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 up to 2002 with 27mm fork diameter. Please check the fork diameter. Older models and pre- 2002 use 27mm forks, and newer models use 30mm.