These were bought (July 2024) to refurbish a 2017 Cannondale 27.5” mountain bike (quick release, non-boost, 135mm O.L.D (rear), 146mm axle (rear), 8 speed, HG cassette, previous wheels- Etrto: 584x17).
The quality of the new wheels are excellent - strong, balanced, and roll forever once secured in the bikes’s dropouts. Cornering is much improved with the wider rims (25 upgraded from 17). The freehub sounds very healthy, although the part number is not clear beyond the Koozer Xm490 hub shell reference, or is the appropriate method for extracting the freehub - should a replacement be necessary
There was an initial compatibility issue at the installation because it appeared the rear wheels’ axle was only equal to the O.L.D. of the bike’s frame, but this was because I had not realised the necessary extension attachments were still connected to the protective transportation axle covers.
Seating my tires (2.3” and 2.25”) was a nightmare, but this was an issue with my technique.
Apart from minor setup complications (relating to my knowledge) I am very satisfied with the purchase, and build quality, and appreciate Madspeed’s detailed information on the website, and - more importantly- their provision of an option to upgrade an older bike.