Type: Race / Competition only

About this tire

Bridgestone's short-course minibike racing tire — “born to win minibike races.” Compounds: YCX (soft) and YCY (medium); the rear YCZ (hard) has been discontinued. The official page says nothing about street legality, so it is listed as unconfirmed here.

Across the six axes, Dry・Sport sits at 5 and Comfort at 1. A tire set up to be good at some things and to give up others. Of the 14 tires in the Race group, 11 carry 5 for Dry. 1 front sizes and 1 rear, mostly 12-inch.

Our rating (1–5)

Dry5 / 5
Wet2 / 5
Life2 / 5
Warm-up4 / 5
Comfort1 / 5
Sport5 / 5

OE sizes can differ by model year and market — the sidewall of your own bike is the sure reference. This is a Japanese-market lineup; the sizes themselves are international.

Size lineup

Front

Rear

Bikes whose OE sizes it fits

Of the 260 bikes on file, this tire’s size lineup fits the OE sizes of 7. Each link opens the tires you can pick for that bike.

ModelYearsFrontRear
Kawasaki Z125 PRO2021 model100/90-12120/70-12
Honda CUV e:2025–present100/90-12110/90-12
Honda NSF100current as of Nov 2026100/90-12120/80-12
Honda Grom2026 model120/70-12130/70-12
Honda Dax 1252026 model120/70-12130/70-12
Yamaha CYGNUS X2026–present110/70-12130/70-12
Yamaha Cygnus Gryphuscurrent as of Aug 2026120/70-12130/70-12

See also

Other Race tires (13)

Tires in the same group, to compare ratings and size lineups.

Where to buy

Sources

How to read this

Follow on X for updates @2strokegoat ― posts when new tires and bikes are added