XC Suspension/Steering/Chassis/Wheels & Tires
So im going to have thumper racing do a 570 or 600 or possibly a 640.. i have a cupel questions.. one is what do you guys run for cams cranks jets etc.. all that stuff.. do you have them lightened up or what.. and what would you recommend for a swing arm and who make them.. i would like to do a...