is a brand known for making bikes specifically designed for very tall people, although they can be expensive and sometimes out of stock [2:7].

Customization Options

If off-the-shelf options don't fit perfectly, customization might be necessary. Some tall riders have found success by purchasing an XL frame and then swapping parts like longer seat posts or stems to better accommodate their height [1:5], [2:9]. However, it's important to note that while modifications can help, a bike that is purpose-built for taller individuals will likely provide a more comfortable ride [3:4].

Professional Advice and Fitting

Consulting with professionals at bike shops can be invaluable. They may not always have the right size in stock, especially for very tall riders, but they can often order frames for you to try [2:2], [2:10]. A proper bike fitting can also make a significant difference in comfort and performance, ensuring the seat post height and saddle position are appropriately adjusted [2:9].

Recommendations Beyond Discussions

While the discussions provide useful insights, it might also be worth exploring custom bike builders who specialize in creating bikes for tall individuals. Although this can be a more costly option, it ensures a perfect fit tailored to your specific measurements and riding style. Additionally, keeping an eye on new releases from brands known for catering to taller riders, such as Canyon and Trek, could provide more options.