Bridgestone M59 80/100/21 Front Tire Purple Gear Offset is the term used

Offset is the term used to describe how far the front axle is ‘offset’ from the steering axis

(21-25) KX250X

KX triple clamps

& M6x20 and are great for mounting radiator shrouds and bodywork plastics

For example

Bridgestone M59 80/100/21 Front Tire Purple Gear Offset is the term usedThe Living Legend! Off Road Front Tire for varied intermediate terrain Excellent for cross country competition, the Bridgestone M59 offers extra wide tread blocks and rounded profile offers the self cleaning bite you need in soft conditions. For soft to intermediate terrain Tube type. Tire Size Load Rating Index Speed Rating Index Tube Type Tubeless Article # OE or Replacement Sidewall Extended Description 80 100 21 51 M TUBETYPE 65846 REPLACEMENT