For your inspiration, here is some examples of trials-focused brands:
24UK, Adamant, Aorta, Ashton, Atomz, B1k3, BT, Base, Base Bikes, Because, Bionic, Bonz, Born, Briza, Caelifera, Chorrillas, Clean, Crewkerz, Crossbow, Czar, Echo, DaBomb, Fans, Hashta.gg, Heatsink, Hoffmann, Inpulse, Inspired, Jitsie, Kabra, Ko, Kot, Koxx, Leeson, MBK, Magellan, Marino, Megamo, Meta, Milkyway, Mist, Monty, Neon, Omen, Onza, Ozonys, Play Bike, Raceline, RBDesign, Ribo, Rockman, Slic, Speedrace, TMS, TNN, Tensile, Toxsin, Trialtech, Triton, Try-All, UN, Vario, Viz, WAW, Yaabaa, Zhi, Zona, Zoo.
(with the help of craigjames and dezmtber)
I knowww, but it is ...
Personally, my all-time favorite in trials-related names is a model name of Univega:
The T-Rammler.
A rammler is german for male bunny, with heavy sexual connotation.