Just look at the diffrence from these pics. Weight with a trials bike typically ranges from 15-30 lbs. Give or take. You need a light but super strong bike. Rims are drilled (usally- See
www.echobike.com) for weight, rear hyrolic rim brakes, front disk, single speed, geared very very low I run a 22/18 ratio.
Look at the diffrences in gear set up, frame design, and stems. You can prolly figgure it out.
Trials Bike Stock (No seat)
Trials Bike Stock (With Seat)
Trial Bike Mod (20" Rims)
XC Race Bikes