R4 incorporates the latest in racing technology and rubber tires as standard! High-tech racing weapon supports your quest for world domination!

Competitive racing demands the never-ending pursuit of higher power and speed. Refinement of each key section drives home the advantages of core features!

The R4s II is pure poetry in motion
combining exquisite body styling with advanced on-road performance.

Evolution of each key component sharpens the blade of this advanced machine for racing battle.

GP touring car optimized for rubber tire performance
KYOSHO CUP compatible specifications

Compatible with both sponge & rubber tires
The latest evolution in GP touring car racing