Alpha Viper MXT Review Alpha Viper MXT Review Reprinted with permission of the United States Racquet Stringer's Association Viper MXT is Alpha's newest premium solid core string. Diameter ranged from 1.29 mm to 1.31 mm. It doesn't recoil like some strings and has minimal silicone coating, making handling and clamping easier. Even without a slick coating, cross strings weave smoothly without any burning or notching.
Knots tie easily and cinch up nicely.
No problems here. It provided sufficient power and very good control. Below average control. A comfortable string to install and play with. I would recommend this to players who like soft string and people with arm problems.