After crashing, forks and triple clamps can become warped or twisted and steering stops can be broken off. Steering bearing sets should always be replaced where new triple clamps are installed. Triple tree / yoke steering stem assembly suitable for Yamaha Aerox and MBK Nitro scooter models from year 2002 with 30mm steering column shaftdiameter. Please check the fork diameter. Older models and pre- 2002 use 27mm forks, and newer models use 30mm.